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 // CTR 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. 55-58. 10 11 package cipher_test 12 13 import ( 14 "bytes" 15 "crypto/aes" 16 "crypto/cipher" 17 "testing" 18 ) 19 20 var commonCounter = []byte{0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff} 21 22 var ctrAESTests = []struct { 23 name string 24 key []byte 25 iv []byte 26 in []byte 27 out []byte 28 }{ 29 // NIST SP 800-38A pp 55-58 30 { 31 "CTR-AES128", 32 commonKey128, 33 commonCounter, 34 commonInput, 35 []byte{ 36 0x87, 0x4d, 0x61, 0x91, 0xb6, 0x20, 0xe3, 0x26, 0x1b, 0xef, 0x68, 0x64, 0x99, 0x0d, 0xb6, 0xce, 37 0x98, 0x06, 0xf6, 0x6b, 0x79, 0x70, 0xfd, 0xff, 0x86, 0x17, 0x18, 0x7b, 0xb9, 0xff, 0xfd, 0xff, 38 0x5a, 0xe4, 0xdf, 0x3e, 0xdb, 0xd5, 0xd3, 0x5e, 0x5b, 0x4f, 0x09, 0x02, 0x0d, 0xb0, 0x3e, 0xab, 39 0x1e, 0x03, 0x1d, 0xda, 0x2f, 0xbe, 0x03, 0xd1, 0x79, 0x21, 0x70, 0xa0, 0xf3, 0x00, 0x9c, 0xee, 40 }, 41 }, 42 { 43 "CTR-AES192", 44 commonKey192, 45 commonCounter, 46 commonInput, 47 []byte{ 48 0x1a, 0xbc, 0x93, 0x24, 0x17, 0x52, 0x1c, 0xa2, 0x4f, 0x2b, 0x04, 0x59, 0xfe, 0x7e, 0x6e, 0x0b, 49 0x09, 0x03, 0x39, 0xec, 0x0a, 0xa6, 0xfa, 0xef, 0xd5, 0xcc, 0xc2, 0xc6, 0xf4, 0xce, 0x8e, 0x94, 50 0x1e, 0x36, 0xb2, 0x6b, 0xd1, 0xeb, 0xc6, 0x70, 0xd1, 0xbd, 0x1d, 0x66, 0x56, 0x20, 0xab, 0xf7, 51 0x4f, 0x78, 0xa7, 0xf6, 0xd2, 0x98, 0x09, 0x58, 0x5a, 0x97, 0xda, 0xec, 0x58, 0xc6, 0xb0, 0x50, 52 }, 53 }, 54 { 55 "CTR-AES256", 56 commonKey256, 57 commonCounter, 58 commonInput, 59 []byte{ 60 0x60, 0x1e, 0xc3, 0x13, 0x77, 0x57, 0x89, 0xa5, 0xb7, 0xa7, 0xf5, 0x04, 0xbb, 0xf3, 0xd2, 0x28, 61 0xf4, 0x43, 0xe3, 0xca, 0x4d, 0x62, 0xb5, 0x9a, 0xca, 0x84, 0xe9, 0x90, 0xca, 0xca, 0xf5, 0xc5, 62 0x2b, 0x09, 0x30, 0xda, 0xa2, 0x3d, 0xe9, 0x4c, 0xe8, 0x70, 0x17, 0xba, 0x2d, 0x84, 0x98, 0x8d, 63 0xdf, 0xc9, 0xc5, 0x8d, 0xb6, 0x7a, 0xad, 0xa6, 0x13, 0xc2, 0xdd, 0x08, 0x45, 0x79, 0x41, 0xa6, 64 }, 65 }, 66 } 67 68 func TestCTR_AES(t *testing.T) { 69 for _, tt := range ctrAESTests { 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 for j := 0; j <= 5; j += 5 { 79 in := tt.in[0 : len(tt.in)-j] 80 ctr := cipher.NewCTR(c, tt.iv) 81 encrypted := make([]byte, len(in)) 82 ctr.XORKeyStream(encrypted, in) 83 if out := tt.out[0:len(in)]; !bytes.Equal(out, encrypted) { 84 t.Errorf("%s/%d: CTR\ninpt %x\nhave %x\nwant %x", test, len(in), in, encrypted, out) 85 } 86 } 87 88 for j := 0; j <= 7; j += 7 { 89 in := tt.out[0 : len(tt.out)-j] 90 ctr := cipher.NewCTR(c, tt.iv) 91 plain := make([]byte, len(in)) 92 ctr.XORKeyStream(plain, in) 93 if out := tt.in[0:len(in)]; !bytes.Equal(out, plain) { 94 t.Errorf("%s/%d: CTRReader\nhave %x\nwant %x", test, len(out), plain, out) 95 } 96 } 97 98 if t.Failed() { 99 break 100 } 101 } 102 } 103
