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1 /**
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2 * This file is part of the dcrypt project.
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3 *
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4 * Copyright: Copyright (C) dcrypt contributors 2008. All rights reserved.
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5 * License: MIT
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6 * Authors: Thomas Dixon
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7 */
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8
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9 module dcrypt.crypto.hashes.SHA224;
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10
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11 import dcrypt.crypto.hashes.SHA256;
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12
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13 /** Implementation of SHA-224. */
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14 class SHA224 : SHA256 {
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15 this (void[] input_=null) {
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16 reset();
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17 super(input_);
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18 }
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19
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20 uint digestSize() {
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21 return 28;
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22 }
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23
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24 char[] name() {
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25 return "SHA224";
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26 }
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27
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28 ubyte[] digest() {
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29 padMessage(MODE_SHA);
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30
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31 ubyte[] result = new ubyte[digestSize];
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32
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33 Util.uintToUbytesBig(h0, result, 0);
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34 Util.uintToUbytesBig(h1, result, 4);
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35 Util.uintToUbytesBig(h2, result, 8);
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36 Util.uintToUbytesBig(h3, result, 12);
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37 Util.uintToUbytesBig(h4, result, 16);
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38 Util.uintToUbytesBig(h5, result, 20);
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39 Util.uintToUbytesBig(h6, result, 24);
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40
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41 reset();
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42 return result;
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43 }
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44
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45 void reset() {
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46 super.reset();
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47 h0 = 0xc1059ed8u;
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48 h1 = 0x367cd507u;
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49 h2 = 0x3070dd17u;
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50 h3 = 0xf70e5939u;
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51 h4 = 0xffc00b31u;
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52 h5 = 0x68581511u;
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53 h6 = 0x64f98fa7u;
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54 h7 = 0xbefa4fa4u;
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55 }
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56
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57 version (UnitTest) {
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58 unittest {
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59 static const char[][] test_inputs = [
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60 "",
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61 "abc",
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62 "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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63 "a"
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64 ];
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65
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66 static const int[] test_repeat = [
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67 1, 1, 1, 1000000
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68 ];
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69
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70 static const char[][] test_results = [
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71 "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f",
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72 "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7",
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73 "75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525",
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74 "20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67"
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75 ];
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76
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77 SHA224 h = new SHA224();
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78 foreach (uint i, char[] input; test_inputs) {
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79 for (int j = 0; j < test_repeat[i]; j++)
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80 h.update(input);
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81 char[] digest = h.hexDigest();
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82 assert(digest == test_results[i],
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83 h.name()~": ("~digest~") != ("~test_results[i]~")");
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84 }
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85 }
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86 }
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87 }
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