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132
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1 /*******************************************************************************
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2
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3 copyright: Copyright (c) 2006 Tango. All rights reserved
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4
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5 license: BSD style: see doc/license.txt for details
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6
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7 version: Initial release: Feb 2006
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8
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9 author: Regan Heath, Oskar Linde
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10
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11 This module implements the SHA-0 Algorithm described by Secure
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12 Hash Standard, FIPS PUB 180
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13
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14 *******************************************************************************/
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15
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16 module tango.io.digest.Sha0;
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17
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18 private import tango.io.digest.Sha01;
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19
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20 public import tango.io.digest.Digest;
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21
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22 /*******************************************************************************
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23
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24 *******************************************************************************/
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25
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26 final class Sha0 : Sha01
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27 {
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28 /***********************************************************************
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29
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30 Construct an Sha0
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31
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32 ***********************************************************************/
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33
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34 this() { }
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35
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36 /***********************************************************************
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37
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38 ***********************************************************************/
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39
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40 final protected override void transform(ubyte[] input)
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41 {
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42 uint A,B,C,D,E,TEMP;
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43 uint[16] W;
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44 uint s;
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45
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46 bigEndian32(input,W);
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47
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48 A = context[0];
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49 B = context[1];
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50 C = context[2];
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51 D = context[3];
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52 E = context[4];
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53
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54 for(uint t = 0; t < 80; t++) {
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55 s = t & mask;
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56 if (t >= 16) expand(W,s);
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57 TEMP = rotateLeft(A,5) + f(t,B,C,D) + E + W[s] + K[t/20];
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58 E = D; D = C; C = rotateLeft(B,30); B = A; A = TEMP;
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59 }
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60
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61 context[0] += A;
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62 context[1] += B;
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63 context[2] += C;
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64 context[3] += D;
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65 context[4] += E;
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66 }
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67
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68 /***********************************************************************
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69
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70 ***********************************************************************/
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71
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72 final static protected void expand(uint W[], uint s)
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73 {
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74 W[s] = W[(s+13)&mask] ^ W[(s+8)&mask] ^ W[(s+2)&mask] ^ W[s];
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75 }
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76
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77
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78 }
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79
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80
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81 /*******************************************************************************
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82
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83 *******************************************************************************/
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84
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85 version (UnitTest)
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86 {
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87 unittest
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88 {
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89 static char[][] strings =
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90 [
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91 "",
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92 "abc",
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93 "message digest",
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94 "abcdefghijklmnopqrstuvwxyz",
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95 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
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96 "12345678901234567890123456789012345678901234567890123456789012345678901234567890"
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97 ];
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98
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99 static char[][] results =
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100 [
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101 "f96cea198ad1dd5617ac084a3d92c6107708c0ef",
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102 "0164b8a914cd2a5e74c4f7ff082c4d97f1edf880",
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103 "c1b0f222d150ebb9aa36a40cafdc8bcbed830b14",
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104 "b40ce07a430cfd3c033039b9fe9afec95dc1bdcd",
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105 "79e966f7a3a990df33e40e3d7f8f18d2caebadfa",
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106 "4aa29d14d171522ece47bee8957e35a41f3e9cff",
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107 ];
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108
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109 Sha0 h = new Sha0();
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110
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111 foreach (int i, char[] s; strings)
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112 {
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113 h.update(s);
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114 char[] d = h.hexDigest();
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115 assert(d == results[i],":("~s~")("~d~")!=("~results[i]~")");
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116 }
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117 }
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118 }
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