| import base64
|
| import json
|
|
|
| def encrypt_payload(data_dict, key):
|
| """Encrypts the dictionary payload using a custom XOR cipher with shifting."""
|
| plain_text = json.dumps(data_dict)
|
| key_bytes = key.encode('utf-8')
|
| plain_bytes = plain_text.encode('utf-8')
|
| encrypted = bytearray()
|
|
|
| for i, b in enumerate(plain_bytes):
|
|
|
| k_byte = key_bytes[i % len(key_bytes)]
|
| shift = (i * 3) % 256
|
| val = b ^ k_byte ^ shift
|
| encrypted.append(val)
|
|
|
| return base64.b64encode(encrypted).decode('utf-8')
|
|
|
| def decrypt_payload(ciphertext, key):
|
| """Decrypts the base64-encoded ciphertext using the key."""
|
| encrypted_bytes = base64.b64decode(ciphertext)
|
| key_bytes = key.encode('utf-8')
|
| decrypted = bytearray()
|
|
|
| for i, b in enumerate(encrypted_bytes):
|
| k_byte = key_bytes[i % len(key_bytes)]
|
| shift = (i * 3) % 256
|
| val = b ^ k_byte ^ shift
|
| decrypted.append(val)
|
|
|
| return json.loads(decrypted.decode('utf-8'))
|
|
|
| def obfuscate_key(key):
|
| """Obfuscates the cipher key for safe transmission in HTML templates."""
|
| reversed_key = key[::-1]
|
| return base64.b64encode(reversed_key.encode('utf-8')).decode('utf-8')
|
|
|
