libgo/go/crypto/block/cbc_aes_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // CBC AES test vectors.
   6
   7 // See U.S. National Institute of Standards and Technology (NIST)
   8 // Special Publication 800-38A, ``Recommendation for Block Cipher
   9 // Modes of Operation,'' 2001 Edition, pp. 24-29.
  10
  11 package block
  12
  13 import (
  14         "bytes"
  15         "crypto/aes"
  16         "io"
  17         "testing"
  18 )
  19
  20 type cbcTest struct {
  21         name string
  22         key  []byte
  23         iv   []byte
  24         in   []byte
  25         out  []byte
  26 }
  27
  28 var cbcAESTests = []cbcTest{
  29         // NIST SP 800-38A pp 27-29
  30         {
  31                 "CBC-AES128",
  32                 commonKey128,
  33                 commonIV,
  34                 commonInput,
  35                 []byte{
  36                         0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
  37                         0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
  38                         0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
  39                         0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7,
  40                 },
  41         },
  42         {
  43                 "CBC-AES192",
  44                 commonKey192,
  45                 commonIV,
  46                 commonInput,
  47                 []byte{
  48                         0x4f, 0x02, 0x1d, 0xb2, 0x43, 0xbc, 0x63, 0x3d, 0x71, 0x78, 0x18, 0x3a, 0x9f, 0xa0, 0x71, 0xe8,
  49                         0xb4, 0xd9, 0xad, 0xa9, 0xad, 0x7d, 0xed, 0xf4, 0xe5, 0xe7, 0x38, 0x76, 0x3f, 0x69, 0x14, 0x5a,
  50                         0x57, 0x1b, 0x24, 0x20, 0x12, 0xfb, 0x7a, 0xe0, 0x7f, 0xa9, 0xba, 0xac, 0x3d, 0xf1, 0x02, 0xe0,
  51                         0x08, 0xb0, 0xe2, 0x79, 0x88, 0x59, 0x88, 0x81, 0xd9, 0x20, 0xa9, 0xe6, 0x4f, 0x56, 0x15, 0xcd,
  52                 },
  53         },
  54         {
  55                 "CBC-AES256",
  56                 commonKey256,
  57                 commonIV,
  58                 commonInput,
  59                 []byte{
  60                         0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba, 0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,
  61                         0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d, 0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,
  62                         0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf, 0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,
  63                         0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc, 0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b,
  64                 },
  65         },
  66 }
  67
  68 func TestCBC_AES(t *testing.T) {
  69         for _, tt := range cbcAESTests {
  70                 test := tt.name
  71
  72                 c, err := aes.NewCipher(tt.key)
  73                 if err != nil {
  74                         t.Errorf("%s: NewCipher(%d bytes) = %s", test, len(tt.key), err)
  75                         continue
  76                 }
  77
  78                 var crypt bytes.Buffer
  79                 w := NewCBCEncrypter(c, tt.iv, &crypt)
  80                 var r io.Reader = bytes.NewBuffer(tt.in)
  81                 n, err := io.Copy(w, r)
  82                 if n != int64(len(tt.in)) || err != nil {
  83                         t.Errorf("%s: CBCEncrypter io.Copy = %d, %v want %d, nil", test, n, err, len(tt.in))
  84                 } else if d := crypt.Bytes(); !same(tt.out, d) {
  85                         t.Errorf("%s: CBCEncrypter\nhave %x\nwant %x", test, d, tt.out)
  86                 }
  87
  88                 var plain bytes.Buffer
  89                 r = NewCBCDecrypter(c, tt.iv, bytes.NewBuffer(tt.out))
  90                 w = &plain
  91                 n, err = io.Copy(w, r)
  92                 if n != int64(len(tt.out)) || err != nil {
  93                         t.Errorf("%s: CBCDecrypter io.Copy = %d, %v want %d, nil", test, n, err, len(tt.out))
  94                 } else if d := plain.Bytes(); !same(tt.in, d) {
  95                         t.Errorf("%s: CBCDecrypter\nhave %x\nwant %x", test, d, tt.in)
  96                 }
  97
  98                 if t.Failed() {
  99                         break
 100                 }
 101         }
 102 }