libgo/go/crypto/rc4/rc4_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 package rc4
   6
   7 import (
   8         "testing"
   9 )
  10
  11 type rc4Test struct {
  12         key, keystream []byte
  13 }
  14
  15 var golden = []rc4Test{
  16         // Test vectors from the original cypherpunk posting of ARC4:
  17         //   http://groups.google.com/group/sci.crypt/msg/10a300c9d21afca0?pli=1
  18         {
  19                 []byte{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
  20                 []byte{0x74, 0x94, 0xc2, 0xe7, 0x10, 0x4b, 0x08, 0x79},
  21         },
  22         {
  23                 []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
  24                 []byte{0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a},
  25         },
  26         {
  27                 []byte{0xef, 0x01, 0x23, 0x45},
  28                 []byte{0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf, 0xbd, 0x61},
  29         },
  30
  31         // Test vectors from the Wikipedia page: http://en.wikipedia.org/wiki/RC4
  32         {
  33                 []byte{0x4b, 0x65, 0x79},
  34                 []byte{0xeb, 0x9f, 0x77, 0x81, 0xb7, 0x34, 0xca, 0x72, 0xa7, 0x19},
  35         },
  36         {
  37                 []byte{0x57, 0x69, 0x6b, 0x69},
  38                 []byte{0x60, 0x44, 0xdb, 0x6d, 0x41, 0xb7},
  39         },
  40 }
  41
  42 func TestGolden(t *testing.T) {
  43         for i := 0; i < len(golden); i++ {
  44                 g := golden[i]
  45                 c, err := NewCipher(g.key)
  46                 if err != nil {
  47                         t.Errorf("Failed to create cipher at golden index %d", i)
  48                         return
  49                 }
  50                 keystream := make([]byte, len(g.keystream))
  51                 c.XORKeyStream(keystream)
  52                 for j, v := range keystream {
  53                         if g.keystream[j] != v {
  54                                 t.Errorf("Failed at golden index %d", i)
  55                                 break
  56                         }
  57                 }
  58         }
  59 }