1 | /** |
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2 | * @author diogenes |
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3 | */ |
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4 | var MD5 = function (string) { |
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5 | |
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6 | function RotateLeft(lValue, iShiftBits) { |
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7 | return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits)); |
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8 | } |
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9 | |
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10 | function AddUnsigned(lX,lY) { |
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11 | var lX4,lY4,lX8,lY8,lResult; |
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12 | lX8 = (lX & 0x80000000); |
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13 | lY8 = (lY & 0x80000000); |
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14 | lX4 = (lX & 0x40000000); |
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15 | lY4 = (lY & 0x40000000); |
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16 | lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF); |
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17 | if (lX4 & lY4) { |
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18 | return (lResult ^ 0x80000000 ^ lX8 ^ lY8); |
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19 | } |
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20 | if (lX4 | lY4) { |
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21 | if (lResult & 0x40000000) { |
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22 | return (lResult ^ 0xC0000000 ^ lX8 ^ lY8); |
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23 | } else { |
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24 | return (lResult ^ 0x40000000 ^ lX8 ^ lY8); |
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25 | } |
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26 | } else { |
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27 | return (lResult ^ lX8 ^ lY8); |
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28 | } |
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29 | } |
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30 | |
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31 | function F(x,y,z) { return (x & y) | ((~x) & z); } |
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32 | function G(x,y,z) { return (x & z) | (y & (~z)); } |
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33 | function H(x,y,z) { return (x ^ y ^ z); } |
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34 | function I(x,y,z) { return (y ^ (x | (~z))); } |
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35 | |
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36 | function FF(a,b,c,d,x,s,ac) { |
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37 | a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac)); |
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38 | return AddUnsigned(RotateLeft(a, s), b); |
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39 | }; |
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40 | |
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41 | function GG(a,b,c,d,x,s,ac) { |
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42 | a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac)); |
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43 | return AddUnsigned(RotateLeft(a, s), b); |
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44 | }; |
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45 | |
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46 | function HH(a,b,c,d,x,s,ac) { |
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47 | a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac)); |
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48 | return AddUnsigned(RotateLeft(a, s), b); |
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49 | }; |
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50 | |
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51 | function II(a,b,c,d,x,s,ac) { |
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52 | a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac)); |
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53 | return AddUnsigned(RotateLeft(a, s), b); |
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54 | }; |
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55 | |
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56 | function ConvertToWordArray(string) { |
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57 | var lWordCount; |
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58 | var lMessageLength = string.length; |
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59 | var lNumberOfWords_temp1=lMessageLength + 8; |
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60 | var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64; |
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61 | var lNumberOfWords = (lNumberOfWords_temp2+1)*16; |
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62 | var lWordArray=Array(lNumberOfWords-1); |
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63 | var lBytePosition = 0; |
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64 | var lByteCount = 0; |
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65 | while ( lByteCount < lMessageLength ) { |
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66 | lWordCount = (lByteCount-(lByteCount % 4))/4; |
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67 | lBytePosition = (lByteCount % 4)*8; |
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68 | lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition)); |
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69 | lByteCount++; |
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70 | } |
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71 | lWordCount = (lByteCount-(lByteCount % 4))/4; |
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72 | lBytePosition = (lByteCount % 4)*8; |
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73 | lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition); |
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74 | lWordArray[lNumberOfWords-2] = lMessageLength<<3; |
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75 | lWordArray[lNumberOfWords-1] = lMessageLength>>>29; |
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76 | return lWordArray; |
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77 | }; |
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78 | |
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79 | function WordToHex(lValue) { |
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80 | var WordToHexValue="",WordToHexValue_temp="",lByte,lCount; |
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81 | for (lCount = 0;lCount<=3;lCount++) { |
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82 | lByte = (lValue>>>(lCount*8)) & 255; |
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83 | WordToHexValue_temp = "0" + lByte.toString(16); |
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84 | WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2); |
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85 | } |
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86 | return WordToHexValue; |
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87 | }; |
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88 | |
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89 | function Utf8Encode(string) { |
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90 | string = string.replace(/\r\n/g,"\n"); |
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91 | var utftext = ""; |
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92 | |
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93 | for (var n = 0; n < string.length; n++) { |
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94 | |
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95 | var c = string.charCodeAt(n); |
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96 | |
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97 | if (c < 128) { |
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98 | utftext += String.fromCharCode(c); |
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99 | } |
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100 | else if((c > 127) && (c < 2048)) { |
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101 | utftext += String.fromCharCode((c >> 6) | 192); |
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102 | utftext += String.fromCharCode((c & 63) | 128); |
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103 | } |
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104 | else { |
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105 | utftext += String.fromCharCode((c >> 12) | 224); |
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106 | utftext += String.fromCharCode(((c >> 6) & 63) | 128); |
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107 | utftext += String.fromCharCode((c & 63) | 128); |
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108 | } |
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109 | |
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110 | } |
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111 | |
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112 | return utftext; |
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113 | }; |
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114 | |
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115 | var x=Array(); |
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116 | var k,AA,BB,CC,DD,a,b,c,d; |
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117 | var S11=7, S12=12, S13=17, S14=22; |
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118 | var S21=5, S22=9 , S23=14, S24=20; |
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119 | var S31=4, S32=11, S33=16, S34=23; |
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120 | var S41=6, S42=10, S43=15, S44=21; |
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121 | |
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122 | string = Utf8Encode(string); |
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123 | |
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124 | x = ConvertToWordArray(string); |
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125 | |
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126 | a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; |
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127 | |
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128 | for (k=0;k<x.length;k+=16) { |
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129 | AA=a; BB=b; CC=c; DD=d; |
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130 | a=FF(a,b,c,d,x[k+0], S11,0xD76AA478); |
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131 | d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756); |
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132 | c=FF(c,d,a,b,x[k+2], S13,0x242070DB); |
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133 | b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE); |
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134 | a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF); |
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135 | d=FF(d,a,b,c,x[k+5], S12,0x4787C62A); |
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136 | c=FF(c,d,a,b,x[k+6], S13,0xA8304613); |
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137 | b=FF(b,c,d,a,x[k+7], S14,0xFD469501); |
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138 | a=FF(a,b,c,d,x[k+8], S11,0x698098D8); |
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139 | d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF); |
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140 | c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1); |
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141 | b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE); |
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142 | a=FF(a,b,c,d,x[k+12],S11,0x6B901122); |
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143 | d=FF(d,a,b,c,x[k+13],S12,0xFD987193); |
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144 | c=FF(c,d,a,b,x[k+14],S13,0xA679438E); |
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145 | b=FF(b,c,d,a,x[k+15],S14,0x49B40821); |
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146 | a=GG(a,b,c,d,x[k+1], S21,0xF61E2562); |
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147 | d=GG(d,a,b,c,x[k+6], S22,0xC040B340); |
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148 | c=GG(c,d,a,b,x[k+11],S23,0x265E5A51); |
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149 | b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA); |
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150 | a=GG(a,b,c,d,x[k+5], S21,0xD62F105D); |
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151 | d=GG(d,a,b,c,x[k+10],S22,0x2441453); |
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152 | c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681); |
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153 | b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8); |
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154 | a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6); |
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155 | d=GG(d,a,b,c,x[k+14],S22,0xC33707D6); |
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156 | c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87); |
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157 | b=GG(b,c,d,a,x[k+8], S24,0x455A14ED); |
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158 | a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905); |
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159 | d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8); |
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160 | c=GG(c,d,a,b,x[k+7], S23,0x676F02D9); |
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161 | b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A); |
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162 | a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942); |
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163 | d=HH(d,a,b,c,x[k+8], S32,0x8771F681); |
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164 | c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122); |
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165 | b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C); |
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166 | a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44); |
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167 | d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9); |
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168 | c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60); |
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169 | b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70); |
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170 | a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6); |
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171 | d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA); |
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172 | c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085); |
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173 | b=HH(b,c,d,a,x[k+6], S34,0x4881D05); |
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174 | a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039); |
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175 | d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5); |
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176 | c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8); |
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177 | b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665); |
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178 | a=II(a,b,c,d,x[k+0], S41,0xF4292244); |
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179 | d=II(d,a,b,c,x[k+7], S42,0x432AFF97); |
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180 | c=II(c,d,a,b,x[k+14],S43,0xAB9423A7); |
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181 | b=II(b,c,d,a,x[k+5], S44,0xFC93A039); |
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182 | a=II(a,b,c,d,x[k+12],S41,0x655B59C3); |
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183 | d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92); |
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184 | c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D); |
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185 | b=II(b,c,d,a,x[k+1], S44,0x85845DD1); |
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186 | a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F); |
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187 | d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0); |
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188 | c=II(c,d,a,b,x[k+6], S43,0xA3014314); |
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189 | b=II(b,c,d,a,x[k+13],S44,0x4E0811A1); |
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190 | a=II(a,b,c,d,x[k+4], S41,0xF7537E82); |
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191 | d=II(d,a,b,c,x[k+11],S42,0xBD3AF235); |
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192 | c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB); |
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193 | b=II(b,c,d,a,x[k+9], S44,0xEB86D391); |
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194 | a=AddUnsigned(a,AA); |
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195 | b=AddUnsigned(b,BB); |
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196 | c=AddUnsigned(c,CC); |
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197 | d=AddUnsigned(d,DD); |
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198 | } |
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199 | |
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200 | var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d); |
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201 | |
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202 | return temp.toLowerCase(); |
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203 | } |
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