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Source file src/crypto/cipher/cbc_aes_test.go

Documentation: crypto/cipher

  // 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.
  
  // CBC AES test vectors.
  
  // See U.S. National Institute of Standards and Technology (NIST)
  // Special Publication 800-38A, ``Recommendation for Block Cipher
  // Modes of Operation,'' 2001 Edition, pp. 24-29.
  
  package cipher_test
  
  import (
  	"bytes"
  	"crypto/aes"
  	"crypto/cipher"
  	"testing"
  )
  
  var cbcAESTests = []struct {
  	name string
  	key  []byte
  	iv   []byte
  	in   []byte
  	out  []byte
  }{
  	// NIST SP 800-38A pp 27-29
  	{
  		"CBC-AES128",
  		commonKey128,
  		commonIV,
  		commonInput,
  		[]byte{
  			0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
  			0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
  			0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
  			0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7,
  		},
  	},
  	{
  		"CBC-AES192",
  		commonKey192,
  		commonIV,
  		commonInput,
  		[]byte{
  			0x4f, 0x02, 0x1d, 0xb2, 0x43, 0xbc, 0x63, 0x3d, 0x71, 0x78, 0x18, 0x3a, 0x9f, 0xa0, 0x71, 0xe8,
  			0xb4, 0xd9, 0xad, 0xa9, 0xad, 0x7d, 0xed, 0xf4, 0xe5, 0xe7, 0x38, 0x76, 0x3f, 0x69, 0x14, 0x5a,
  			0x57, 0x1b, 0x24, 0x20, 0x12, 0xfb, 0x7a, 0xe0, 0x7f, 0xa9, 0xba, 0xac, 0x3d, 0xf1, 0x02, 0xe0,
  			0x08, 0xb0, 0xe2, 0x79, 0x88, 0x59, 0x88, 0x81, 0xd9, 0x20, 0xa9, 0xe6, 0x4f, 0x56, 0x15, 0xcd,
  		},
  	},
  	{
  		"CBC-AES256",
  		commonKey256,
  		commonIV,
  		commonInput,
  		[]byte{
  			0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba, 0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,
  			0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d, 0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,
  			0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf, 0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,
  			0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc, 0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b,
  		},
  	},
  }
  
  func TestCBCEncrypterAES(t *testing.T) {
  	for _, test := range cbcAESTests {
  		c, err := aes.NewCipher(test.key)
  		if err != nil {
  			t.Errorf("%s: NewCipher(%d bytes) = %s", test.name, len(test.key), err)
  			continue
  		}
  
  		encrypter := cipher.NewCBCEncrypter(c, test.iv)
  
  		data := make([]byte, len(test.in))
  		copy(data, test.in)
  
  		encrypter.CryptBlocks(data, data)
  		if !bytes.Equal(test.out, data) {
  			t.Errorf("%s: CBCEncrypter\nhave %x\nwant %x", test.name, data, test.out)
  		}
  	}
  }
  
  func TestCBCDecrypterAES(t *testing.T) {
  	for _, test := range cbcAESTests {
  		c, err := aes.NewCipher(test.key)
  		if err != nil {
  			t.Errorf("%s: NewCipher(%d bytes) = %s", test.name, len(test.key), err)
  			continue
  		}
  
  		decrypter := cipher.NewCBCDecrypter(c, test.iv)
  
  		data := make([]byte, len(test.out))
  		copy(data, test.out)
  
  		decrypter.CryptBlocks(data, data)
  		if !bytes.Equal(test.in, data) {
  			t.Errorf("%s: CBCDecrypter\nhave %x\nwant %x", test.name, data, test.in)
  		}
  	}
  }
  

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