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4bcc2be | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | // Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package aes
import (
"crypto/internal/boring"
"crypto/internal/cryptotest"
"fmt"
"testing"
)
// Test vectors are from FIPS 197:
// https://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
// Appendix B, C of FIPS 197: Cipher examples, Example vectors.
type CryptTest struct {
key []byte
in []byte
out []byte
}
var encryptTests = []CryptTest{
{
// Appendix B.
[]byte{0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c},
[]byte{0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34},
[]byte{0x39, 0x25, 0x84, 0x1d, 0x02, 0xdc, 0x09, 0xfb, 0xdc, 0x11, 0x85, 0x97, 0x19, 0x6a, 0x0b, 0x32},
},
{
// Appendix C.1. AES-128
[]byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f},
[]byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff},
[]byte{0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4, 0xc5, 0x5a},
},
{
// Appendix C.2. AES-192
[]byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
},
[]byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff},
[]byte{0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, 0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d, 0x71, 0x91},
},
{
// Appendix C.3. AES-256
[]byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
},
[]byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff},
[]byte{0x8e, 0xa2, 0xb7, 0xca, 0x51, 0x67, 0x45, 0xbf, 0xea, 0xfc, 0x49, 0x90, 0x4b, 0x49, 0x60, 0x89},
},
}
// Test Cipher Encrypt method against FIPS 197 examples.
func TestCipherEncrypt(t *testing.T) {
cryptotest.TestAllImplementations(t, "aes", testCipherEncrypt)
}
func testCipherEncrypt(t *testing.T) {
for i, tt := range encryptTests {
c, err := NewCipher(tt.key)
if err != nil {
t.Errorf("NewCipher(%d bytes) = %s", len(tt.key), err)
continue
}
out := make([]byte, len(tt.in))
c.Encrypt(out, tt.in)
for j, v := range out {
if v != tt.out[j] {
t.Errorf("Cipher.Encrypt %d: out[%d] = %#x, want %#x", i, j, v, tt.out[j])
break
}
}
}
}
// Test Cipher Decrypt against FIPS 197 examples.
func TestCipherDecrypt(t *testing.T) {
cryptotest.TestAllImplementations(t, "aes", testCipherDecrypt)
}
func testCipherDecrypt(t *testing.T) {
for i, tt := range encryptTests {
c, err := NewCipher(tt.key)
if err != nil {
t.Errorf("NewCipher(%d bytes) = %s", len(tt.key), err)
continue
}
plain := make([]byte, len(tt.in))
c.Decrypt(plain, tt.out)
for j, v := range plain {
if v != tt.in[j] {
t.Errorf("decryptBlock %d: plain[%d] = %#x, want %#x", i, j, v, tt.in[j])
break
}
}
}
}
// Test AES against the general cipher.Block interface tester
func TestAESBlock(t *testing.T) {
cryptotest.TestAllImplementations(t, "aes", testAESBlock)
}
func testAESBlock(t *testing.T) {
for _, keylen := range []int{128, 192, 256} {
t.Run(fmt.Sprintf("AES-%d", keylen), func(t *testing.T) {
cryptotest.TestBlock(t, keylen/8, NewCipher)
})
}
}
func TestExtraMethods(t *testing.T) {
if boring.Enabled {
t.Skip("Go+BoringCrypto still uses the interface upgrades in crypto/cipher")
}
cryptotest.TestAllImplementations(t, "aes", func(t *testing.T) {
b, _ := NewCipher(make([]byte, 16))
cryptotest.NoExtraMethods(t, &b)
})
}
func BenchmarkEncrypt(b *testing.B) {
b.Run("AES-128", func(b *testing.B) { benchmarkEncrypt(b, encryptTests[1]) })
b.Run("AES-192", func(b *testing.B) { benchmarkEncrypt(b, encryptTests[2]) })
b.Run("AES-256", func(b *testing.B) { benchmarkEncrypt(b, encryptTests[3]) })
}
func benchmarkEncrypt(b *testing.B, tt CryptTest) {
c, err := NewCipher(tt.key)
if err != nil {
b.Fatal("NewCipher:", err)
}
out := make([]byte, len(tt.in))
b.SetBytes(int64(len(out)))
b.ResetTimer()
for i := 0; i < b.N; i++ {
c.Encrypt(out, tt.in)
}
}
func BenchmarkDecrypt(b *testing.B) {
b.Run("AES-128", func(b *testing.B) { benchmarkDecrypt(b, encryptTests[1]) })
b.Run("AES-192", func(b *testing.B) { benchmarkDecrypt(b, encryptTests[2]) })
b.Run("AES-256", func(b *testing.B) { benchmarkDecrypt(b, encryptTests[3]) })
}
func benchmarkDecrypt(b *testing.B, tt CryptTest) {
c, err := NewCipher(tt.key)
if err != nil {
b.Fatal("NewCipher:", err)
}
out := make([]byte, len(tt.out))
b.SetBytes(int64(len(out)))
b.ResetTimer()
for i := 0; i < b.N; i++ {
c.Decrypt(out, tt.out)
}
}
func BenchmarkCreateCipher(b *testing.B) {
b.Run("AES-128", func(b *testing.B) { benchmarkCreateCipher(b, encryptTests[1]) })
b.Run("AES-192", func(b *testing.B) { benchmarkCreateCipher(b, encryptTests[2]) })
b.Run("AES-256", func(b *testing.B) { benchmarkCreateCipher(b, encryptTests[3]) })
}
func benchmarkCreateCipher(b *testing.B, tt CryptTest) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
if _, err := NewCipher(tt.key); err != nil {
b.Fatal(err)
}
}
}
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