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@@ -1346,3 +1346,5 @@ minigpt2/lib/python3.10/site-packages/ray/data/__pycache__/dataset.cpython-310.p
 minigpt2/lib/python3.10/site-packages/ray/data/__pycache__/read_api.cpython-310.pyc filter=lfs diff=lfs merge=lfs -text
 llava/lib/python3.10/site-packages/pip/_vendor/idna/__pycache__/uts46data.cpython-310.pyc filter=lfs diff=lfs merge=lfs -text
 llava/lib/python3.10/site-packages/pip/_vendor/idna/__pycache__/idnadata.cpython-310.pyc filter=lfs diff=lfs merge=lfs -text
+minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_raw_aesni.abi3.so filter=lfs diff=lfs merge=lfs -text
+minigpt2/lib/python3.10/site-packages/imageio/plugins/__pycache__/_tifffile.cpython-310.pyc filter=lfs diff=lfs merge=lfs -text

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/AES.pyi

@@ -0,0 +1,156 @@
+from typing import Dict, Optional, Tuple, Union, overload
+from typing_extensions import Literal
+
+Buffer=bytes|bytearray|memoryview
+
+from Crypto.Cipher._mode_ecb import EcbMode
+from Crypto.Cipher._mode_cbc import CbcMode
+from Crypto.Cipher._mode_cfb import CfbMode
+from Crypto.Cipher._mode_ofb import OfbMode
+from Crypto.Cipher._mode_ctr import CtrMode
+from Crypto.Cipher._mode_openpgp import OpenPgpMode
+from Crypto.Cipher._mode_ccm import CcmMode
+from Crypto.Cipher._mode_eax import EaxMode
+from Crypto.Cipher._mode_gcm import GcmMode
+from Crypto.Cipher._mode_siv import SivMode
+from Crypto.Cipher._mode_ocb import OcbMode
+
+MODE_ECB: Literal[1]
+MODE_CBC: Literal[2]
+MODE_CFB: Literal[3]
+MODE_OFB: Literal[5]
+MODE_CTR: Literal[6]
+MODE_OPENPGP: Literal[7]
+MODE_CCM: Literal[8]
+MODE_EAX: Literal[9]
+MODE_SIV: Literal[10]
+MODE_GCM: Literal[11]
+MODE_OCB: Literal[12]
+
+# MODE_ECB
+@overload
+def new(key: Buffer,
+        mode: Literal[1],
+        use_aesni : bool = ...) -> \
+        EcbMode: ...
+
+# MODE_CBC
+@overload
+def new(key: Buffer,
+        mode: Literal[2],
+        iv : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        CbcMode: ...
+
+@overload
+def new(key: Buffer,
+        mode: Literal[2],
+        IV : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        CbcMode: ...
+
+# MODE_CFB
+@overload
+def new(key: Buffer,
+        mode: Literal[3],
+        iv : Optional[Buffer] = ...,
+        segment_size : int = ...,
+        use_aesni : bool = ...) -> \
+        CfbMode: ...
+
+@overload
+def new(key: Buffer,
+        mode: Literal[3],
+        IV : Optional[Buffer] = ...,
+        segment_size : int = ...,
+        use_aesni : bool = ...) -> \
+        CfbMode: ...
+
+# MODE_OFB
+@overload
+def new(key: Buffer,
+        mode: Literal[5],
+        iv : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        OfbMode: ...
+
+@overload
+def new(key: Buffer,
+        mode: Literal[5],
+        IV : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        OfbMode: ...
+
+# MODE_CTR
+@overload
+def new(key: Buffer,
+        mode: Literal[6],
+        nonce : Optional[Buffer] = ...,
+        initial_value : Union[int, Buffer] = ...,
+        counter : Dict = ...,
+        use_aesni : bool = ...) -> \
+        CtrMode: ...
+
+# MODE_OPENPGP
+@overload
+def new(key: Buffer,
+        mode: Literal[7],
+        iv : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        OpenPgpMode: ...
+
+@overload
+def new(key: Buffer,
+        mode: Literal[7],
+        IV : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        OpenPgpMode: ...
+
+# MODE_CCM
+@overload
+def new(key: Buffer,
+        mode: Literal[8],
+        nonce : Optional[Buffer] = ...,
+        mac_len : int = ...,
+        assoc_len : int = ...,
+        use_aesni : bool = ...) -> \
+        CcmMode: ...
+
+# MODE_EAX
+@overload
+def new(key: Buffer,
+        mode: Literal[9],
+        nonce : Optional[Buffer] = ...,
+        mac_len : int = ...,
+        use_aesni : bool = ...) -> \
+        EaxMode: ...
+
+# MODE_GCM
+@overload
+def new(key: Buffer,
+        mode: Literal[10],
+        nonce : Optional[Buffer] = ...,
+        use_aesni : bool = ...) -> \
+        SivMode: ...
+
+# MODE_SIV
+@overload
+def new(key: Buffer,
+        mode: Literal[11],
+        nonce : Optional[Buffer] = ...,
+        mac_len : int = ...,
+        use_aesni : bool = ...) -> \
+        GcmMode: ...
+
+# MODE_OCB
+@overload
+def new(key: Buffer,
+        mode: Literal[12],
+        nonce : Optional[Buffer] = ...,
+        mac_len : int = ...,
+        use_aesni : bool = ...) -> \
+        OcbMode: ...
+
+
+block_size: int
+key_size: Tuple[int, int, int]

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/ARC2.py

@@ -0,0 +1,175 @@
+# -*- coding: utf-8 -*-
+#
+#  Cipher/ARC2.py : ARC2.py
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+"""
+Module's constants for the modes of operation supported with ARC2:
+
+:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
+:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
+:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
+:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
+:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
+:var MODE_OPENPGP:  :ref:`OpenPGP Mode <openpgp_mode>`
+:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
+"""
+
+import sys
+
+from Crypto.Cipher import _create_cipher
+from Crypto.Util.py3compat import byte_string
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
+                                  VoidPointer, SmartPointer,
+                                  c_size_t, c_uint8_ptr)
+
+_raw_arc2_lib = load_pycryptodome_raw_lib(
+                        "Crypto.Cipher._raw_arc2",
+                        """
+                        int ARC2_start_operation(const uint8_t key[],
+                                                 size_t key_len,
+                                                 size_t effective_key_len,
+                                                 void **pResult);
+                        int ARC2_encrypt(const void *state,
+                                         const uint8_t *in,
+                                         uint8_t *out,
+                                         size_t data_len);
+                        int ARC2_decrypt(const void *state,
+                                         const uint8_t *in,
+                                         uint8_t *out,
+                                         size_t data_len);
+                        int ARC2_stop_operation(void *state);
+                        """
+                        )
+
+
+def _create_base_cipher(dict_parameters):
+    """This method instantiates and returns a handle to a low-level
+    base cipher. It will absorb named parameters in the process."""
+
+    try:
+        key = dict_parameters.pop("key")
+    except KeyError:
+        raise TypeError("Missing 'key' parameter")
+
+    effective_keylen = dict_parameters.pop("effective_keylen", 1024)
+
+    if len(key) not in key_size:
+        raise ValueError("Incorrect ARC2 key length (%d bytes)" % len(key))
+
+    if not (40 <= effective_keylen <= 1024):
+        raise ValueError("'effective_key_len' must be at least 40 and no larger than 1024 "
+                         "(not %d)" % effective_keylen)
+
+    start_operation = _raw_arc2_lib.ARC2_start_operation
+    stop_operation = _raw_arc2_lib.ARC2_stop_operation
+
+    cipher = VoidPointer()
+    result = start_operation(c_uint8_ptr(key),
+                             c_size_t(len(key)),
+                             c_size_t(effective_keylen),
+                             cipher.address_of())
+    if result:
+        raise ValueError("Error %X while instantiating the ARC2 cipher"
+                         % result)
+
+    return SmartPointer(cipher.get(), stop_operation)
+
+
+def new(key, mode, *args, **kwargs):
+    """Create a new RC2 cipher.
+
+    :param key:
+        The secret key to use in the symmetric cipher.
+        Its length can vary from 5 to 128 bytes; the actual search space
+        (and the cipher strength) can be reduced with the ``effective_keylen`` parameter.
+    :type key: bytes, bytearray, memoryview
+
+    :param mode:
+        The chaining mode to use for encryption or decryption.
+    :type mode: One of the supported ``MODE_*`` constants
+
+    :Keyword Arguments:
+        *   **iv** (*bytes*, *bytearray*, *memoryview*) --
+            (Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
+            and ``MODE_OPENPGP`` modes).
+
+            The initialization vector to use for encryption or decryption.
+
+            For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
+
+            For ``MODE_OPENPGP`` mode only,
+            it must be 8 bytes long for encryption
+            and 10 bytes for decryption (in the latter case, it is
+            actually the *encrypted* IV which was prefixed to the ciphertext).
+
+            If not provided, a random byte string is generated (you must then
+            read its value with the :attr:`iv` attribute).
+
+        *   **nonce** (*bytes*, *bytearray*, *memoryview*) --
+            (Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
+
+            A value that must never be reused for any other encryption done
+            with this key.
+
+            For ``MODE_EAX`` there are no
+            restrictions on its length (recommended: **16** bytes).
+
+            For ``MODE_CTR``, its length must be in the range **[0..7]**.
+
+            If not provided for ``MODE_EAX``, a random byte string is generated (you
+            can read it back via the ``nonce`` attribute).
+
+        *   **effective_keylen** (*integer*) --
+            Optional. Maximum strength in bits of the actual key used by the ARC2 algorithm.
+            If the supplied ``key`` parameter is longer (in bits) of the value specified
+            here, it will be weakened to match it.
+            If not specified, no limitation is applied.
+
+        *   **segment_size** (*integer*) --
+            (Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
+            are segmented in. It must be a multiple of 8.
+            If not specified, it will be assumed to be 8.
+
+        *   **mac_len** : (*integer*) --
+            (Only ``MODE_EAX``)
+            Length of the authentication tag, in bytes.
+            It must be no longer than 8 (default).
+
+        *   **initial_value** : (*integer*) --
+            (Only ``MODE_CTR``). The initial value for the counter within
+            the counter block. By default it is **0**.
+
+    :Return: an ARC2 object, of the applicable mode.
+    """
+
+    return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
+
+MODE_ECB = 1
+MODE_CBC = 2
+MODE_CFB = 3
+MODE_OFB = 5
+MODE_CTR = 6
+MODE_OPENPGP = 7
+MODE_EAX = 9
+
+# Size of a data block (in bytes)
+block_size = 8
+# Size of a key (in bytes)
+key_size = range(5, 128 + 1)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/ARC2.pyi

@@ -0,0 +1,35 @@
+from typing import Union, Dict, Iterable, Optional
+
+Buffer = bytes|bytearray|memoryview
+
+from Crypto.Cipher._mode_ecb import EcbMode
+from Crypto.Cipher._mode_cbc import CbcMode
+from Crypto.Cipher._mode_cfb import CfbMode
+from Crypto.Cipher._mode_ofb import OfbMode
+from Crypto.Cipher._mode_ctr import CtrMode
+from Crypto.Cipher._mode_openpgp import OpenPgpMode
+from Crypto.Cipher._mode_eax import EaxMode
+
+ARC2Mode = int
+
+MODE_ECB: ARC2Mode
+MODE_CBC: ARC2Mode
+MODE_CFB: ARC2Mode
+MODE_OFB: ARC2Mode
+MODE_CTR: ARC2Mode
+MODE_OPENPGP: ARC2Mode
+MODE_EAX: ARC2Mode
+
+def new(key: Buffer,
+        mode: ARC2Mode,
+        iv : Optional[Buffer] = ...,
+        IV : Optional[Buffer] = ...,
+        nonce : Optional[Buffer] = ...,
+        segment_size : int = ...,
+        mac_len : int = ...,
+        initial_value : Union[int, Buffer] = ...,
+        counter : Dict = ...) -> \
+        Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
+
+block_size: int
+key_size: Iterable[int]

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/ARC4.pyi

@@ -0,0 +1,16 @@
+from typing import Any, Union, Iterable
+
+Buffer = bytes|bytearray|memoryview
+
+class ARC4Cipher:
+    block_size: int
+    key_size: int
+
+    def __init__(self, key: Buffer, *args: Any, **kwargs: Any) -> None: ...
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    def decrypt(self, ciphertext: Buffer) -> bytes: ...
+
+def new(key: Buffer, drop : int = ...) -> ARC4Cipher: ...
+
+block_size: int
+key_size: Iterable[int]

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/CAST.py

@@ -0,0 +1,159 @@
+# -*- coding: utf-8 -*-
+#
+#  Cipher/CAST.py : CAST
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+"""
+Module's constants for the modes of operation supported with CAST:
+
+:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
+:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
+:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
+:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
+:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
+:var MODE_OPENPGP:  :ref:`OpenPGP Mode <openpgp_mode>`
+:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
+"""
+
+import sys
+
+from Crypto.Cipher import _create_cipher
+from Crypto.Util.py3compat import byte_string
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
+                                  VoidPointer, SmartPointer,
+                                  c_size_t, c_uint8_ptr)
+
+_raw_cast_lib = load_pycryptodome_raw_lib(
+                    "Crypto.Cipher._raw_cast",
+                    """
+                    int CAST_start_operation(const uint8_t key[],
+                                             size_t key_len,
+                                             void **pResult);
+                    int CAST_encrypt(const void *state,
+                                     const uint8_t *in,
+                                     uint8_t *out,
+                                     size_t data_len);
+                    int CAST_decrypt(const void *state,
+                                     const uint8_t *in,
+                                     uint8_t *out,
+                                     size_t data_len);
+                    int CAST_stop_operation(void *state);
+                    """)
+
+
+def _create_base_cipher(dict_parameters):
+    """This method instantiates and returns a handle to a low-level
+    base cipher. It will absorb named parameters in the process."""
+
+    try:
+        key = dict_parameters.pop("key")
+    except KeyError:
+        raise TypeError("Missing 'key' parameter")
+
+    if len(key) not in key_size:
+        raise ValueError("Incorrect CAST key length (%d bytes)" % len(key))
+
+    start_operation = _raw_cast_lib.CAST_start_operation
+    stop_operation = _raw_cast_lib.CAST_stop_operation
+
+    cipher = VoidPointer()
+    result = start_operation(c_uint8_ptr(key),
+                             c_size_t(len(key)),
+                             cipher.address_of())
+    if result:
+        raise ValueError("Error %X while instantiating the CAST cipher"
+                         % result)
+
+    return SmartPointer(cipher.get(), stop_operation)
+
+
+def new(key, mode, *args, **kwargs):
+    """Create a new CAST cipher
+
+    :param key:
+        The secret key to use in the symmetric cipher.
+        Its length can vary from 5 to 16 bytes.
+    :type key: bytes, bytearray, memoryview
+
+    :param mode:
+        The chaining mode to use for encryption or decryption.
+    :type mode: One of the supported ``MODE_*`` constants
+
+    :Keyword Arguments:
+        *   **iv** (*bytes*, *bytearray*, *memoryview*) --
+            (Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
+            and ``MODE_OPENPGP`` modes).
+
+            The initialization vector to use for encryption or decryption.
+
+            For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
+
+            For ``MODE_OPENPGP`` mode only,
+            it must be 8 bytes long for encryption
+            and 10 bytes for decryption (in the latter case, it is
+            actually the *encrypted* IV which was prefixed to the ciphertext).
+
+            If not provided, a random byte string is generated (you must then
+            read its value with the :attr:`iv` attribute).
+
+        *   **nonce** (*bytes*, *bytearray*, *memoryview*) --
+            (Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
+
+            A value that must never be reused for any other encryption done
+            with this key.
+
+            For ``MODE_EAX`` there are no
+            restrictions on its length (recommended: **16** bytes).
+
+            For ``MODE_CTR``, its length must be in the range **[0..7]**.
+
+            If not provided for ``MODE_EAX``, a random byte string is generated (you
+            can read it back via the ``nonce`` attribute).
+
+        *   **segment_size** (*integer*) --
+            (Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
+            are segmented in. It must be a multiple of 8.
+            If not specified, it will be assumed to be 8.
+
+        *   **mac_len** : (*integer*) --
+            (Only ``MODE_EAX``)
+            Length of the authentication tag, in bytes.
+            It must be no longer than 8 (default).
+
+        *   **initial_value** : (*integer*) --
+            (Only ``MODE_CTR``). The initial value for the counter within
+            the counter block. By default it is **0**.
+
+    :Return: a CAST object, of the applicable mode.
+    """
+
+    return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
+
+MODE_ECB = 1
+MODE_CBC = 2
+MODE_CFB = 3
+MODE_OFB = 5
+MODE_CTR = 6
+MODE_OPENPGP = 7
+MODE_EAX = 9
+
+# Size of a data block (in bytes)
+block_size = 8
+# Size of a key (in bytes)
+key_size = range(5, 16 + 1)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/ChaCha20.py

@@ -0,0 +1,287 @@
+# ===================================================================
+#
+# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+from Crypto.Random import get_random_bytes
+
+from Crypto.Util.py3compat import _copy_bytes
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
+                                  create_string_buffer,
+                                  get_raw_buffer, VoidPointer,
+                                  SmartPointer, c_size_t,
+                                  c_uint8_ptr, c_ulong,
+                                  is_writeable_buffer)
+
+_raw_chacha20_lib = load_pycryptodome_raw_lib("Crypto.Cipher._chacha20",
+                    """
+                    int chacha20_init(void **pState,
+                                      const uint8_t *key,
+                                      size_t keySize,
+                                      const uint8_t *nonce,
+                                      size_t nonceSize);
+
+                    int chacha20_destroy(void *state);
+
+                    int chacha20_encrypt(void *state,
+                                         const uint8_t in[],
+                                         uint8_t out[],
+                                         size_t len);
+
+                    int chacha20_seek(void *state,
+                                      unsigned long block_high,
+                                      unsigned long block_low,
+                                      unsigned offset);
+                    int hchacha20(  const uint8_t key[32],
+                                    const uint8_t nonce16[16],
+                                    uint8_t subkey[32]);
+                    """)
+
+
+def _HChaCha20(key, nonce):
+
+    assert(len(key) == 32)
+    assert(len(nonce) == 16)
+
+    subkey = bytearray(32)
+    result = _raw_chacha20_lib.hchacha20(
+                c_uint8_ptr(key),
+                c_uint8_ptr(nonce),
+                c_uint8_ptr(subkey))
+    if result:
+        raise ValueError("Error %d when deriving subkey with HChaCha20" % result)
+
+    return subkey
+
+
+class ChaCha20Cipher(object):
+    """ChaCha20 (or XChaCha20) cipher object.
+    Do not create it directly. Use :py:func:`new` instead.
+
+    :var nonce: The nonce with length 8, 12 or 24 bytes
+    :vartype nonce: bytes
+    """
+
+    block_size = 1
+
+    def __init__(self, key, nonce):
+        """Initialize a ChaCha20/XChaCha20 cipher object
+
+        See also `new()` at the module level."""
+
+        self.nonce = _copy_bytes(None, None, nonce)
+
+        # XChaCha20 requires a key derivation with HChaCha20
+        # See 2.3 in https://tools.ietf.org/html/draft-arciszewski-xchacha-03
+        if len(nonce) == 24:
+            key = _HChaCha20(key, nonce[:16])
+            nonce = b'\x00' * 4 + nonce[16:]
+            self._name = "XChaCha20"
+        else:
+            self._name = "ChaCha20"
+            nonce = self.nonce
+
+        self._next = ("encrypt", "decrypt")
+
+        self._state = VoidPointer()
+        result = _raw_chacha20_lib.chacha20_init(
+                        self._state.address_of(),
+                        c_uint8_ptr(key),
+                        c_size_t(len(key)),
+                        nonce,
+                        c_size_t(len(nonce)))
+        if result:
+            raise ValueError("Error %d instantiating a %s cipher" % (result,
+                                                                     self._name))
+        self._state = SmartPointer(self._state.get(),
+                                   _raw_chacha20_lib.chacha20_destroy)
+
+    def encrypt(self, plaintext, output=None):
+        """Encrypt a piece of data.
+
+        Args:
+          plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size.
+        Keyword Args:
+          output(bytes/bytearray/memoryview): The location where the ciphertext
+            is written to. If ``None``, the ciphertext is returned.
+        Returns:
+          If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "encrypt" not in self._next:
+            raise TypeError("Cipher object can only be used for decryption")
+        self._next = ("encrypt",)
+        return self._encrypt(plaintext, output)
+
+    def _encrypt(self, plaintext, output):
+        """Encrypt without FSM checks"""
+
+        if output is None:
+            ciphertext = create_string_buffer(len(plaintext))
+        else:
+            ciphertext = output
+
+            if not is_writeable_buffer(output):
+                raise TypeError("output must be a bytearray or a writeable memoryview")
+
+            if len(plaintext) != len(output):
+                raise ValueError("output must have the same length as the input"
+                                 "  (%d bytes)" % len(plaintext))
+
+        result = _raw_chacha20_lib.chacha20_encrypt(
+                                         self._state.get(),
+                                         c_uint8_ptr(plaintext),
+                                         c_uint8_ptr(ciphertext),
+                                         c_size_t(len(plaintext)))
+        if result:
+            raise ValueError("Error %d while encrypting with %s" % (result, self._name))
+
+        if output is None:
+            return get_raw_buffer(ciphertext)
+        else:
+            return None
+
+    def decrypt(self, ciphertext, output=None):
+        """Decrypt a piece of data.
+
+        Args:
+          ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size.
+        Keyword Args:
+          output(bytes/bytearray/memoryview): The location where the plaintext
+            is written to. If ``None``, the plaintext is returned.
+        Returns:
+          If ``output`` is ``None``, the plaintext is returned as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "decrypt" not in self._next:
+            raise TypeError("Cipher object can only be used for encryption")
+        self._next = ("decrypt",)
+
+        try:
+            return self._encrypt(ciphertext, output)
+        except ValueError as e:
+            raise ValueError(str(e).replace("enc", "dec"))
+
+    def seek(self, position):
+        """Seek to a certain position in the key stream.
+
+        Args:
+          position (integer):
+            The absolute position within the key stream, in bytes.
+        """
+
+        position, offset = divmod(position, 64)
+        block_low = position & 0xFFFFFFFF
+        block_high = position >> 32
+
+        result = _raw_chacha20_lib.chacha20_seek(
+                                                 self._state.get(),
+                                                 c_ulong(block_high),
+                                                 c_ulong(block_low),
+                                                 offset
+                                                 )
+        if result:
+            raise ValueError("Error %d while seeking with %s" % (result, self._name))
+
+
+def _derive_Poly1305_key_pair(key, nonce):
+    """Derive a tuple (r, s, nonce) for a Poly1305 MAC.
+
+    If nonce is ``None``, a new 12-byte nonce is generated.
+    """
+
+    if len(key) != 32:
+        raise ValueError("Poly1305 with ChaCha20 requires a 32-byte key")
+
+    if nonce is None:
+        padded_nonce = nonce = get_random_bytes(12)
+    elif len(nonce) == 8:
+        # See RFC7538, 2.6: [...] ChaCha20 as specified here requires a 96-bit
+        # nonce.  So if the provided nonce is only 64-bit, then the first 32
+        # bits of the nonce will be set to a constant number.
+        # This will usually be zero, but for protocols with multiple senders it may be
+        # different for each sender, but should be the same for all
+        # invocations of the function with the same key by a particular
+        # sender.
+        padded_nonce = b'\x00\x00\x00\x00' + nonce
+    elif len(nonce) == 12:
+        padded_nonce = nonce
+    else:
+        raise ValueError("Poly1305 with ChaCha20 requires an 8- or 12-byte nonce")
+
+    rs = new(key=key, nonce=padded_nonce).encrypt(b'\x00' * 32)
+    return rs[:16], rs[16:], nonce
+
+
+def new(**kwargs):
+    """Create a new ChaCha20 or XChaCha20 cipher
+
+    Keyword Args:
+        key (bytes/bytearray/memoryview): The secret key to use.
+            It must be 32 bytes long.
+        nonce (bytes/bytearray/memoryview): A mandatory value that
+            must never be reused for any other encryption
+            done with this key.
+
+            For ChaCha20, it must be 8 or 12 bytes long.
+
+            For XChaCha20, it must be 24 bytes long.
+
+            If not provided, 8 bytes will be randomly generated
+            (you can find them back in the ``nonce`` attribute).
+
+    :Return: a :class:`Crypto.Cipher.ChaCha20.ChaCha20Cipher` object
+    """
+
+    try:
+        key = kwargs.pop("key")
+    except KeyError as e:
+        raise TypeError("Missing parameter %s" % e)
+
+    nonce = kwargs.pop("nonce", None)
+    if nonce is None:
+        nonce = get_random_bytes(8)
+
+    if len(key) != 32:
+        raise ValueError("ChaCha20/XChaCha20 key must be 32 bytes long")
+
+    if len(nonce) not in (8, 12, 24):
+        raise ValueError("Nonce must be 8/12 bytes(ChaCha20) or 24 bytes (XChaCha20)")
+
+    if kwargs:
+        raise TypeError("Unknown parameters: " + str(kwargs))
+
+    return ChaCha20Cipher(key, nonce)
+
+# Size of a data block (in bytes)
+block_size = 1
+
+# Size of a key (in bytes)
+key_size = 32

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/ChaCha20.pyi

@@ -0,0 +1,25 @@
+from typing import Union, overload, Optional
+
+Buffer = bytes|bytearray|memoryview
+
+def _HChaCha20(key: Buffer, nonce: Buffer) -> bytearray: ...
+
+class ChaCha20Cipher:
+    block_size: int
+    nonce: bytes
+
+    def __init__(self, key: Buffer, nonce: Buffer) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    def seek(self, position: int) -> None: ...
+
+def new(key: Buffer, nonce: Optional[Buffer] = ...) -> ChaCha20Cipher: ...
+
+block_size: int
+key_size: int

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/ChaCha20_Poly1305.pyi

@@ -0,0 +1,28 @@
+from typing import Union, Tuple, overload, Optional
+
+Buffer = bytes|bytearray|memoryview
+
+class ChaCha20Poly1305Cipher:
+    nonce: bytes
+
+    def __init__(self, key: Buffer, nonce: Buffer) -> None: ...
+    def update(self, data: Buffer) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    def digest(self) -> bytes: ...
+    def hexdigest(self) -> str: ...
+    def verify(self, received_mac_tag: Buffer) -> None: ...
+    def hexverify(self, received_mac_tag: str) -> None: ...
+    def encrypt_and_digest(self, plaintext: Buffer) -> Tuple[bytes, bytes]: ...
+    def decrypt_and_verify(self, ciphertext: Buffer, received_mac_tag: Buffer) -> bytes: ...
+
+def new(key: Buffer, nonce: Optional[Buffer] = ...) -> ChaCha20Poly1305Cipher: ...
+
+block_size: int
+key_size: int

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/DES.py

@@ -0,0 +1,158 @@
+# -*- coding: utf-8 -*-
+#
+#  Cipher/DES.py : DES
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+"""
+Module's constants for the modes of operation supported with Single DES:
+
+:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
+:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
+:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
+:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
+:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
+:var MODE_OPENPGP:  :ref:`OpenPGP Mode <openpgp_mode>`
+:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
+"""
+
+import sys
+
+from Crypto.Cipher import _create_cipher
+from Crypto.Util.py3compat import byte_string
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
+                                  VoidPointer, SmartPointer,
+                                  c_size_t, c_uint8_ptr)
+
+_raw_des_lib = load_pycryptodome_raw_lib(
+                "Crypto.Cipher._raw_des",
+                """
+                int DES_start_operation(const uint8_t key[],
+                                        size_t key_len,
+                                        void **pResult);
+                int DES_encrypt(const void *state,
+                                const uint8_t *in,
+                                uint8_t *out,
+                                size_t data_len);
+                int DES_decrypt(const void *state,
+                                const uint8_t *in,
+                                uint8_t *out,
+                                size_t data_len);
+                int DES_stop_operation(void *state);
+                """)
+
+
+def _create_base_cipher(dict_parameters):
+    """This method instantiates and returns a handle to a low-level
+    base cipher. It will absorb named parameters in the process."""
+
+    try:
+        key = dict_parameters.pop("key")
+    except KeyError:
+        raise TypeError("Missing 'key' parameter")
+
+    if len(key) != key_size:
+        raise ValueError("Incorrect DES key length (%d bytes)" % len(key))
+
+    start_operation = _raw_des_lib.DES_start_operation
+    stop_operation = _raw_des_lib.DES_stop_operation
+
+    cipher = VoidPointer()
+    result = start_operation(c_uint8_ptr(key),
+                             c_size_t(len(key)),
+                             cipher.address_of())
+    if result:
+        raise ValueError("Error %X while instantiating the DES cipher"
+                         % result)
+    return SmartPointer(cipher.get(), stop_operation)
+
+
+def new(key, mode, *args, **kwargs):
+    """Create a new DES cipher.
+
+    :param key:
+        The secret key to use in the symmetric cipher.
+        It must be 8 byte long. The parity bits will be ignored.
+    :type key: bytes/bytearray/memoryview
+
+    :param mode:
+        The chaining mode to use for encryption or decryption.
+    :type mode: One of the supported ``MODE_*`` constants
+
+    :Keyword Arguments:
+        *   **iv** (*byte string*) --
+            (Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
+            and ``MODE_OPENPGP`` modes).
+
+            The initialization vector to use for encryption or decryption.
+
+            For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
+
+            For ``MODE_OPENPGP`` mode only,
+            it must be 8 bytes long for encryption
+            and 10 bytes for decryption (in the latter case, it is
+            actually the *encrypted* IV which was prefixed to the ciphertext).
+
+            If not provided, a random byte string is generated (you must then
+            read its value with the :attr:`iv` attribute).
+
+        *   **nonce** (*byte string*) --
+            (Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
+
+            A value that must never be reused for any other encryption done
+            with this key.
+
+            For ``MODE_EAX`` there are no
+            restrictions on its length (recommended: **16** bytes).
+
+            For ``MODE_CTR``, its length must be in the range **[0..7]**.
+
+            If not provided for ``MODE_EAX``, a random byte string is generated (you
+            can read it back via the ``nonce`` attribute).
+
+        *   **segment_size** (*integer*) --
+            (Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
+            are segmented in. It must be a multiple of 8.
+            If not specified, it will be assumed to be 8.
+
+        *   **mac_len** : (*integer*) --
+            (Only ``MODE_EAX``)
+            Length of the authentication tag, in bytes.
+            It must be no longer than 8 (default).
+
+        *   **initial_value** : (*integer*) --
+            (Only ``MODE_CTR``). The initial value for the counter within
+            the counter block. By default it is **0**.
+
+    :Return: a DES object, of the applicable mode.
+    """
+
+    return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
+
+MODE_ECB = 1
+MODE_CBC = 2
+MODE_CFB = 3
+MODE_OFB = 5
+MODE_CTR = 6
+MODE_OPENPGP = 7
+MODE_EAX = 9
+
+# Size of a data block (in bytes)
+block_size = 8
+# Size of a key (in bytes)
+key_size = 8

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/DES.pyi

@@ -0,0 +1,35 @@
+from typing import Union, Dict, Iterable, Optional
+
+Buffer = bytes|bytearray|memoryview
+
+from Crypto.Cipher._mode_ecb import EcbMode
+from Crypto.Cipher._mode_cbc import CbcMode
+from Crypto.Cipher._mode_cfb import CfbMode
+from Crypto.Cipher._mode_ofb import OfbMode
+from Crypto.Cipher._mode_ctr import CtrMode
+from Crypto.Cipher._mode_openpgp import OpenPgpMode
+from Crypto.Cipher._mode_eax import EaxMode
+
+DESMode = int
+
+MODE_ECB: DESMode
+MODE_CBC: DESMode
+MODE_CFB: DESMode
+MODE_OFB: DESMode
+MODE_CTR: DESMode
+MODE_OPENPGP: DESMode
+MODE_EAX: DESMode
+
+def new(key: Buffer,
+        mode: DESMode,
+        iv : Optional[Buffer] = ...,
+        IV : Optional[Buffer] = ...,
+        nonce : Optional[Buffer] = ...,
+        segment_size : int = ...,
+        mac_len : int = ...,
+        initial_value : Union[int, Buffer] = ...,
+        counter : Dict = ...) -> \
+        Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
+
+block_size: int
+key_size: int

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/DES3.pyi

@@ -0,0 +1,37 @@
+from typing import Union, Dict, Tuple, Optional
+
+Buffer = bytes|bytearray|memoryview
+
+from Crypto.Cipher._mode_ecb import EcbMode
+from Crypto.Cipher._mode_cbc import CbcMode
+from Crypto.Cipher._mode_cfb import CfbMode
+from Crypto.Cipher._mode_ofb import OfbMode
+from Crypto.Cipher._mode_ctr import CtrMode
+from Crypto.Cipher._mode_openpgp import OpenPgpMode
+from Crypto.Cipher._mode_eax import EaxMode
+
+def adjust_key_parity(key_in: bytes) -> bytes: ...
+
+DES3Mode = int
+
+MODE_ECB: DES3Mode
+MODE_CBC: DES3Mode
+MODE_CFB: DES3Mode
+MODE_OFB: DES3Mode
+MODE_CTR: DES3Mode
+MODE_OPENPGP: DES3Mode
+MODE_EAX: DES3Mode
+
+def new(key: Buffer,
+        mode: DES3Mode,
+        iv : Optional[Buffer] = ...,
+        IV : Optional[Buffer] = ...,
+        nonce : Optional[Buffer] = ...,
+        segment_size : int = ...,
+        mac_len : int = ...,
+        initial_value : Union[int, Buffer] = ...,
+        counter : Dict = ...) -> \
+        Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
+
+block_size: int
+key_size: Tuple[int, int]

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/PKCS1_OAEP.pyi

@@ -0,0 +1,35 @@
+from typing import Optional, Union, Callable, Any, overload
+from typing_extensions import Protocol
+
+from Crypto.PublicKey.RSA import RsaKey
+
+class HashLikeClass(Protocol):
+    digest_size : int
+    def new(self, data: Optional[bytes] = ...) -> Any: ...
+
+class HashLikeModule(Protocol):
+    digest_size : int
+    @staticmethod
+    def new(data: Optional[bytes] = ...) -> Any: ...
+
+HashLike = Union[HashLikeClass, HashLikeModule]
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+class PKCS1OAEP_Cipher:
+    def __init__(self,
+                 key: RsaKey,
+                 hashAlgo: HashLike,
+                 mgfunc: Callable[[bytes, int], bytes],
+                 label: Buffer,
+                 randfunc: Callable[[int], bytes]) -> None: ...
+    def can_encrypt(self) -> bool: ...
+    def can_decrypt(self) -> bool: ...
+    def encrypt(self, message: Buffer) -> bytes: ...
+    def decrypt(self, ciphertext: Buffer) -> bytes: ...
+
+def new(key: RsaKey,
+        hashAlgo: Optional[HashLike] = ...,
+        mgfunc: Optional[Callable[[bytes, int], bytes]] = ...,
+        label: Optional[Buffer] = ...,
+        randfunc: Optional[Callable[[int], bytes]] = ...) -> PKCS1OAEP_Cipher: ...

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/PKCS1_v1_5.py

@@ -0,0 +1,189 @@
+# -*- coding: utf-8 -*-
+#
+#  Cipher/PKCS1-v1_5.py : PKCS#1 v1.5
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+__all__ = ['new', 'PKCS115_Cipher']
+
+from Crypto import Random
+from Crypto.Util.number import bytes_to_long, long_to_bytes
+from Crypto.Util.py3compat import bord, is_bytes, _copy_bytes
+from ._pkcs1_oaep_decode import pkcs1_decode
+
+
+class PKCS115_Cipher:
+    """This cipher can perform PKCS#1 v1.5 RSA encryption or decryption.
+    Do not instantiate directly. Use :func:`Crypto.Cipher.PKCS1_v1_5.new` instead."""
+
+    def __init__(self, key, randfunc):
+        """Initialize this PKCS#1 v1.5 cipher object.
+
+        :Parameters:
+         key : an RSA key object
+          If a private half is given, both encryption and decryption are possible.
+          If a public half is given, only encryption is possible.
+         randfunc : callable
+          Function that returns random bytes.
+        """
+
+        self._key = key
+        self._randfunc = randfunc
+
+    def can_encrypt(self):
+        """Return True if this cipher object can be used for encryption."""
+        return self._key.can_encrypt()
+
+    def can_decrypt(self):
+        """Return True if this cipher object can be used for decryption."""
+        return self._key.can_decrypt()
+
+    def encrypt(self, message):
+        """Produce the PKCS#1 v1.5 encryption of a message.
+
+        This function is named ``RSAES-PKCS1-V1_5-ENCRYPT``, and it is specified in
+        `section 7.2.1 of RFC8017
+        <https://tools.ietf.org/html/rfc8017#page-28>`_.
+
+        :param message:
+            The message to encrypt, also known as plaintext. It can be of
+            variable length, but not longer than the RSA modulus (in bytes) minus 11.
+        :type message: bytes/bytearray/memoryview
+
+        :Returns: A byte string, the ciphertext in which the message is encrypted.
+            It is as long as the RSA modulus (in bytes).
+
+        :Raises ValueError:
+            If the RSA key length is not sufficiently long to deal with the given
+            message.
+        """
+
+        # See 7.2.1 in RFC8017
+        k = self._key.size_in_bytes()
+        mLen = len(message)
+
+        # Step 1
+        if mLen > k - 11:
+            raise ValueError("Plaintext is too long.")
+        # Step 2a
+        ps = []
+        while len(ps) != k - mLen - 3:
+            new_byte = self._randfunc(1)
+            if bord(new_byte[0]) == 0x00:
+                continue
+            ps.append(new_byte)
+        ps = b"".join(ps)
+        # Step 2b
+        em = b'\x00\x02' + ps + b'\x00' + _copy_bytes(None, None, message)
+        # Step 3a (OS2IP)
+        em_int = bytes_to_long(em)
+        # Step 3b (RSAEP)
+        m_int = self._key._encrypt(em_int)
+        # Step 3c (I2OSP)
+        c = long_to_bytes(m_int, k)
+        return c
+
+    def decrypt(self, ciphertext, sentinel, expected_pt_len=0):
+        r"""Decrypt a PKCS#1 v1.5 ciphertext.
+
+        This is the function ``RSAES-PKCS1-V1_5-DECRYPT`` specified in
+        `section 7.2.2 of RFC8017
+        <https://tools.ietf.org/html/rfc8017#page-29>`_.
+
+        Args:
+          ciphertext (bytes/bytearray/memoryview):
+            The ciphertext that contains the message to recover.
+          sentinel (any type):
+            The object to return whenever an error is detected.
+          expected_pt_len (integer):
+            The length the plaintext is known to have, or 0 if unknown.
+
+        Returns (byte string):
+            It is either the original message or the ``sentinel`` (in case of an error).
+
+        .. warning::
+            PKCS#1 v1.5 decryption is intrinsically vulnerable to timing
+            attacks (see `Bleichenbacher's`__ attack).
+            **Use PKCS#1 OAEP instead**.
+
+            This implementation attempts to mitigate the risk
+            with some constant-time constructs.
+            However, they are not sufficient by themselves: the type of protocol you
+            implement and the way you handle errors make a big difference.
+
+            Specifically, you should make it very hard for the (malicious)
+            party that submitted the ciphertext to quickly understand if decryption
+            succeeded or not.
+
+            To this end, it is recommended that your protocol only encrypts
+            plaintexts of fixed length (``expected_pt_len``),
+            that ``sentinel`` is a random byte string of the same length,
+            and that processing continues for as long
+            as possible even if ``sentinel`` is returned (i.e. in case of
+            incorrect decryption).
+
+            .. __: https://dx.doi.org/10.1007/BFb0055716
+        """
+
+        # See 7.2.2 in RFC8017
+        k = self._key.size_in_bytes()
+
+        # Step 1
+        if len(ciphertext) != k:
+            raise ValueError("Ciphertext with incorrect length (not %d bytes)" % k)
+
+        # Step 2a (O2SIP)
+        ct_int = bytes_to_long(ciphertext)
+
+        # Step 2b (RSADP) and Step 2c (I2OSP)
+        em = self._key._decrypt_to_bytes(ct_int)
+
+        # Step 3 (not constant time when the sentinel is not a byte string)
+        output = bytes(bytearray(k))
+        if not is_bytes(sentinel) or len(sentinel) > k:
+            size = pkcs1_decode(em, b'', expected_pt_len, output)
+            if size < 0:
+                return sentinel
+            else:
+                return output[size:]
+
+        # Step 3 (somewhat constant time)
+        size = pkcs1_decode(em, sentinel, expected_pt_len, output)
+        return output[size:]
+
+
+def new(key, randfunc=None):
+    """Create a cipher for performing PKCS#1 v1.5 encryption or decryption.
+
+    :param key:
+      The key to use to encrypt or decrypt the message. This is a `Crypto.PublicKey.RSA` object.
+      Decryption is only possible if *key* is a private RSA key.
+    :type key: RSA key object
+
+    :param randfunc:
+      Function that return random bytes.
+      The default is :func:`Crypto.Random.get_random_bytes`.
+    :type randfunc: callable
+
+    :returns: A cipher object `PKCS115_Cipher`.
+    """
+
+    if randfunc is None:
+        randfunc = Random.get_random_bytes
+    return PKCS115_Cipher(key, randfunc)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_EKSBlowfish.py

@@ -0,0 +1,131 @@
+# ===================================================================
+#
+# Copyright (c) 2019, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+import sys
+
+from Crypto.Cipher import _create_cipher
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
+                                  VoidPointer, SmartPointer, c_size_t,
+                                  c_uint8_ptr, c_uint)
+
+_raw_blowfish_lib = load_pycryptodome_raw_lib(
+        "Crypto.Cipher._raw_eksblowfish",
+        """
+        int EKSBlowfish_start_operation(const uint8_t key[],
+                                        size_t key_len,
+                                        const uint8_t salt[16],
+                                        size_t salt_len,
+                                        unsigned cost,
+                                        unsigned invert,
+                                        void **pResult);
+        int EKSBlowfish_encrypt(const void *state,
+                                const uint8_t *in,
+                                uint8_t *out,
+                                size_t data_len);
+        int EKSBlowfish_decrypt(const void *state,
+                                const uint8_t *in,
+                                uint8_t *out,
+                                size_t data_len);
+        int EKSBlowfish_stop_operation(void *state);
+        """
+        )
+
+
+def _create_base_cipher(dict_parameters):
+    """This method instantiates and returns a smart pointer to
+    a low-level base cipher. It will absorb named parameters in
+    the process."""
+
+    try:
+        key = dict_parameters.pop("key")
+        salt = dict_parameters.pop("salt")
+        cost = dict_parameters.pop("cost")
+    except KeyError as e:
+        raise TypeError("Missing EKSBlowfish parameter: " + str(e))
+    invert = dict_parameters.pop("invert", True)
+
+    if len(key) not in key_size:
+        raise ValueError("Incorrect EKSBlowfish key length (%d bytes)" % len(key))
+
+    start_operation = _raw_blowfish_lib.EKSBlowfish_start_operation
+    stop_operation = _raw_blowfish_lib.EKSBlowfish_stop_operation
+
+    void_p = VoidPointer()
+    result = start_operation(c_uint8_ptr(key),
+                             c_size_t(len(key)),
+                             c_uint8_ptr(salt),
+                             c_size_t(len(salt)),
+                             c_uint(cost),
+                             c_uint(int(invert)),
+                             void_p.address_of())
+    if result:
+        raise ValueError("Error %X while instantiating the EKSBlowfish cipher"
+                         % result)
+    return SmartPointer(void_p.get(), stop_operation)
+
+
+def new(key, mode, salt, cost, invert):
+    """Create a new EKSBlowfish cipher
+    
+    Args:
+
+      key (bytes, bytearray, memoryview):
+        The secret key to use in the symmetric cipher.
+        Its length can vary from 0 to 72 bytes.
+
+      mode (one of the supported ``MODE_*`` constants):
+        The chaining mode to use for encryption or decryption.
+
+      salt (bytes, bytearray, memoryview):
+        The salt that bcrypt uses to thwart rainbow table attacks
+
+      cost (integer):
+        The complexity factor in bcrypt
+
+      invert (bool):
+        If ``False``, in the inner loop use ``ExpandKey`` first over the salt
+        and then over the key, as defined in
+        the `original bcrypt specification <https://www.usenix.org/legacy/events/usenix99/provos/provos_html/node4.html>`_.
+        If ``True``, reverse the order, as in the first implementation of
+        `bcrypt` in OpenBSD.
+
+    :Return: an EKSBlowfish object
+    """
+
+    kwargs = { 'salt':salt, 'cost':cost, 'invert':invert }
+    return _create_cipher(sys.modules[__name__], key, mode, **kwargs)
+
+
+MODE_ECB = 1
+
+# Size of a data block (in bytes)
+block_size = 8
+# Size of a key (in bytes)
+key_size = range(0, 72 + 1)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_EKSBlowfish.pyi

@@ -0,0 +1,15 @@
+from typing import Union, Iterable
+
+from Crypto.Cipher._mode_ecb import EcbMode
+
+MODE_ECB: int
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+def new(key: Buffer,
+        mode: int,
+	salt: Buffer,
+	cost: int) -> EcbMode: ...
+
+block_size: int
+key_size: Iterable[int]

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/__init__.py

@@ -0,0 +1,79 @@
+#
+# A block cipher is instantiated as a combination of:
+# 1. A base cipher (such as AES)
+# 2. A mode of operation (such as CBC)
+#
+# Both items are implemented as C modules.
+#
+# The API of #1 is (replace "AES" with the name of the actual cipher):
+# - AES_start_operaion(key) --> base_cipher_state
+# - AES_encrypt(base_cipher_state, in, out, length)
+# - AES_decrypt(base_cipher_state, in, out, length)
+# - AES_stop_operation(base_cipher_state)
+#
+# Where base_cipher_state is AES_State, a struct with BlockBase (set of
+# pointers to encrypt/decrypt/stop) followed by cipher-specific data.
+#
+# The API of #2 is (replace "CBC" with the name of the actual mode):
+# - CBC_start_operation(base_cipher_state) --> mode_state
+# - CBC_encrypt(mode_state, in, out, length)
+# - CBC_decrypt(mode_state, in, out, length)
+# - CBC_stop_operation(mode_state)
+#
+# where mode_state is a a pointer to base_cipher_state plus mode-specific data.
+
+import os
+
+from Crypto.Cipher._mode_ecb import _create_ecb_cipher
+from Crypto.Cipher._mode_cbc import _create_cbc_cipher
+from Crypto.Cipher._mode_cfb import _create_cfb_cipher
+from Crypto.Cipher._mode_ofb import _create_ofb_cipher
+from Crypto.Cipher._mode_ctr import _create_ctr_cipher
+from Crypto.Cipher._mode_openpgp import _create_openpgp_cipher
+from Crypto.Cipher._mode_ccm import _create_ccm_cipher
+from Crypto.Cipher._mode_eax import _create_eax_cipher
+from Crypto.Cipher._mode_siv import _create_siv_cipher
+from Crypto.Cipher._mode_gcm import _create_gcm_cipher
+from Crypto.Cipher._mode_ocb import _create_ocb_cipher
+
+_modes = { 1:_create_ecb_cipher,
+           2:_create_cbc_cipher,
+           3:_create_cfb_cipher,
+           5:_create_ofb_cipher,
+           6:_create_ctr_cipher,
+           7:_create_openpgp_cipher,
+           9:_create_eax_cipher
+           }
+
+_extra_modes = { 8:_create_ccm_cipher,
+                10:_create_siv_cipher,
+                11:_create_gcm_cipher,
+                12:_create_ocb_cipher
+                }
+
+def _create_cipher(factory, key, mode, *args, **kwargs):
+
+    kwargs["key"] = key
+
+    modes = dict(_modes)
+    if kwargs.pop("add_aes_modes", False):
+        modes.update(_extra_modes)
+    if not mode in modes:
+        raise ValueError("Mode not supported")
+
+    if args:
+        if mode in (8, 9, 10, 11, 12):
+            if len(args) > 1:
+                raise TypeError("Too many arguments for this mode")
+            kwargs["nonce"] = args[0]
+        elif mode in (2, 3, 5, 7):
+            if len(args) > 1:
+                raise TypeError("Too many arguments for this mode")
+            kwargs["IV"] = args[0]
+        elif mode == 6:
+            if len(args) > 0:
+                raise TypeError("Too many arguments for this mode")
+        elif mode == 1:
+            raise TypeError("IV is not meaningful for the ECB mode")
+
+    return modes[mode](factory, **kwargs)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_cbc.pyi

@@ -0,0 +1,25 @@
+from typing import Union, overload
+
+from Crypto.Util._raw_api import SmartPointer
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['CbcMode']
+
+class CbcMode(object):
+    block_size: int
+    iv: Buffer
+    IV: Buffer
+
+    def __init__(self,
+                 block_cipher: SmartPointer,
+                 iv: Buffer) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ccm.py

@@ -0,0 +1,650 @@
+# ===================================================================
+#
+# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+"""
+Counter with CBC-MAC (CCM) mode.
+"""
+
+__all__ = ['CcmMode']
+
+import struct
+from binascii import unhexlify
+
+from Crypto.Util.py3compat import (byte_string, bord,
+                                   _copy_bytes)
+from Crypto.Util._raw_api import is_writeable_buffer
+
+from Crypto.Util.strxor import strxor
+from Crypto.Util.number import long_to_bytes
+
+from Crypto.Hash import BLAKE2s
+from Crypto.Random import get_random_bytes
+
+
+def enum(**enums):
+    return type('Enum', (), enums)
+
+MacStatus = enum(NOT_STARTED=0, PROCESSING_AUTH_DATA=1, PROCESSING_PLAINTEXT=2)
+
+
+class CcmMode(object):
+    """Counter with CBC-MAC (CCM).
+
+    This is an Authenticated Encryption with Associated Data (`AEAD`_) mode.
+    It provides both confidentiality and authenticity.
+
+    The header of the message may be left in the clear, if needed, and it will
+    still be subject to authentication. The decryption step tells the receiver
+    if the message comes from a source that really knowns the secret key.
+    Additionally, decryption detects if any part of the message - including the
+    header - has been modified or corrupted.
+
+    This mode requires a nonce. The nonce shall never repeat for two
+    different messages encrypted with the same key, but it does not need
+    to be random.
+    Note that there is a trade-off between the size of the nonce and the
+    maximum size of a single message you can encrypt.
+
+    It is important to use a large nonce if the key is reused across several
+    messages and the nonce is chosen randomly.
+
+    It is acceptable to us a short nonce if the key is only used a few times or
+    if the nonce is taken from a counter.
+
+    The following table shows the trade-off when the nonce is chosen at
+    random. The column on the left shows how many messages it takes
+    for the keystream to repeat **on average**. In practice, you will want to
+    stop using the key way before that.
+
+    +--------------------+---------------+-------------------+
+    | Avg. # of messages |    nonce      |     Max. message  |
+    | before keystream   |    size       |     size          |
+    | repeats            |    (bytes)    |     (bytes)       |
+    +====================+===============+===================+
+    |       2^52         |      13       |        64K        |
+    +--------------------+---------------+-------------------+
+    |       2^48         |      12       |        16M        |
+    +--------------------+---------------+-------------------+
+    |       2^44         |      11       |         4G        |
+    +--------------------+---------------+-------------------+
+    |       2^40         |      10       |         1T        |
+    +--------------------+---------------+-------------------+
+    |       2^36         |       9       |        64P        |
+    +--------------------+---------------+-------------------+
+    |       2^32         |       8       |        16E        |
+    +--------------------+---------------+-------------------+
+
+    This mode is only available for ciphers that operate on 128 bits blocks
+    (e.g. AES but not TDES).
+
+    See `NIST SP800-38C`_ or RFC3610_.
+
+    .. _`NIST SP800-38C`: http://csrc.nist.gov/publications/nistpubs/800-38C/SP800-38C.pdf
+    .. _RFC3610: https://tools.ietf.org/html/rfc3610
+    .. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
+
+    :undocumented: __init__
+    """
+
+    def __init__(self, factory, key, nonce, mac_len, msg_len, assoc_len,
+                 cipher_params):
+
+        self.block_size = factory.block_size
+        """The block size of the underlying cipher, in bytes."""
+
+        self.nonce = _copy_bytes(None, None, nonce)
+        """The nonce used for this cipher instance"""
+
+        self._factory = factory
+        self._key = _copy_bytes(None, None, key)
+        self._mac_len = mac_len
+        self._msg_len = msg_len
+        self._assoc_len = assoc_len
+        self._cipher_params = cipher_params
+
+        self._mac_tag = None  # Cache for MAC tag
+
+        if self.block_size != 16:
+            raise ValueError("CCM mode is only available for ciphers"
+                             " that operate on 128 bits blocks")
+
+        # MAC tag length (Tlen)
+        if mac_len not in (4, 6, 8, 10, 12, 14, 16):
+            raise ValueError("Parameter 'mac_len' must be even"
+                             " and in the range 4..16 (not %d)" % mac_len)
+
+        # Nonce value
+        if not (nonce and 7 <= len(nonce) <= 13):
+            raise ValueError("Length of parameter 'nonce' must be"
+                             " in the range 7..13 bytes")
+
+        # Create MAC object (the tag will be the last block
+        # bytes worth of ciphertext)
+        self._mac = self._factory.new(key,
+                                      factory.MODE_CBC,
+                                      iv=b'\x00' * 16,
+                                      **cipher_params)
+        self._mac_status = MacStatus.NOT_STARTED
+        self._t = None
+
+        # Allowed transitions after initialization
+        self._next = ["update", "encrypt", "decrypt",
+                      "digest", "verify"]
+
+        # Cumulative lengths
+        self._cumul_assoc_len = 0
+        self._cumul_msg_len = 0
+
+        # Cache for unaligned associated data/plaintext.
+        # This is a list with byte strings, but when the MAC starts,
+        # it will become a binary string no longer than the block size.
+        self._cache = []
+
+        # Start CTR cipher, by formatting the counter (A.3)
+        q = 15 - len(nonce)  # length of Q, the encoded message length
+        self._cipher = self._factory.new(key,
+                                         self._factory.MODE_CTR,
+                                         nonce=struct.pack("B", q - 1) + self.nonce,
+                                         **cipher_params)
+
+        # S_0, step 6 in 6.1 for j=0
+        self._s_0 = self._cipher.encrypt(b'\x00' * 16)
+
+        # Try to start the MAC
+        if None not in (assoc_len, msg_len):
+            self._start_mac()
+
+    def _start_mac(self):
+
+        assert(self._mac_status == MacStatus.NOT_STARTED)
+        assert(None not in (self._assoc_len, self._msg_len))
+        assert(isinstance(self._cache, list))
+
+        # Formatting control information and nonce (A.2.1)
+        q = 15 - len(self.nonce)  # length of Q, the encoded message length
+        flags = (64 * (self._assoc_len > 0) + 8 * ((self._mac_len - 2) // 2) +
+                 (q - 1))
+        b_0 = struct.pack("B", flags) + self.nonce + long_to_bytes(self._msg_len, q)
+
+        # Formatting associated data (A.2.2)
+        # Encoded 'a' is concatenated with the associated data 'A'
+        assoc_len_encoded = b''
+        if self._assoc_len > 0:
+            if self._assoc_len < (2 ** 16 - 2 ** 8):
+                enc_size = 2
+            elif self._assoc_len < (2 ** 32):
+                assoc_len_encoded = b'\xFF\xFE'
+                enc_size = 4
+            else:
+                assoc_len_encoded = b'\xFF\xFF'
+                enc_size = 8
+            assoc_len_encoded += long_to_bytes(self._assoc_len, enc_size)
+
+        # b_0 and assoc_len_encoded must be processed first
+        self._cache.insert(0, b_0)
+        self._cache.insert(1, assoc_len_encoded)
+
+        # Process all the data cached so far
+        first_data_to_mac = b"".join(self._cache)
+        self._cache = b""
+        self._mac_status = MacStatus.PROCESSING_AUTH_DATA
+        self._update(first_data_to_mac)
+
+    def _pad_cache_and_update(self):
+
+        assert(self._mac_status != MacStatus.NOT_STARTED)
+        assert(len(self._cache) < self.block_size)
+
+        # Associated data is concatenated with the least number
+        # of zero bytes (possibly none) to reach alignment to
+        # the 16 byte boundary (A.2.3)
+        len_cache = len(self._cache)
+        if len_cache > 0:
+            self._update(b'\x00' * (self.block_size - len_cache))
+
+    def update(self, assoc_data):
+        """Protect associated data
+
+        If there is any associated data, the caller has to invoke
+        this function one or more times, before using
+        ``decrypt`` or ``encrypt``.
+
+        By *associated data* it is meant any data (e.g. packet headers) that
+        will not be encrypted and will be transmitted in the clear.
+        However, the receiver is still able to detect any modification to it.
+        In CCM, the *associated data* is also called
+        *additional authenticated data* (AAD).
+
+        If there is no associated data, this method must not be called.
+
+        The caller may split associated data in segments of any size, and
+        invoke this method multiple times, each time with the next segment.
+
+        :Parameters:
+          assoc_data : bytes/bytearray/memoryview
+            A piece of associated data. There are no restrictions on its size.
+        """
+
+        if "update" not in self._next:
+            raise TypeError("update() can only be called"
+                            " immediately after initialization")
+
+        self._next = ["update", "encrypt", "decrypt",
+                      "digest", "verify"]
+
+        self._cumul_assoc_len += len(assoc_data)
+        if self._assoc_len is not None and \
+           self._cumul_assoc_len > self._assoc_len:
+            raise ValueError("Associated data is too long")
+
+        self._update(assoc_data)
+        return self
+
+    def _update(self, assoc_data_pt=b""):
+        """Update the MAC with associated data or plaintext
+           (without FSM checks)"""
+
+        # If MAC has not started yet, we just park the data into a list.
+        # If the data is mutable, we create a copy and store that instead.
+        if self._mac_status == MacStatus.NOT_STARTED:
+            if is_writeable_buffer(assoc_data_pt):
+                assoc_data_pt = _copy_bytes(None, None, assoc_data_pt)
+            self._cache.append(assoc_data_pt)
+            return
+
+        assert(len(self._cache) < self.block_size)
+
+        if len(self._cache) > 0:
+            filler = min(self.block_size - len(self._cache),
+                         len(assoc_data_pt))
+            self._cache += _copy_bytes(None, filler, assoc_data_pt)
+            assoc_data_pt = _copy_bytes(filler, None, assoc_data_pt)
+
+            if len(self._cache) < self.block_size:
+                return
+
+            # The cache is exactly one block
+            self._t = self._mac.encrypt(self._cache)
+            self._cache = b""
+
+        update_len = len(assoc_data_pt) // self.block_size * self.block_size
+        self._cache = _copy_bytes(update_len, None, assoc_data_pt)
+        if update_len > 0:
+            self._t = self._mac.encrypt(assoc_data_pt[:update_len])[-16:]
+
+    def encrypt(self, plaintext, output=None):
+        """Encrypt data with the key set at initialization.
+
+        A cipher object is stateful: once you have encrypted a message
+        you cannot encrypt (or decrypt) another message using the same
+        object.
+
+        This method can be called only **once** if ``msg_len`` was
+        not passed at initialization.
+
+        If ``msg_len`` was given, the data to encrypt can be broken
+        up in two or more pieces and `encrypt` can be called
+        multiple times.
+
+        That is, the statement:
+
+            >>> c.encrypt(a) + c.encrypt(b)
+
+        is equivalent to:
+
+             >>> c.encrypt(a+b)
+
+        This function does not add any padding to the plaintext.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+          If ``output`` is ``None``, the ciphertext as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "encrypt" not in self._next:
+            raise TypeError("encrypt() can only be called after"
+                            " initialization or an update()")
+        self._next = ["encrypt", "digest"]
+
+        # No more associated data allowed from now
+        if self._assoc_len is None:
+            assert(isinstance(self._cache, list))
+            self._assoc_len = sum([len(x) for x in self._cache])
+            if self._msg_len is not None:
+                self._start_mac()
+        else:
+            if self._cumul_assoc_len < self._assoc_len:
+                raise ValueError("Associated data is too short")
+
+        # Only once piece of plaintext accepted if message length was
+        # not declared in advance
+        if self._msg_len is None:
+            self._msg_len = len(plaintext)
+            self._start_mac()
+            self._next = ["digest"]
+
+        self._cumul_msg_len += len(plaintext)
+        if self._cumul_msg_len > self._msg_len:
+            raise ValueError("Message is too long")
+
+        if self._mac_status == MacStatus.PROCESSING_AUTH_DATA:
+            # Associated data is concatenated with the least number
+            # of zero bytes (possibly none) to reach alignment to
+            # the 16 byte boundary (A.2.3)
+            self._pad_cache_and_update()
+            self._mac_status = MacStatus.PROCESSING_PLAINTEXT
+
+        self._update(plaintext)
+        return self._cipher.encrypt(plaintext, output=output)
+
+    def decrypt(self, ciphertext, output=None):
+        """Decrypt data with the key set at initialization.
+
+        A cipher object is stateful: once you have decrypted a message
+        you cannot decrypt (or encrypt) another message with the same
+        object.
+
+        This method can be called only **once** if ``msg_len`` was
+        not passed at initialization.
+
+        If ``msg_len`` was given, the data to decrypt can be
+        broken up in two or more pieces and `decrypt` can be
+        called multiple times.
+
+        That is, the statement:
+
+            >>> c.decrypt(a) + c.decrypt(b)
+
+        is equivalent to:
+
+             >>> c.decrypt(a+b)
+
+        This function does not remove any padding from the plaintext.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext must be written to.
+            If ``None``, the plaintext is returned.
+        :Return:
+          If ``output`` is ``None``, the plaintext as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "decrypt" not in self._next:
+            raise TypeError("decrypt() can only be called"
+                            " after initialization or an update()")
+        self._next = ["decrypt", "verify"]
+
+        # No more associated data allowed from now
+        if self._assoc_len is None:
+            assert(isinstance(self._cache, list))
+            self._assoc_len = sum([len(x) for x in self._cache])
+            if self._msg_len is not None:
+                self._start_mac()
+        else:
+            if self._cumul_assoc_len < self._assoc_len:
+                raise ValueError("Associated data is too short")
+
+        # Only once piece of ciphertext accepted if message length was
+        # not declared in advance
+        if self._msg_len is None:
+            self._msg_len = len(ciphertext)
+            self._start_mac()
+            self._next = ["verify"]
+
+        self._cumul_msg_len += len(ciphertext)
+        if self._cumul_msg_len > self._msg_len:
+            raise ValueError("Message is too long")
+
+        if self._mac_status == MacStatus.PROCESSING_AUTH_DATA:
+            # Associated data is concatenated with the least number
+            # of zero bytes (possibly none) to reach alignment to
+            # the 16 byte boundary (A.2.3)
+            self._pad_cache_and_update()
+            self._mac_status = MacStatus.PROCESSING_PLAINTEXT
+
+        # Encrypt is equivalent to decrypt with the CTR mode
+        plaintext = self._cipher.encrypt(ciphertext, output=output)
+        if output is None:
+            self._update(plaintext)
+        else:
+            self._update(output)
+        return plaintext
+
+    def digest(self):
+        """Compute the *binary* MAC tag.
+
+        The caller invokes this function at the very end.
+
+        This method returns the MAC that shall be sent to the receiver,
+        together with the ciphertext.
+
+        :Return: the MAC, as a byte string.
+        """
+
+        if "digest" not in self._next:
+            raise TypeError("digest() cannot be called when decrypting"
+                            " or validating a message")
+        self._next = ["digest"]
+        return self._digest()
+
+    def _digest(self):
+        if self._mac_tag:
+            return self._mac_tag
+
+        if self._assoc_len is None:
+            assert(isinstance(self._cache, list))
+            self._assoc_len = sum([len(x) for x in self._cache])
+            if self._msg_len is not None:
+                self._start_mac()
+        else:
+            if self._cumul_assoc_len < self._assoc_len:
+                raise ValueError("Associated data is too short")
+
+        if self._msg_len is None:
+            self._msg_len = 0
+            self._start_mac()
+
+        if self._cumul_msg_len != self._msg_len:
+            raise ValueError("Message is too short")
+
+        # Both associated data and payload are concatenated with the least
+        # number of zero bytes (possibly none) that align it to the
+        # 16 byte boundary (A.2.2 and A.2.3)
+        self._pad_cache_and_update()
+
+        # Step 8 in 6.1 (T xor MSB_Tlen(S_0))
+        self._mac_tag = strxor(self._t, self._s_0)[:self._mac_len]
+
+        return self._mac_tag
+
+    def hexdigest(self):
+        """Compute the *printable* MAC tag.
+
+        This method is like `digest`.
+
+        :Return: the MAC, as a hexadecimal string.
+        """
+        return "".join(["%02x" % bord(x) for x in self.digest()])
+
+    def verify(self, received_mac_tag):
+        """Validate the *binary* MAC tag.
+
+        The caller invokes this function at the very end.
+
+        This method checks if the decrypted message is indeed valid
+        (that is, if the key is correct) and it has not been
+        tampered with while in transit.
+
+        :Parameters:
+          received_mac_tag : bytes/bytearray/memoryview
+            This is the *binary* MAC, as received from the sender.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        if "verify" not in self._next:
+            raise TypeError("verify() cannot be called"
+                            " when encrypting a message")
+        self._next = ["verify"]
+
+        self._digest()
+        secret = get_random_bytes(16)
+
+        mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=self._mac_tag)
+        mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=received_mac_tag)
+
+        if mac1.digest() != mac2.digest():
+            raise ValueError("MAC check failed")
+
+    def hexverify(self, hex_mac_tag):
+        """Validate the *printable* MAC tag.
+
+        This method is like `verify`.
+
+        :Parameters:
+          hex_mac_tag : string
+            This is the *printable* MAC, as received from the sender.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        self.verify(unhexlify(hex_mac_tag))
+
+    def encrypt_and_digest(self, plaintext, output=None):
+        """Perform encrypt() and digest() in one step.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+            a tuple with two items:
+
+            - the ciphertext, as ``bytes``
+            - the MAC tag, as ``bytes``
+
+            The first item becomes ``None`` when the ``output`` parameter
+            specified a location for the result.
+        """
+
+        return self.encrypt(plaintext, output=output), self.digest()
+
+    def decrypt_and_verify(self, ciphertext, received_mac_tag, output=None):
+        """Perform decrypt() and verify() in one step.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+          received_mac_tag : bytes/bytearray/memoryview
+            This is the *binary* MAC, as received from the sender.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext must be written to.
+            If ``None``, the plaintext is returned.
+        :Return: the plaintext as ``bytes`` or ``None`` when the ``output``
+            parameter specified a location for the result.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        plaintext = self.decrypt(ciphertext, output=output)
+        self.verify(received_mac_tag)
+        return plaintext
+
+
+def _create_ccm_cipher(factory, **kwargs):
+    """Create a new block cipher, configured in CCM mode.
+
+    :Parameters:
+      factory : module
+        A symmetric cipher module from `Crypto.Cipher` (like
+        `Crypto.Cipher.AES`).
+
+    :Keywords:
+      key : bytes/bytearray/memoryview
+        The secret key to use in the symmetric cipher.
+
+      nonce : bytes/bytearray/memoryview
+        A value that must never be reused for any other encryption.
+
+        Its length must be in the range ``[7..13]``.
+        11 or 12 bytes are reasonable values in general. Bear in
+        mind that with CCM there is a trade-off between nonce length and
+        maximum message size.
+
+        If not specified, a 11 byte long random string is used.
+
+      mac_len : integer
+        Length of the MAC, in bytes. It must be even and in
+        the range ``[4..16]``. The default is 16.
+
+      msg_len : integer
+        Length of the message to (de)cipher.
+        If not specified, ``encrypt`` or ``decrypt`` may only be called once.
+
+      assoc_len : integer
+        Length of the associated data.
+        If not specified, all data is internally buffered.
+    """
+
+    try:
+        key = key = kwargs.pop("key")
+    except KeyError as e:
+        raise TypeError("Missing parameter: " + str(e))
+
+    nonce = kwargs.pop("nonce", None)  # N
+    if nonce is None:
+        nonce = get_random_bytes(11)
+    mac_len = kwargs.pop("mac_len", factory.block_size)
+    msg_len = kwargs.pop("msg_len", None)      # p
+    assoc_len = kwargs.pop("assoc_len", None)  # a
+    cipher_params = dict(kwargs)
+
+    return CcmMode(factory, key, nonce, mac_len, msg_len,
+                   assoc_len, cipher_params)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ccm.pyi

@@ -0,0 +1,47 @@
+from types import ModuleType
+from typing import Union, overload, Dict, Tuple, Optional
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['CcmMode']
+
+class CcmMode(object):
+    block_size: int
+    nonce: bytes
+
+    def __init__(self,
+                 factory: ModuleType,
+                 key: Buffer,
+                 nonce: Buffer,
+                 mac_len: int,
+                 msg_len: int,
+                 assoc_len: int,
+                 cipher_params: Dict) -> None: ...
+    
+    def update(self, assoc_data: Buffer) -> CcmMode: ...
+
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+
+    def digest(self) -> bytes: ...
+    def hexdigest(self) -> str: ...
+    def verify(self, received_mac_tag: Buffer) -> None: ...
+    def hexverify(self, hex_mac_tag: str) -> None: ...
+
+    @overload
+    def encrypt_and_digest(self,
+                           plaintext: Buffer) -> Tuple[bytes, bytes]: ...
+    @overload
+    def encrypt_and_digest(self,
+                           plaintext: Buffer,
+                           output: Buffer) -> Tuple[None, bytes]: ...
+    def decrypt_and_verify(self,
+                           ciphertext: Buffer,
+                           received_mac_tag: Buffer,
+                           output: Optional[Union[bytearray, memoryview]] = ...) -> bytes: ...

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_cfb.pyi

@@ -0,0 +1,26 @@
+from typing import Union, overload
+
+from Crypto.Util._raw_api import SmartPointer
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['CfbMode']
+
+
+class CfbMode(object):
+    block_size: int
+    iv: Buffer
+    IV: Buffer
+    
+    def __init__(self,
+                 block_cipher: SmartPointer,
+                 iv: Buffer,
+                 segment_size: int) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ctr.py

@@ -0,0 +1,393 @@
+# -*- coding: utf-8 -*-
+#
+#  Cipher/mode_ctr.py : CTR mode
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+"""
+Counter (CTR) mode.
+"""
+
+__all__ = ['CtrMode']
+
+import struct
+
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
+                                  create_string_buffer, get_raw_buffer,
+                                  SmartPointer, c_size_t, c_uint8_ptr,
+                                  is_writeable_buffer)
+
+from Crypto.Random import get_random_bytes
+from Crypto.Util.py3compat import _copy_bytes, is_native_int
+from Crypto.Util.number import long_to_bytes
+
+raw_ctr_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_ctr", """
+                    int CTR_start_operation(void *cipher,
+                                            uint8_t   initialCounterBlock[],
+                                            size_t    initialCounterBlock_len,
+                                            size_t    prefix_len,
+                                            unsigned  counter_len,
+                                            unsigned  littleEndian,
+                                            void **pResult);
+                    int CTR_encrypt(void *ctrState,
+                                    const uint8_t *in,
+                                    uint8_t *out,
+                                    size_t data_len);
+                    int CTR_decrypt(void *ctrState,
+                                    const uint8_t *in,
+                                    uint8_t *out,
+                                    size_t data_len);
+                    int CTR_stop_operation(void *ctrState);"""
+                                        )
+
+
+class CtrMode(object):
+    """*CounTeR (CTR)* mode.
+
+    This mode is very similar to ECB, in that
+    encryption of one block is done independently of all other blocks.
+
+    Unlike ECB, the block *position* contributes to the encryption
+    and no information leaks about symbol frequency.
+
+    Each message block is associated to a *counter* which
+    must be unique across all messages that get encrypted
+    with the same key (not just within the same message).
+    The counter is as big as the block size.
+
+    Counters can be generated in several ways. The most
+    straightword one is to choose an *initial counter block*
+    (which can be made public, similarly to the *IV* for the
+    other modes) and increment its lowest **m** bits by one
+    (modulo *2^m*) for each block. In most cases, **m** is
+    chosen to be half the block size.
+
+    See `NIST SP800-38A`_, Section 6.5 (for the mode) and
+    Appendix B (for how to manage the *initial counter block*).
+
+    .. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
+
+    :undocumented: __init__
+    """
+
+    def __init__(self, block_cipher, initial_counter_block,
+                 prefix_len, counter_len, little_endian):
+        """Create a new block cipher, configured in CTR mode.
+
+        :Parameters:
+          block_cipher : C pointer
+            A smart pointer to the low-level block cipher instance.
+
+          initial_counter_block : bytes/bytearray/memoryview
+            The initial plaintext to use to generate the key stream.
+
+            It is as large as the cipher block, and it embeds
+            the initial value of the counter.
+
+            This value must not be reused.
+            It shall contain a nonce or a random component.
+            Reusing the *initial counter block* for encryptions
+            performed with the same key compromises confidentiality.
+
+          prefix_len : integer
+            The amount of bytes at the beginning of the counter block
+            that never change.
+
+          counter_len : integer
+            The length in bytes of the counter embedded in the counter
+            block.
+
+          little_endian : boolean
+            True if the counter in the counter block is an integer encoded
+            in little endian mode. If False, it is big endian.
+        """
+
+        if len(initial_counter_block) == prefix_len + counter_len:
+            self.nonce = _copy_bytes(None, prefix_len, initial_counter_block)
+            """Nonce; not available if there is a fixed suffix"""
+
+        self._state = VoidPointer()
+        result = raw_ctr_lib.CTR_start_operation(block_cipher.get(),
+                                                 c_uint8_ptr(initial_counter_block),
+                                                 c_size_t(len(initial_counter_block)),
+                                                 c_size_t(prefix_len),
+                                                 counter_len,
+                                                 little_endian,
+                                                 self._state.address_of())
+        if result:
+            raise ValueError("Error %X while instantiating the CTR mode"
+                             % result)
+
+        # Ensure that object disposal of this Python object will (eventually)
+        # free the memory allocated by the raw library for the cipher mode
+        self._state = SmartPointer(self._state.get(),
+                                   raw_ctr_lib.CTR_stop_operation)
+
+        # Memory allocated for the underlying block cipher is now owed
+        # by the cipher mode
+        block_cipher.release()
+
+        self.block_size = len(initial_counter_block)
+        """The block size of the underlying cipher, in bytes."""
+
+        self._next = ["encrypt", "decrypt"]
+
+    def encrypt(self, plaintext, output=None):
+        """Encrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have encrypted a message
+        you cannot encrypt (or decrypt) another message using the same
+        object.
+
+        The data to encrypt can be broken up in two or
+        more pieces and `encrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.encrypt(a) + c.encrypt(b)
+
+        is equivalent to:
+
+             >>> c.encrypt(a+b)
+
+        This function does not add any padding to the plaintext.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+          If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "encrypt" not in self._next:
+            raise TypeError("encrypt() cannot be called after decrypt()")
+        self._next = ["encrypt"]
+
+        if output is None:
+            ciphertext = create_string_buffer(len(plaintext))
+        else:
+            ciphertext = output
+
+            if not is_writeable_buffer(output):
+                raise TypeError("output must be a bytearray or a writeable memoryview")
+
+            if len(plaintext) != len(output):
+                raise ValueError("output must have the same length as the input"
+                                 "  (%d bytes)" % len(plaintext))
+
+        result = raw_ctr_lib.CTR_encrypt(self._state.get(),
+                                         c_uint8_ptr(plaintext),
+                                         c_uint8_ptr(ciphertext),
+                                         c_size_t(len(plaintext)))
+        if result:
+            if result == 0x60002:
+                raise OverflowError("The counter has wrapped around in"
+                                    " CTR mode")
+            raise ValueError("Error %X while encrypting in CTR mode" % result)
+
+        if output is None:
+            return get_raw_buffer(ciphertext)
+        else:
+            return None
+
+    def decrypt(self, ciphertext, output=None):
+        """Decrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have decrypted a message
+        you cannot decrypt (or encrypt) another message with the same
+        object.
+
+        The data to decrypt can be broken up in two or
+        more pieces and `decrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.decrypt(a) + c.decrypt(b)
+
+        is equivalent to:
+
+             >>> c.decrypt(a+b)
+
+        This function does not remove any padding from the plaintext.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext must be written to.
+            If ``None``, the plaintext is returned.
+        :Return:
+          If ``output`` is ``None``, the plaintext is returned as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "decrypt" not in self._next:
+            raise TypeError("decrypt() cannot be called after encrypt()")
+        self._next = ["decrypt"]
+
+        if output is None:
+            plaintext = create_string_buffer(len(ciphertext))
+        else:
+            plaintext = output
+
+            if not is_writeable_buffer(output):
+                raise TypeError("output must be a bytearray or a writeable memoryview")
+
+            if len(ciphertext) != len(output):
+                raise ValueError("output must have the same length as the input"
+                                 "  (%d bytes)" % len(plaintext))
+
+        result = raw_ctr_lib.CTR_decrypt(self._state.get(),
+                                         c_uint8_ptr(ciphertext),
+                                         c_uint8_ptr(plaintext),
+                                         c_size_t(len(ciphertext)))
+        if result:
+            if result == 0x60002:
+                raise OverflowError("The counter has wrapped around in"
+                                    " CTR mode")
+            raise ValueError("Error %X while decrypting in CTR mode" % result)
+
+        if output is None:
+            return get_raw_buffer(plaintext)
+        else:
+            return None
+
+
+def _create_ctr_cipher(factory, **kwargs):
+    """Instantiate a cipher object that performs CTR encryption/decryption.
+
+    :Parameters:
+      factory : module
+        The underlying block cipher, a module from ``Crypto.Cipher``.
+
+    :Keywords:
+      nonce : bytes/bytearray/memoryview
+        The fixed part at the beginning of the counter block - the rest is
+        the counter number that gets increased when processing the next block.
+        The nonce must be such that no two messages are encrypted under the
+        same key and the same nonce.
+
+        The nonce must be shorter than the block size (it can have
+        zero length; the counter is then as long as the block).
+
+        If this parameter is not present, a random nonce will be created with
+        length equal to half the block size. No random nonce shorter than
+        64 bits will be created though - you must really think through all
+        security consequences of using such a short block size.
+
+      initial_value : posive integer or bytes/bytearray/memoryview
+        The initial value for the counter. If not present, the cipher will
+        start counting from 0. The value is incremented by one for each block.
+        The counter number is encoded in big endian mode.
+
+      counter : object
+        Instance of ``Crypto.Util.Counter``, which allows full customization
+        of the counter block. This parameter is incompatible to both ``nonce``
+        and ``initial_value``.
+
+    Any other keyword will be passed to the underlying block cipher.
+    See the relevant documentation for details (at least ``key`` will need
+    to be present).
+    """
+
+    cipher_state = factory._create_base_cipher(kwargs)
+
+    counter = kwargs.pop("counter", None)
+    nonce = kwargs.pop("nonce", None)
+    initial_value = kwargs.pop("initial_value", None)
+    if kwargs:
+        raise TypeError("Invalid parameters for CTR mode: %s" % str(kwargs))
+
+    if counter is not None and (nonce, initial_value) != (None, None):
+        raise TypeError("'counter' and 'nonce'/'initial_value'"
+                        " are mutually exclusive")
+
+    if counter is None:
+        # Crypto.Util.Counter is not used
+        if nonce is None:
+            if factory.block_size < 16:
+                raise TypeError("Impossible to create a safe nonce for short"
+                                " block sizes")
+            nonce = get_random_bytes(factory.block_size // 2)
+        else:
+            if len(nonce) >= factory.block_size:
+                raise ValueError("Nonce is too long")
+
+        # What is not nonce is counter
+        counter_len = factory.block_size - len(nonce)
+
+        if initial_value is None:
+            initial_value = 0
+
+        if is_native_int(initial_value):
+            if (1 << (counter_len * 8)) - 1 < initial_value:
+                raise ValueError("Initial counter value is too large")
+            initial_counter_block = nonce + long_to_bytes(initial_value, counter_len)
+        else:
+            if len(initial_value) != counter_len:
+                raise ValueError("Incorrect length for counter byte string (%d bytes, expected %d)" %
+                                 (len(initial_value), counter_len))
+            initial_counter_block = nonce + initial_value
+
+        return CtrMode(cipher_state,
+                       initial_counter_block,
+                       len(nonce),                     # prefix
+                       counter_len,
+                       False)                          # little_endian
+
+    # Crypto.Util.Counter is used
+
+    # 'counter' used to be a callable object, but now it is
+    # just a dictionary for backward compatibility.
+    _counter = dict(counter)
+    try:
+        counter_len = _counter.pop("counter_len")
+        prefix = _counter.pop("prefix")
+        suffix = _counter.pop("suffix")
+        initial_value = _counter.pop("initial_value")
+        little_endian = _counter.pop("little_endian")
+    except KeyError:
+        raise TypeError("Incorrect counter object"
+                        " (use Crypto.Util.Counter.new)")
+
+    # Compute initial counter block
+    words = []
+    while initial_value > 0:
+        words.append(struct.pack('B', initial_value & 255))
+        initial_value >>= 8
+    words += [b'\x00'] * max(0, counter_len - len(words))
+    if not little_endian:
+        words.reverse()
+    initial_counter_block = prefix + b"".join(words) + suffix
+
+    if len(initial_counter_block) != factory.block_size:
+        raise ValueError("Size of the counter block (%d bytes) must match"
+                         " block size (%d)" % (len(initial_counter_block),
+                                               factory.block_size))
+
+    return CtrMode(cipher_state, initial_counter_block,
+                   len(prefix), counter_len, little_endian)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ctr.pyi

@@ -0,0 +1,27 @@
+from typing import Union, overload
+
+from Crypto.Util._raw_api import SmartPointer
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['CtrMode']
+
+class CtrMode(object):
+    block_size: int
+    nonce: bytes
+
+    def __init__(self,
+                 block_cipher: SmartPointer,
+                 initial_counter_block: Buffer,
+                 prefix_len: int,
+                 counter_len: int,
+                 little_endian: bool) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_eax.pyi

@@ -0,0 +1,45 @@
+from types import ModuleType
+from typing import Any, Union, Tuple, Dict, overload, Optional
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['EaxMode']
+
+class EaxMode(object):
+    block_size: int
+    nonce: bytes
+    
+    def __init__(self,
+                 factory: ModuleType,
+                 key: Buffer,
+                 nonce: Buffer,
+                 mac_len: int,
+                 cipher_params: Dict) -> None: ...
+    
+    def update(self, assoc_data: Buffer) -> EaxMode: ...
+
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+
+    def digest(self) -> bytes: ...
+    def hexdigest(self) -> str: ...
+    def verify(self, received_mac_tag: Buffer) -> None: ...
+    def hexverify(self, hex_mac_tag: str) -> None: ...
+
+    @overload
+    def encrypt_and_digest(self,
+                           plaintext: Buffer) -> Tuple[bytes, bytes]: ...
+    @overload
+    def encrypt_and_digest(self,
+                           plaintext: Buffer,
+                           output: Buffer) -> Tuple[None, bytes]: ...
+    def decrypt_and_verify(self,
+                           ciphertext: Buffer,
+                           received_mac_tag: Buffer,
+                           output: Optional[Union[bytearray, memoryview]] = ...) -> bytes: ...

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ecb.pyi

@@ -0,0 +1,19 @@
+from typing import Union, overload
+
+from Crypto.Util._raw_api import SmartPointer
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = [ 'EcbMode' ]
+
+class EcbMode(object):
+    def __init__(self, block_cipher: SmartPointer) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_gcm.py

@@ -0,0 +1,620 @@
+# ===================================================================
+#
+# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+"""
+Galois/Counter Mode (GCM).
+"""
+
+__all__ = ['GcmMode']
+
+from binascii import unhexlify
+
+from Crypto.Util.py3compat import bord, _copy_bytes
+
+from Crypto.Util._raw_api import is_buffer
+
+from Crypto.Util.number import long_to_bytes, bytes_to_long
+from Crypto.Hash import BLAKE2s
+from Crypto.Random import get_random_bytes
+
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
+                                  create_string_buffer, get_raw_buffer,
+                                  SmartPointer, c_size_t, c_uint8_ptr)
+
+from Crypto.Util import _cpu_features
+
+
+# C API by module implementing GHASH
+_ghash_api_template = """
+    int ghash_%imp%(uint8_t y_out[16],
+                    const uint8_t block_data[],
+                    size_t len,
+                    const uint8_t y_in[16],
+                    const void *exp_key);
+    int ghash_expand_%imp%(const uint8_t h[16],
+                           void **ghash_tables);
+    int ghash_destroy_%imp%(void *ghash_tables);
+"""
+
+def _build_impl(lib, postfix):
+    from collections import namedtuple
+
+    funcs = ( "ghash", "ghash_expand", "ghash_destroy" )
+    GHASH_Imp = namedtuple('_GHash_Imp', funcs)
+    try:
+        imp_funcs = [ getattr(lib, x + "_" + postfix) for x in funcs ]
+    except AttributeError:      # Make sphinx stop complaining with its mocklib
+        imp_funcs = [ None ] * 3
+    params = dict(zip(funcs, imp_funcs))
+    return GHASH_Imp(**params)
+
+
+def _get_ghash_portable():
+    api = _ghash_api_template.replace("%imp%", "portable")
+    lib = load_pycryptodome_raw_lib("Crypto.Hash._ghash_portable", api)
+    result = _build_impl(lib, "portable")
+    return result
+_ghash_portable = _get_ghash_portable()
+
+
+def _get_ghash_clmul():
+    """Return None if CLMUL implementation is not available"""
+
+    if not _cpu_features.have_clmul():
+        return None
+    try:
+        api = _ghash_api_template.replace("%imp%", "clmul")
+        lib = load_pycryptodome_raw_lib("Crypto.Hash._ghash_clmul", api)
+        result = _build_impl(lib, "clmul")
+    except OSError:
+        result = None
+    return result
+_ghash_clmul = _get_ghash_clmul()
+
+
+class _GHASH(object):
+    """GHASH function defined in NIST SP 800-38D, Algorithm 2.
+
+    If X_1, X_2, .. X_m are the blocks of input data, the function
+    computes:
+
+       X_1*H^{m} + X_2*H^{m-1} + ... + X_m*H
+
+    in the Galois field GF(2^256) using the reducing polynomial
+    (x^128 + x^7 + x^2 + x + 1).
+    """
+
+    def __init__(self, subkey, ghash_c):
+        assert len(subkey) == 16
+
+        self.ghash_c = ghash_c
+
+        self._exp_key = VoidPointer()
+        result = ghash_c.ghash_expand(c_uint8_ptr(subkey),
+                                      self._exp_key.address_of())
+        if result:
+            raise ValueError("Error %d while expanding the GHASH key" % result)
+
+        self._exp_key = SmartPointer(self._exp_key.get(),
+                                     ghash_c.ghash_destroy)
+
+        # create_string_buffer always returns a string of zeroes
+        self._last_y = create_string_buffer(16)
+
+    def update(self, block_data):
+        assert len(block_data) % 16 == 0
+
+        result = self.ghash_c.ghash(self._last_y,
+                                    c_uint8_ptr(block_data),
+                                    c_size_t(len(block_data)),
+                                    self._last_y,
+                                    self._exp_key.get())
+        if result:
+            raise ValueError("Error %d while updating GHASH" % result)
+
+        return self
+
+    def digest(self):
+        return get_raw_buffer(self._last_y)
+
+
+def enum(**enums):
+    return type('Enum', (), enums)
+
+
+MacStatus = enum(PROCESSING_AUTH_DATA=1, PROCESSING_CIPHERTEXT=2)
+
+
+class GcmMode(object):
+    """Galois Counter Mode (GCM).
+
+    This is an Authenticated Encryption with Associated Data (`AEAD`_) mode.
+    It provides both confidentiality and authenticity.
+
+    The header of the message may be left in the clear, if needed, and it will
+    still be subject to authentication. The decryption step tells the receiver
+    if the message comes from a source that really knowns the secret key.
+    Additionally, decryption detects if any part of the message - including the
+    header - has been modified or corrupted.
+
+    This mode requires a *nonce*.
+
+    This mode is only available for ciphers that operate on 128 bits blocks
+    (e.g. AES but not TDES).
+
+    See `NIST SP800-38D`_.
+
+    .. _`NIST SP800-38D`: http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
+    .. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
+
+    :undocumented: __init__
+    """
+
+    def __init__(self, factory, key, nonce, mac_len, cipher_params, ghash_c):
+
+        self.block_size = factory.block_size
+        if self.block_size != 16:
+            raise ValueError("GCM mode is only available for ciphers"
+                             " that operate on 128 bits blocks")
+
+        if len(nonce) == 0:
+            raise ValueError("Nonce cannot be empty")
+
+        if not is_buffer(nonce):
+            raise TypeError("Nonce must be bytes, bytearray or memoryview")
+
+        # See NIST SP 800 38D, 5.2.1.1
+        if len(nonce) > 2**64 - 1:
+            raise ValueError("Nonce exceeds maximum length")
+
+
+        self.nonce = _copy_bytes(None, None, nonce)
+        """Nonce"""
+
+        self._factory = factory
+        self._key = _copy_bytes(None, None, key)
+        self._tag = None  # Cache for MAC tag
+
+        self._mac_len = mac_len
+        if not (4 <= mac_len <= 16):
+            raise ValueError("Parameter 'mac_len' must be in the range 4..16")
+
+        # Allowed transitions after initialization
+        self._next = ["update", "encrypt", "decrypt",
+                      "digest", "verify"]
+
+        self._no_more_assoc_data = False
+
+        # Length of associated data
+        self._auth_len = 0
+
+        # Length of the ciphertext or plaintext
+        self._msg_len = 0
+
+        # Step 1 in SP800-38D, Algorithm 4 (encryption) - Compute H
+        # See also Algorithm 5 (decryption)
+        hash_subkey = factory.new(key,
+                                  self._factory.MODE_ECB,
+                                  **cipher_params
+                                  ).encrypt(b'\x00' * 16)
+
+        # Step 2 - Compute J0
+        if len(self.nonce) == 12:
+            j0 = self.nonce + b"\x00\x00\x00\x01"
+        else:
+            fill = (16 - (len(self.nonce) % 16)) % 16 + 8
+            ghash_in = (self.nonce +
+                        b'\x00' * fill +
+                        long_to_bytes(8 * len(self.nonce), 8))
+            j0 = _GHASH(hash_subkey, ghash_c).update(ghash_in).digest()
+
+        # Step 3 - Prepare GCTR cipher for encryption/decryption
+        nonce_ctr = j0[:12]
+        iv_ctr = (bytes_to_long(j0) + 1) & 0xFFFFFFFF
+        self._cipher = factory.new(key,
+                                   self._factory.MODE_CTR,
+                                   initial_value=iv_ctr,
+                                   nonce=nonce_ctr,
+                                   **cipher_params)
+
+        # Step 5 - Bootstrat GHASH
+        self._signer = _GHASH(hash_subkey, ghash_c)
+
+        # Step 6 - Prepare GCTR cipher for GMAC
+        self._tag_cipher = factory.new(key,
+                                       self._factory.MODE_CTR,
+                                       initial_value=j0,
+                                       nonce=b"",
+                                       **cipher_params)
+
+        # Cache for data to authenticate
+        self._cache = b""
+
+        self._status = MacStatus.PROCESSING_AUTH_DATA
+
+    def update(self, assoc_data):
+        """Protect associated data
+
+        If there is any associated data, the caller has to invoke
+        this function one or more times, before using
+        ``decrypt`` or ``encrypt``.
+
+        By *associated data* it is meant any data (e.g. packet headers) that
+        will not be encrypted and will be transmitted in the clear.
+        However, the receiver is still able to detect any modification to it.
+        In GCM, the *associated data* is also called
+        *additional authenticated data* (AAD).
+
+        If there is no associated data, this method must not be called.
+
+        The caller may split associated data in segments of any size, and
+        invoke this method multiple times, each time with the next segment.
+
+        :Parameters:
+          assoc_data : bytes/bytearray/memoryview
+            A piece of associated data. There are no restrictions on its size.
+        """
+
+        if "update" not in self._next:
+            raise TypeError("update() can only be called"
+                            " immediately after initialization")
+
+        self._next = ["update", "encrypt", "decrypt",
+                      "digest", "verify"]
+
+        self._update(assoc_data)
+        self._auth_len += len(assoc_data)
+
+        # See NIST SP 800 38D, 5.2.1.1
+        if self._auth_len > 2**64 - 1:
+            raise ValueError("Additional Authenticated Data exceeds maximum length")
+
+        return self
+
+    def _update(self, data):
+        assert(len(self._cache) < 16)
+
+        if len(self._cache) > 0:
+            filler = min(16 - len(self._cache), len(data))
+            self._cache += _copy_bytes(None, filler, data)
+            data = data[filler:]
+
+            if len(self._cache) < 16:
+                return
+
+            # The cache is exactly one block
+            self._signer.update(self._cache)
+            self._cache = b""
+
+        update_len = len(data) // 16 * 16
+        self._cache = _copy_bytes(update_len, None, data)
+        if update_len > 0:
+            self._signer.update(data[:update_len])
+
+    def _pad_cache_and_update(self):
+        assert(len(self._cache) < 16)
+
+        # The authenticated data A is concatenated to the minimum
+        # number of zero bytes (possibly none) such that the
+        # - ciphertext C is aligned to the 16 byte boundary.
+        #   See step 5 in section 7.1
+        # - ciphertext C is aligned to the 16 byte boundary.
+        #   See step 6 in section 7.2
+        len_cache = len(self._cache)
+        if len_cache > 0:
+            self._update(b'\x00' * (16 - len_cache))
+
+    def encrypt(self, plaintext, output=None):
+        """Encrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have encrypted a message
+        you cannot encrypt (or decrypt) another message using the same
+        object.
+
+        The data to encrypt can be broken up in two or
+        more pieces and `encrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.encrypt(a) + c.encrypt(b)
+
+        is equivalent to:
+
+             >>> c.encrypt(a+b)
+
+        This function does not add any padding to the plaintext.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+          If ``output`` is ``None``, the ciphertext as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "encrypt" not in self._next:
+            raise TypeError("encrypt() can only be called after"
+                            " initialization or an update()")
+        self._next = ["encrypt", "digest"]
+
+        ciphertext = self._cipher.encrypt(plaintext, output=output)
+
+        if self._status == MacStatus.PROCESSING_AUTH_DATA:
+            self._pad_cache_and_update()
+            self._status = MacStatus.PROCESSING_CIPHERTEXT
+
+        self._update(ciphertext if output is None else output)
+        self._msg_len += len(plaintext)
+
+        # See NIST SP 800 38D, 5.2.1.1
+        if self._msg_len > 2**39 - 256:
+            raise ValueError("Plaintext exceeds maximum length")
+
+        return ciphertext
+
+    def decrypt(self, ciphertext, output=None):
+        """Decrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have decrypted a message
+        you cannot decrypt (or encrypt) another message with the same
+        object.
+
+        The data to decrypt can be broken up in two or
+        more pieces and `decrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.decrypt(a) + c.decrypt(b)
+
+        is equivalent to:
+
+             >>> c.decrypt(a+b)
+
+        This function does not remove any padding from the plaintext.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext must be written to.
+            If ``None``, the plaintext is returned.
+        :Return:
+          If ``output`` is ``None``, the plaintext as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "decrypt" not in self._next:
+            raise TypeError("decrypt() can only be called"
+                            " after initialization or an update()")
+        self._next = ["decrypt", "verify"]
+
+        if self._status == MacStatus.PROCESSING_AUTH_DATA:
+            self._pad_cache_and_update()
+            self._status = MacStatus.PROCESSING_CIPHERTEXT
+
+        self._update(ciphertext)
+        self._msg_len += len(ciphertext)
+
+        return self._cipher.decrypt(ciphertext, output=output)
+
+    def digest(self):
+        """Compute the *binary* MAC tag in an AEAD mode.
+
+        The caller invokes this function at the very end.
+
+        This method returns the MAC that shall be sent to the receiver,
+        together with the ciphertext.
+
+        :Return: the MAC, as a byte string.
+        """
+
+        if "digest" not in self._next:
+            raise TypeError("digest() cannot be called when decrypting"
+                            " or validating a message")
+        self._next = ["digest"]
+
+        return self._compute_mac()
+
+    def _compute_mac(self):
+        """Compute MAC without any FSM checks."""
+
+        if self._tag:
+            return self._tag
+
+        # Step 5 in NIST SP 800-38D, Algorithm 4 - Compute S
+        self._pad_cache_and_update()
+        self._update(long_to_bytes(8 * self._auth_len, 8))
+        self._update(long_to_bytes(8 * self._msg_len, 8))
+        s_tag = self._signer.digest()
+
+        # Step 6 - Compute T
+        self._tag = self._tag_cipher.encrypt(s_tag)[:self._mac_len]
+
+        return self._tag
+
+    def hexdigest(self):
+        """Compute the *printable* MAC tag.
+
+        This method is like `digest`.
+
+        :Return: the MAC, as a hexadecimal string.
+        """
+        return "".join(["%02x" % bord(x) for x in self.digest()])
+
+    def verify(self, received_mac_tag):
+        """Validate the *binary* MAC tag.
+
+        The caller invokes this function at the very end.
+
+        This method checks if the decrypted message is indeed valid
+        (that is, if the key is correct) and it has not been
+        tampered with while in transit.
+
+        :Parameters:
+          received_mac_tag : bytes/bytearray/memoryview
+            This is the *binary* MAC, as received from the sender.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        if "verify" not in self._next:
+            raise TypeError("verify() cannot be called"
+                            " when encrypting a message")
+        self._next = ["verify"]
+
+        secret = get_random_bytes(16)
+
+        mac1 = BLAKE2s.new(digest_bits=160, key=secret,
+                           data=self._compute_mac())
+        mac2 = BLAKE2s.new(digest_bits=160, key=secret,
+                           data=received_mac_tag)
+
+        if mac1.digest() != mac2.digest():
+            raise ValueError("MAC check failed")
+
+    def hexverify(self, hex_mac_tag):
+        """Validate the *printable* MAC tag.
+
+        This method is like `verify`.
+
+        :Parameters:
+          hex_mac_tag : string
+            This is the *printable* MAC, as received from the sender.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        self.verify(unhexlify(hex_mac_tag))
+
+    def encrypt_and_digest(self, plaintext, output=None):
+        """Perform encrypt() and digest() in one step.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+            a tuple with two items:
+
+            - the ciphertext, as ``bytes``
+            - the MAC tag, as ``bytes``
+
+            The first item becomes ``None`` when the ``output`` parameter
+            specified a location for the result.
+        """
+
+        return self.encrypt(plaintext, output=output), self.digest()
+
+    def decrypt_and_verify(self, ciphertext, received_mac_tag, output=None):
+        """Perform decrypt() and verify() in one step.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+          received_mac_tag : byte string
+            This is the *binary* MAC, as received from the sender.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext must be written to.
+            If ``None``, the plaintext is returned.
+        :Return: the plaintext as ``bytes`` or ``None`` when the ``output``
+            parameter specified a location for the result.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        plaintext = self.decrypt(ciphertext, output=output)
+        self.verify(received_mac_tag)
+        return plaintext
+
+
+def _create_gcm_cipher(factory, **kwargs):
+    """Create a new block cipher, configured in Galois Counter Mode (GCM).
+
+    :Parameters:
+      factory : module
+        A block cipher module, taken from `Crypto.Cipher`.
+        The cipher must have block length of 16 bytes.
+        GCM has been only defined for `Crypto.Cipher.AES`.
+
+    :Keywords:
+      key : bytes/bytearray/memoryview
+        The secret key to use in the symmetric cipher.
+        It must be 16 (e.g. *AES-128*), 24 (e.g. *AES-192*)
+        or 32 (e.g. *AES-256*) bytes long.
+
+      nonce : bytes/bytearray/memoryview
+        A value that must never be reused for any other encryption.
+
+        There are no restrictions on its length,
+        but it is recommended to use at least 16 bytes.
+
+        The nonce shall never repeat for two
+        different messages encrypted with the same key,
+        but it does not need to be random.
+
+        If not provided, a 16 byte nonce will be randomly created.
+
+      mac_len : integer
+        Length of the MAC, in bytes.
+        It must be no larger than 16 bytes (which is the default).
+    """
+
+    try:
+        key = kwargs.pop("key")
+    except KeyError as e:
+        raise TypeError("Missing parameter:" + str(e))
+
+    nonce = kwargs.pop("nonce", None)
+    if nonce is None:
+        nonce = get_random_bytes(16)
+    mac_len = kwargs.pop("mac_len", 16)
+
+    # Not documented - only used for testing
+    use_clmul = kwargs.pop("use_clmul", True)
+    if use_clmul and _ghash_clmul:
+        ghash_c = _ghash_clmul
+    else:
+        ghash_c = _ghash_portable
+
+    return GcmMode(factory, key, nonce, mac_len, kwargs, ghash_c)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ocb.pyi

@@ -0,0 +1,36 @@
+from types import ModuleType
+from typing import Union, Any, Optional, Tuple, Dict, overload
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+class OcbMode(object):
+    block_size: int
+    nonce: Buffer
+
+    def __init__(self,
+                 factory: ModuleType,
+                 nonce: Buffer,
+                 mac_len: int,
+                 cipher_params: Dict) -> None: ...
+    
+    def update(self, assoc_data: Buffer) -> OcbMode: ...
+
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+
+    def digest(self) -> bytes: ...
+    def hexdigest(self) -> str: ...
+    def verify(self, received_mac_tag: Buffer) -> None: ...
+    def hexverify(self, hex_mac_tag: str) -> None: ...
+
+    def encrypt_and_digest(self,
+                           plaintext: Buffer) -> Tuple[bytes, bytes]: ...
+    def decrypt_and_verify(self,
+                           ciphertext: Buffer,
+                           received_mac_tag: Buffer) -> bytes: ...

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ofb.py

@@ -0,0 +1,282 @@
+# -*- coding: utf-8 -*-
+#
+#  Cipher/mode_ofb.py : OFB mode
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+"""
+Output Feedback (CFB) mode.
+"""
+
+__all__ = ['OfbMode']
+
+from Crypto.Util.py3compat import _copy_bytes
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
+                                  create_string_buffer, get_raw_buffer,
+                                  SmartPointer, c_size_t, c_uint8_ptr,
+                                  is_writeable_buffer)
+
+from Crypto.Random import get_random_bytes
+
+raw_ofb_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_ofb", """
+                        int OFB_start_operation(void *cipher,
+                                                const uint8_t iv[],
+                                                size_t iv_len,
+                                                void **pResult);
+                        int OFB_encrypt(void *ofbState,
+                                        const uint8_t *in,
+                                        uint8_t *out,
+                                        size_t data_len);
+                        int OFB_decrypt(void *ofbState,
+                                        const uint8_t *in,
+                                        uint8_t *out,
+                                        size_t data_len);
+                        int OFB_stop_operation(void *state);
+                        """
+                                        )
+
+
+class OfbMode(object):
+    """*Output FeedBack (OFB)*.
+
+    This mode is very similar to CBC, but it
+    transforms the underlying block cipher into a stream cipher.
+
+    The keystream is the iterated block encryption of the
+    previous ciphertext block.
+
+    An Initialization Vector (*IV*) is required.
+
+    See `NIST SP800-38A`_ , Section 6.4.
+
+    .. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
+
+    :undocumented: __init__
+    """
+
+    def __init__(self, block_cipher, iv):
+        """Create a new block cipher, configured in OFB mode.
+
+        :Parameters:
+          block_cipher : C pointer
+            A smart pointer to the low-level block cipher instance.
+
+          iv : bytes/bytearray/memoryview
+            The initialization vector to use for encryption or decryption.
+            It is as long as the cipher block.
+
+            **The IV must be a nonce, to to be reused for any other
+            message**. It shall be a nonce or a random value.
+
+            Reusing the *IV* for encryptions performed with the same key
+            compromises confidentiality.
+        """
+
+        self._state = VoidPointer()
+        result = raw_ofb_lib.OFB_start_operation(block_cipher.get(),
+                                                 c_uint8_ptr(iv),
+                                                 c_size_t(len(iv)),
+                                                 self._state.address_of())
+        if result:
+            raise ValueError("Error %d while instantiating the OFB mode"
+                             % result)
+
+        # Ensure that object disposal of this Python object will (eventually)
+        # free the memory allocated by the raw library for the cipher mode
+        self._state = SmartPointer(self._state.get(),
+                                   raw_ofb_lib.OFB_stop_operation)
+
+        # Memory allocated for the underlying block cipher is now owed
+        # by the cipher mode
+        block_cipher.release()
+
+        self.block_size = len(iv)
+        """The block size of the underlying cipher, in bytes."""
+
+        self.iv = _copy_bytes(None, None, iv)
+        """The Initialization Vector originally used to create the object.
+        The value does not change."""
+
+        self.IV = self.iv
+        """Alias for `iv`"""
+
+        self._next = ["encrypt", "decrypt"]
+
+    def encrypt(self, plaintext, output=None):
+        """Encrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have encrypted a message
+        you cannot encrypt (or decrypt) another message using the same
+        object.
+
+        The data to encrypt can be broken up in two or
+        more pieces and `encrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.encrypt(a) + c.encrypt(b)
+
+        is equivalent to:
+
+             >>> c.encrypt(a+b)
+
+        This function does not add any padding to the plaintext.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+          If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "encrypt" not in self._next:
+            raise TypeError("encrypt() cannot be called after decrypt()")
+        self._next = ["encrypt"]
+
+        if output is None:
+            ciphertext = create_string_buffer(len(plaintext))
+        else:
+            ciphertext = output
+
+            if not is_writeable_buffer(output):
+                raise TypeError("output must be a bytearray or a writeable memoryview")
+
+            if len(plaintext) != len(output):
+                raise ValueError("output must have the same length as the input"
+                                 "  (%d bytes)" % len(plaintext))
+
+        result = raw_ofb_lib.OFB_encrypt(self._state.get(),
+                                         c_uint8_ptr(plaintext),
+                                         c_uint8_ptr(ciphertext),
+                                         c_size_t(len(plaintext)))
+        if result:
+            raise ValueError("Error %d while encrypting in OFB mode" % result)
+
+        if output is None:
+            return get_raw_buffer(ciphertext)
+        else:
+            return None
+
+    def decrypt(self, ciphertext, output=None):
+        """Decrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have decrypted a message
+        you cannot decrypt (or encrypt) another message with the same
+        object.
+
+        The data to decrypt can be broken up in two or
+        more pieces and `decrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.decrypt(a) + c.decrypt(b)
+
+        is equivalent to:
+
+             >>> c.decrypt(a+b)
+
+        This function does not remove any padding from the plaintext.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+            It can be of any length.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext is written to.
+            If ``None``, the plaintext is returned.
+        :Return:
+          If ``output`` is ``None``, the plaintext is returned as ``bytes``.
+          Otherwise, ``None``.
+        """
+
+        if "decrypt" not in self._next:
+            raise TypeError("decrypt() cannot be called after encrypt()")
+        self._next = ["decrypt"]
+
+        if output is None:
+            plaintext = create_string_buffer(len(ciphertext))
+        else:
+            plaintext = output
+
+            if not is_writeable_buffer(output):
+                raise TypeError("output must be a bytearray or a writeable memoryview")
+
+            if len(ciphertext) != len(output):
+                raise ValueError("output must have the same length as the input"
+                                 "  (%d bytes)" % len(plaintext))
+
+        result = raw_ofb_lib.OFB_decrypt(self._state.get(),
+                                         c_uint8_ptr(ciphertext),
+                                         c_uint8_ptr(plaintext),
+                                         c_size_t(len(ciphertext)))
+        if result:
+            raise ValueError("Error %d while decrypting in OFB mode" % result)
+
+        if output is None:
+            return get_raw_buffer(plaintext)
+        else:
+            return None
+
+
+def _create_ofb_cipher(factory, **kwargs):
+    """Instantiate a cipher object that performs OFB encryption/decryption.
+
+    :Parameters:
+      factory : module
+        The underlying block cipher, a module from ``Crypto.Cipher``.
+
+    :Keywords:
+      iv : bytes/bytearray/memoryview
+        The IV to use for OFB.
+
+      IV : bytes/bytearray/memoryview
+        Alias for ``iv``.
+
+    Any other keyword will be passed to the underlying block cipher.
+    See the relevant documentation for details (at least ``key`` will need
+    to be present).
+    """
+
+    cipher_state = factory._create_base_cipher(kwargs)
+    iv = kwargs.pop("IV", None)
+    IV = kwargs.pop("iv", None)
+
+    if (None, None) == (iv, IV):
+        iv = get_random_bytes(factory.block_size)
+    if iv is not None:
+        if IV is not None:
+            raise TypeError("You must either use 'iv' or 'IV', not both")
+    else:
+        iv = IV
+
+    if len(iv) != factory.block_size:
+        raise ValueError("Incorrect IV length (it must be %d bytes long)" %
+                factory.block_size)
+
+    if kwargs:
+        raise TypeError("Unknown parameters for OFB: %s" % str(kwargs))
+
+    return OfbMode(cipher_state, iv)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_ofb.pyi

@@ -0,0 +1,25 @@
+from typing import Union, overload
+
+from Crypto.Util._raw_api import SmartPointer
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['OfbMode']
+
+class OfbMode(object):
+    block_size: int
+    iv: Buffer
+    IV: Buffer
+    
+    def __init__(self,
+                 block_cipher: SmartPointer,
+                 iv: Buffer) -> None: ...
+    @overload
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+    @overload
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+    @overload
+    def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
+

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_openpgp.py

@@ -0,0 +1,206 @@
+# ===================================================================
+#
+# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+"""
+OpenPGP mode.
+"""
+
+__all__ = ['OpenPgpMode']
+
+from Crypto.Util.py3compat import _copy_bytes
+from Crypto.Random import get_random_bytes
+
+class OpenPgpMode(object):
+    """OpenPGP mode.
+
+    This mode is a variant of CFB, and it is only used in PGP and
+    OpenPGP_ applications. If in doubt, use another mode.
+
+    An Initialization Vector (*IV*) is required.
+
+    Unlike CFB, the *encrypted* IV (not the IV itself) is
+    transmitted to the receiver.
+
+    The IV is a random data block. For legacy reasons, two of its bytes are
+    duplicated to act as a checksum for the correctness of the key, which is now
+    known to be insecure and is ignored. The encrypted IV is therefore 2 bytes
+    longer than the clean IV.
+
+    .. _OpenPGP: http://tools.ietf.org/html/rfc4880
+
+    :undocumented: __init__
+    """
+
+    def __init__(self, factory, key, iv, cipher_params):
+
+        #: The block size of the underlying cipher, in bytes.
+        self.block_size = factory.block_size
+
+        self._done_first_block = False  # True after the first encryption
+
+        # Instantiate a temporary cipher to process the IV
+        IV_cipher = factory.new(
+                        key,
+                        factory.MODE_CFB,
+                        IV=b'\x00' * self.block_size,
+                        segment_size=self.block_size * 8,
+                        **cipher_params)
+
+        iv = _copy_bytes(None, None, iv)
+
+        # The cipher will be used for...
+        if len(iv) == self.block_size:
+            # ... encryption
+            self._encrypted_IV = IV_cipher.encrypt(iv + iv[-2:])
+        elif len(iv) == self.block_size + 2:
+            # ... decryption
+            self._encrypted_IV = iv
+            # Last two bytes are for a deprecated "quick check" feature that
+            # should not be used. (https://eprint.iacr.org/2005/033)
+            iv = IV_cipher.decrypt(iv)[:-2]
+        else:
+            raise ValueError("Length of IV must be %d or %d bytes"
+                             " for MODE_OPENPGP"
+                             % (self.block_size, self.block_size + 2))
+
+        self.iv = self.IV = iv
+
+        # Instantiate the cipher for the real PGP data
+        self._cipher = factory.new(
+                            key,
+                            factory.MODE_CFB,
+                            IV=self._encrypted_IV[-self.block_size:],
+                            segment_size=self.block_size * 8,
+                            **cipher_params)
+
+    def encrypt(self, plaintext):
+        """Encrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have encrypted a message
+        you cannot encrypt (or decrypt) another message using the same
+        object.
+
+        The data to encrypt can be broken up in two or
+        more pieces and `encrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.encrypt(a) + c.encrypt(b)
+
+        is equivalent to:
+
+             >>> c.encrypt(a+b)
+
+        This function does not add any padding to the plaintext.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+
+        :Return:
+            the encrypted data, as a byte string.
+            It is as long as *plaintext* with one exception:
+            when encrypting the first message chunk,
+            the encypted IV is prepended to the returned ciphertext.
+        """
+
+        res = self._cipher.encrypt(plaintext)
+        if not self._done_first_block:
+            res = self._encrypted_IV + res
+            self._done_first_block = True
+        return res
+
+    def decrypt(self, ciphertext):
+        """Decrypt data with the key and the parameters set at initialization.
+
+        A cipher object is stateful: once you have decrypted a message
+        you cannot decrypt (or encrypt) another message with the same
+        object.
+
+        The data to decrypt can be broken up in two or
+        more pieces and `decrypt` can be called multiple times.
+
+        That is, the statement:
+
+            >>> c.decrypt(a) + c.decrypt(b)
+
+        is equivalent to:
+
+             >>> c.decrypt(a+b)
+
+        This function does not remove any padding from the plaintext.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+
+        :Return: the decrypted data (byte string).
+        """
+
+        return self._cipher.decrypt(ciphertext)
+
+
+def _create_openpgp_cipher(factory, **kwargs):
+    """Create a new block cipher, configured in OpenPGP mode.
+
+    :Parameters:
+      factory : module
+        The module.
+
+    :Keywords:
+      key : bytes/bytearray/memoryview
+        The secret key to use in the symmetric cipher.
+
+      IV : bytes/bytearray/memoryview
+        The initialization vector to use for encryption or decryption.
+
+        For encryption, the IV must be as long as the cipher block size.
+
+        For decryption, it must be 2 bytes longer (it is actually the
+        *encrypted* IV which was prefixed to the ciphertext).
+    """
+
+    iv = kwargs.pop("IV", None)
+    IV = kwargs.pop("iv", None)
+
+    if (None, None) == (iv, IV):
+        iv = get_random_bytes(factory.block_size)
+    if iv is not None:
+        if IV is not None:
+            raise TypeError("You must either use 'iv' or 'IV', not both")
+    else:
+        iv = IV
+
+    try:
+        key = kwargs.pop("key")
+    except KeyError as e:
+        raise TypeError("Missing component: " + str(e))
+
+    return OpenPgpMode(factory, key, iv, kwargs)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_openpgp.pyi

@@ -0,0 +1,20 @@
+from types import ModuleType
+from typing import Union, Dict
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+__all__ = ['OpenPgpMode']
+
+class OpenPgpMode(object):
+    block_size: int
+    iv: Union[bytes, bytearray, memoryview]
+    IV: Union[bytes, bytearray, memoryview]
+    
+    def __init__(self,
+                 factory: ModuleType,
+                 key: Buffer,
+                 iv: Buffer,
+                 cipher_params: Dict) -> None: ...
+    def encrypt(self, plaintext: Buffer) -> bytes: ...
+    def decrypt(self, plaintext: Buffer) -> bytes: ...
+

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_mode_siv.py

@@ -0,0 +1,392 @@
+# ===================================================================
+#
+# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+"""
+Synthetic Initialization Vector (SIV) mode.
+"""
+
+__all__ = ['SivMode']
+
+from binascii import hexlify, unhexlify
+
+from Crypto.Util.py3compat import bord, _copy_bytes
+
+from Crypto.Util._raw_api import is_buffer
+
+from Crypto.Util.number import long_to_bytes, bytes_to_long
+from Crypto.Protocol.KDF import _S2V
+from Crypto.Hash import BLAKE2s
+from Crypto.Random import get_random_bytes
+
+
+class SivMode(object):
+    """Synthetic Initialization Vector (SIV).
+
+    This is an Authenticated Encryption with Associated Data (`AEAD`_) mode.
+    It provides both confidentiality and authenticity.
+
+    The header of the message may be left in the clear, if needed, and it will
+    still be subject to authentication. The decryption step tells the receiver
+    if the message comes from a source that really knowns the secret key.
+    Additionally, decryption detects if any part of the message - including the
+    header - has been modified or corrupted.
+
+    Unlike other AEAD modes such as CCM, EAX or GCM, accidental reuse of a
+    nonce is not catastrophic for the confidentiality of the message. The only
+    effect is that an attacker can tell when the same plaintext (and same
+    associated data) is protected with the same key.
+
+    The length of the MAC is fixed to the block size of the underlying cipher.
+    The key size is twice the length of the key of the underlying cipher.
+
+    This mode is only available for AES ciphers.
+
+    +--------------------+---------------+-------------------+
+    |      Cipher        | SIV MAC size  |   SIV key length  |
+    |                    |    (bytes)    |     (bytes)       |
+    +====================+===============+===================+
+    |    AES-128         |      16       |        32         |
+    +--------------------+---------------+-------------------+
+    |    AES-192         |      16       |        48         |
+    +--------------------+---------------+-------------------+
+    |    AES-256         |      16       |        64         |
+    +--------------------+---------------+-------------------+
+
+    See `RFC5297`_ and the `original paper`__.
+
+    .. _RFC5297: https://tools.ietf.org/html/rfc5297
+    .. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
+    .. __: http://www.cs.ucdavis.edu/~rogaway/papers/keywrap.pdf
+
+    :undocumented: __init__
+    """
+
+    def __init__(self, factory, key, nonce, kwargs):
+
+        self.block_size = factory.block_size
+        """The block size of the underlying cipher, in bytes."""
+
+        self._factory = factory
+
+        self._cipher_params = kwargs
+
+        if len(key) not in (32, 48, 64):
+            raise ValueError("Incorrect key length (%d bytes)" % len(key))
+
+        if nonce is not None:
+            if not is_buffer(nonce):
+                raise TypeError("When provided, the nonce must be bytes, bytearray or memoryview")
+
+            if len(nonce) == 0:
+                raise ValueError("When provided, the nonce must be non-empty")
+
+            self.nonce = _copy_bytes(None, None, nonce)
+            """Public attribute is only available in case of non-deterministic
+            encryption."""
+
+        subkey_size = len(key) // 2
+
+        self._mac_tag = None  # Cache for MAC tag
+        self._kdf = _S2V(key[:subkey_size],
+                         ciphermod=factory,
+                         cipher_params=self._cipher_params)
+        self._subkey_cipher = key[subkey_size:]
+
+        # Purely for the purpose of verifying that cipher_params are OK
+        factory.new(key[:subkey_size], factory.MODE_ECB, **kwargs)
+
+        # Allowed transitions after initialization
+        self._next = ["update", "encrypt", "decrypt",
+                      "digest", "verify"]
+
+    def _create_ctr_cipher(self, v):
+        """Create a new CTR cipher from V in SIV mode"""
+
+        v_int = bytes_to_long(v)
+        q = v_int & 0xFFFFFFFFFFFFFFFF7FFFFFFF7FFFFFFF
+        return self._factory.new(
+                    self._subkey_cipher,
+                    self._factory.MODE_CTR,
+                    initial_value=q,
+                    nonce=b"",
+                    **self._cipher_params)
+
+    def update(self, component):
+        """Protect one associated data component
+
+        For SIV, the associated data is a sequence (*vector*) of non-empty
+        byte strings (*components*).
+
+        This method consumes the next component. It must be called
+        once for each of the components that constitue the associated data.
+
+        Note that the components have clear boundaries, so that:
+
+            >>> cipher.update(b"builtin")
+            >>> cipher.update(b"securely")
+
+        is not equivalent to:
+
+            >>> cipher.update(b"built")
+            >>> cipher.update(b"insecurely")
+
+        If there is no associated data, this method must not be called.
+
+        :Parameters:
+          component : bytes/bytearray/memoryview
+            The next associated data component.
+        """
+
+        if "update" not in self._next:
+            raise TypeError("update() can only be called"
+                                " immediately after initialization")
+
+        self._next = ["update", "encrypt", "decrypt",
+                      "digest", "verify"]
+
+        return self._kdf.update(component)
+
+    def encrypt(self, plaintext):
+        """
+        For SIV, encryption and MAC authentication must take place at the same
+        point. This method shall not be used.
+
+        Use `encrypt_and_digest` instead.
+        """
+
+        raise TypeError("encrypt() not allowed for SIV mode."
+                        " Use encrypt_and_digest() instead.")
+
+    def decrypt(self, ciphertext):
+        """
+        For SIV, decryption and verification must take place at the same
+        point. This method shall not be used.
+
+        Use `decrypt_and_verify` instead.
+        """
+
+        raise TypeError("decrypt() not allowed for SIV mode."
+                        " Use decrypt_and_verify() instead.")
+
+    def digest(self):
+        """Compute the *binary* MAC tag.
+
+        The caller invokes this function at the very end.
+
+        This method returns the MAC that shall be sent to the receiver,
+        together with the ciphertext.
+
+        :Return: the MAC, as a byte string.
+        """
+
+        if "digest" not in self._next:
+            raise TypeError("digest() cannot be called when decrypting"
+                            " or validating a message")
+        self._next = ["digest"]
+        if self._mac_tag is None:
+            self._mac_tag = self._kdf.derive()
+        return self._mac_tag
+
+    def hexdigest(self):
+        """Compute the *printable* MAC tag.
+
+        This method is like `digest`.
+
+        :Return: the MAC, as a hexadecimal string.
+        """
+        return "".join(["%02x" % bord(x) for x in self.digest()])
+
+    def verify(self, received_mac_tag):
+        """Validate the *binary* MAC tag.
+
+        The caller invokes this function at the very end.
+
+        This method checks if the decrypted message is indeed valid
+        (that is, if the key is correct) and it has not been
+        tampered with while in transit.
+
+        :Parameters:
+          received_mac_tag : bytes/bytearray/memoryview
+            This is the *binary* MAC, as received from the sender.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        if "verify" not in self._next:
+            raise TypeError("verify() cannot be called"
+                            " when encrypting a message")
+        self._next = ["verify"]
+
+        if self._mac_tag is None:
+            self._mac_tag = self._kdf.derive()
+
+        secret = get_random_bytes(16)
+
+        mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=self._mac_tag)
+        mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=received_mac_tag)
+
+        if mac1.digest() != mac2.digest():
+            raise ValueError("MAC check failed")
+
+    def hexverify(self, hex_mac_tag):
+        """Validate the *printable* MAC tag.
+
+        This method is like `verify`.
+
+        :Parameters:
+          hex_mac_tag : string
+            This is the *printable* MAC, as received from the sender.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        self.verify(unhexlify(hex_mac_tag))
+
+    def encrypt_and_digest(self, plaintext, output=None):
+        """Perform encrypt() and digest() in one step.
+
+        :Parameters:
+          plaintext : bytes/bytearray/memoryview
+            The piece of data to encrypt.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the ciphertext must be written to.
+            If ``None``, the ciphertext is returned.
+        :Return:
+            a tuple with two items:
+
+            - the ciphertext, as ``bytes``
+            - the MAC tag, as ``bytes``
+
+            The first item becomes ``None`` when the ``output`` parameter
+            specified a location for the result.
+        """
+
+        if "encrypt" not in self._next:
+            raise TypeError("encrypt() can only be called after"
+                            " initialization or an update()")
+
+        self._next = ["digest"]
+
+        # Compute V (MAC)
+        if hasattr(self, 'nonce'):
+            self._kdf.update(self.nonce)
+        self._kdf.update(plaintext)
+        self._mac_tag = self._kdf.derive()
+
+        cipher = self._create_ctr_cipher(self._mac_tag)
+
+        return cipher.encrypt(plaintext, output=output), self._mac_tag
+
+    def decrypt_and_verify(self, ciphertext, mac_tag, output=None):
+        """Perform decryption and verification in one step.
+
+        A cipher object is stateful: once you have decrypted a message
+        you cannot decrypt (or encrypt) another message with the same
+        object.
+
+        You cannot reuse an object for encrypting
+        or decrypting other data with the same key.
+
+        This function does not remove any padding from the plaintext.
+
+        :Parameters:
+          ciphertext : bytes/bytearray/memoryview
+            The piece of data to decrypt.
+            It can be of any length.
+          mac_tag : bytes/bytearray/memoryview
+            This is the *binary* MAC, as received from the sender.
+        :Keywords:
+          output : bytearray/memoryview
+            The location where the plaintext must be written to.
+            If ``None``, the plaintext is returned.
+        :Return: the plaintext as ``bytes`` or ``None`` when the ``output``
+            parameter specified a location for the result.
+        :Raises ValueError:
+            if the MAC does not match. The message has been tampered with
+            or the key is incorrect.
+        """
+
+        if "decrypt" not in self._next:
+            raise TypeError("decrypt() can only be called"
+                            " after initialization or an update()")
+        self._next = ["verify"]
+
+        # Take the MAC and start the cipher for decryption
+        self._cipher = self._create_ctr_cipher(mac_tag)
+
+        plaintext = self._cipher.decrypt(ciphertext, output=output)
+
+        if hasattr(self, 'nonce'):
+            self._kdf.update(self.nonce)
+        self._kdf.update(plaintext if output is None else output)
+        self.verify(mac_tag)
+
+        return plaintext
+
+
+def _create_siv_cipher(factory, **kwargs):
+    """Create a new block cipher, configured in
+    Synthetic Initializaton Vector (SIV) mode.
+
+    :Parameters:
+
+      factory : object
+        A symmetric cipher module from `Crypto.Cipher`
+        (like `Crypto.Cipher.AES`).
+
+    :Keywords:
+
+      key : bytes/bytearray/memoryview
+        The secret key to use in the symmetric cipher.
+        It must be 32, 48 or 64 bytes long.
+        If AES is the chosen cipher, the variants *AES-128*,
+        *AES-192* and or *AES-256* will be used internally.
+
+      nonce : bytes/bytearray/memoryview
+        For deterministic encryption, it is not present.
+
+        Otherwise, it is a value that must never be reused
+        for encrypting message under this key.
+
+        There are no restrictions on its length,
+        but it is recommended to use at least 16 bytes.
+    """
+
+    try:
+        key = kwargs.pop("key")
+    except KeyError as e:
+        raise TypeError("Missing parameter: " + str(e))
+
+    nonce = kwargs.pop("nonce", None)
+
+    return SivMode(factory, key, nonce, kwargs)

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_pkcs1_oaep_decode.py

@@ -0,0 +1,41 @@
+from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, c_size_t,
+                                  c_uint8_ptr)
+
+
+_raw_pkcs1_decode = load_pycryptodome_raw_lib("Crypto.Cipher._pkcs1_decode",
+                        """
+                        int pkcs1_decode(const uint8_t *em, size_t len_em,
+                                         const uint8_t *sentinel, size_t len_sentinel,
+                                         size_t expected_pt_len,
+                                         uint8_t *output);
+
+                        int oaep_decode(const uint8_t *em,
+                                        size_t em_len,
+                                        const uint8_t *lHash,
+                                        size_t hLen,
+                                        const uint8_t *db,
+                                        size_t db_len);
+                        """)
+
+
+def pkcs1_decode(em, sentinel, expected_pt_len, output):
+    if len(em) != len(output):
+        raise ValueError("Incorrect output length")
+
+    ret = _raw_pkcs1_decode.pkcs1_decode(c_uint8_ptr(em),
+                                         c_size_t(len(em)),
+                                         c_uint8_ptr(sentinel),
+                                         c_size_t(len(sentinel)),
+                                         c_size_t(expected_pt_len),
+                                         c_uint8_ptr(output))
+    return ret
+
+
+def oaep_decode(em, lHash, db):
+    ret = _raw_pkcs1_decode.oaep_decode(c_uint8_ptr(em),
+                                        c_size_t(len(em)),
+                                        c_uint8_ptr(lHash),
+                                        c_size_t(len(lHash)),
+                                        c_uint8_ptr(db),
+                                        c_size_t(len(db)))
+    return ret

minigpt2/lib/python3.10/site-packages/Crypto/Cipher/_raw_aesni.abi3.so

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1fd3c232c2ea188c6d6cc78a3527376ac6691ffe04c95ac420e6c5aa5bbc6b54
+size 106384

minigpt2/lib/python3.10/site-packages/Crypto/Util/Counter.py

@@ -0,0 +1,79 @@
+# -*- coding: ascii -*-
+#
+#  Util/Counter.py : Fast counter for use with CTR-mode ciphers
+#
+# Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net>
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+def new(nbits, prefix=b"", suffix=b"", initial_value=1, little_endian=False, allow_wraparound=False):
+    """Create a stateful counter block function suitable for CTR encryption modes.
+
+    Each call to the function returns the next counter block.
+    Each counter block is made up by three parts:
+
+    +------+--------------+-------+
+    |prefix| counter value|postfix|
+    +------+--------------+-------+
+
+    The counter value is incremented by 1 at each call.
+
+    Args:
+      nbits (integer):
+        Length of the desired counter value, in bits. It must be a multiple of 8.
+      prefix (byte string):
+        The constant prefix of the counter block. By default, no prefix is
+        used.
+      suffix (byte string):
+        The constant postfix of the counter block. By default, no suffix is
+        used.
+      initial_value (integer):
+        The initial value of the counter. Default value is 1.
+        Its length in bits must not exceed the argument ``nbits``.
+      little_endian (boolean):
+        If ``True``, the counter number will be encoded in little endian format.
+        If ``False`` (default), in big endian format.
+      allow_wraparound (boolean):
+        This parameter is ignored.
+        An ``OverflowError`` exception is always raised when the counter wraps
+        around to zero.
+    Returns:
+      An object that can be passed with the :data:`counter` parameter to a CTR mode
+      cipher.
+
+    It must hold that *len(prefix) + nbits//8 + len(suffix)* matches the
+    block size of the underlying block cipher.
+    """
+
+    if (nbits % 8) != 0:
+        raise ValueError("'nbits' must be a multiple of 8")
+
+    iv_bl = initial_value.bit_length()
+    if iv_bl > nbits:
+        raise ValueError("Initial value takes %d bits but it is longer than "
+                         "the counter (%d bits)" %
+                         (iv_bl, nbits))
+
+    # Ignore wraparound
+    return {"counter_len": nbits // 8,
+            "prefix": prefix,
+            "suffix": suffix,
+            "initial_value": initial_value,
+            "little_endian": little_endian
+            }

minigpt2/lib/python3.10/site-packages/Crypto/Util/Padding.py

@@ -0,0 +1,108 @@
+#
+# Util/Padding.py :  Functions to manage padding
+#
+# ===================================================================
+#
+# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+__all__ = [ 'pad', 'unpad' ]
+
+from Crypto.Util.py3compat import *
+
+
+def pad(data_to_pad, block_size, style='pkcs7'):
+    """Apply standard padding.
+
+    Args:
+      data_to_pad (byte string):
+        The data that needs to be padded.
+      block_size (integer):
+        The block boundary to use for padding. The output length is guaranteed
+        to be a multiple of :data:`block_size`.
+      style (string):
+        Padding algorithm. It can be *'pkcs7'* (default), *'iso7816'* or *'x923'*.
+
+    Return:
+      byte string : the original data with the appropriate padding added at the end.
+    """
+
+    padding_len = block_size-len(data_to_pad)%block_size
+    if style == 'pkcs7':
+        padding = bchr(padding_len)*padding_len
+    elif style == 'x923':
+        padding = bchr(0)*(padding_len-1) + bchr(padding_len)
+    elif style == 'iso7816':
+        padding = bchr(128) + bchr(0)*(padding_len-1)
+    else:
+        raise ValueError("Unknown padding style")
+    return data_to_pad + padding
+
+
+def unpad(padded_data, block_size, style='pkcs7'):
+    """Remove standard padding.
+
+    Args:
+      padded_data (byte string):
+        A piece of data with padding that needs to be stripped.
+      block_size (integer):
+        The block boundary to use for padding. The input length
+        must be a multiple of :data:`block_size`.
+      style (string):
+        Padding algorithm. It can be *'pkcs7'* (default), *'iso7816'* or *'x923'*.
+    Return:
+        byte string : data without padding.
+    Raises:
+      ValueError: if the padding is incorrect.
+    """
+
+    pdata_len = len(padded_data)
+    if pdata_len == 0:
+        raise ValueError("Zero-length input cannot be unpadded")
+    if pdata_len % block_size:
+        raise ValueError("Input data is not padded")
+    if style in ('pkcs7', 'x923'):
+        padding_len = bord(padded_data[-1])
+        if padding_len<1 or padding_len>min(block_size, pdata_len):
+            raise ValueError("Padding is incorrect.")
+        if style == 'pkcs7':
+            if padded_data[-padding_len:]!=bchr(padding_len)*padding_len:
+                raise ValueError("PKCS#7 padding is incorrect.")
+        else:
+            if padded_data[-padding_len:-1]!=bchr(0)*(padding_len-1):
+                raise ValueError("ANSI X.923 padding is incorrect.")
+    elif style == 'iso7816':
+        padding_len = pdata_len - padded_data.rfind(bchr(128))
+        if padding_len<1 or padding_len>min(block_size, pdata_len):
+            raise ValueError("Padding is incorrect.")
+        if padding_len>1 and padded_data[1-padding_len:]!=bchr(0)*(padding_len-1):
+            raise ValueError("ISO 7816-4 padding is incorrect.")
+    else:
+        raise ValueError("Unknown padding style")
+    return padded_data[:-padding_len]
+