md5.js 8.7 KB

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  1. function md5(string) {
  2. function md5_RotateLeft(lValue, iShiftBits) {
  3. return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
  4. }
  5. function md5_AddUnsigned(lX, lY) {
  6. var lX4, lY4, lX8, lY8, lResult;
  7. lX8 = (lX & 0x80000000);
  8. lY8 = (lY & 0x80000000);
  9. lX4 = (lX & 0x40000000);
  10. lY4 = (lY & 0x40000000);
  11. lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
  12. if (lX4 & lY4) {
  13. return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
  14. }
  15. if (lX4 | lY4) {
  16. if (lResult & 0x40000000) {
  17. return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
  18. } else {
  19. return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
  20. }
  21. } else {
  22. return (lResult ^ lX8 ^ lY8);
  23. }
  24. }
  25. function md5_F(x, y, z) {
  26. return (x & y) | ((~x) & z);
  27. }
  28. function md5_G(x, y, z) {
  29. return (x & z) | (y & (~z));
  30. }
  31. function md5_H(x, y, z) {
  32. return (x ^ y ^ z);
  33. }
  34. function md5_I(x, y, z) {
  35. return (y ^ (x | (~z)));
  36. }
  37. function md5_FF(a, b, c, d, x, s, ac) {
  38. a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_F(b, c, d), x), ac));
  39. return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  40. };
  41. function md5_GG(a, b, c, d, x, s, ac) {
  42. a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_G(b, c, d), x), ac));
  43. return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  44. };
  45. function md5_HH(a, b, c, d, x, s, ac) {
  46. a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_H(b, c, d), x), ac));
  47. return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  48. };
  49. function md5_II(a, b, c, d, x, s, ac) {
  50. a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_I(b, c, d), x), ac));
  51. return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  52. };
  53. function md5_ConvertToWordArray(string) {
  54. var lWordCount;
  55. var lMessageLength = string.length;
  56. var lNumberOfWords_temp1 = lMessageLength + 8;
  57. var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64;
  58. var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;
  59. var lWordArray = Array(lNumberOfWords - 1);
  60. var lBytePosition = 0;
  61. var lByteCount = 0;
  62. while (lByteCount < lMessageLength) {
  63. lWordCount = (lByteCount - (lByteCount % 4)) / 4;
  64. lBytePosition = (lByteCount % 4) * 8;
  65. lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
  66. lByteCount++;
  67. }
  68. lWordCount = (lByteCount - (lByteCount % 4)) / 4;
  69. lBytePosition = (lByteCount % 4) * 8;
  70. lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
  71. lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
  72. lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
  73. return lWordArray;
  74. };
  75. function md5_WordToHex(lValue) {
  76. var WordToHexValue = "",
  77. WordToHexValue_temp = "",
  78. lByte, lCount;
  79. for (lCount = 0; lCount <= 3; lCount++) {
  80. lByte = (lValue >>> (lCount * 8)) & 255;
  81. WordToHexValue_temp = "0" + lByte.toString(16);
  82. WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2);
  83. }
  84. return WordToHexValue;
  85. };
  86. function md5_Utf8Encode(string) {
  87. string = string.replace(/\r\n/g, "\n");
  88. var utftext = "";
  89. for (var n = 0; n < string.length; n++) {
  90. var c = string.charCodeAt(n);
  91. if (c < 128) {
  92. utftext += String.fromCharCode(c);
  93. } else if ((c > 127) && (c < 2048)) {
  94. utftext += String.fromCharCode((c >> 6) | 192);
  95. utftext += String.fromCharCode((c & 63) | 128);
  96. } else {
  97. utftext += String.fromCharCode((c >> 12) | 224);
  98. utftext += String.fromCharCode(((c >> 6) & 63) | 128);
  99. utftext += String.fromCharCode((c & 63) | 128);
  100. }
  101. }
  102. return utftext;
  103. };
  104. var x = Array();
  105. var k, AA, BB, CC, DD, a, b, c, d;
  106. var S11 = 7,
  107. S12 = 12,
  108. S13 = 17,
  109. S14 = 22;
  110. var S21 = 5,
  111. S22 = 9,
  112. S23 = 14,
  113. S24 = 20;
  114. var S31 = 4,
  115. S32 = 11,
  116. S33 = 16,
  117. S34 = 23;
  118. var S41 = 6,
  119. S42 = 10,
  120. S43 = 15,
  121. S44 = 21;
  122. string = md5_Utf8Encode(string);
  123. x = md5_ConvertToWordArray(string);
  124. a = 0x67452301;
  125. b = 0xEFCDAB89;
  126. c = 0x98BADCFE;
  127. d = 0x10325476;
  128. for (k = 0; k < x.length; k += 16) {
  129. AA = a;
  130. BB = b;
  131. CC = c;
  132. DD = d;
  133. a = md5_FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);
  134. d = md5_FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);
  135. c = md5_FF(c, d, a, b, x[k + 2], S13, 0x242070DB);
  136. b = md5_FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);
  137. a = md5_FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);
  138. d = md5_FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);
  139. c = md5_FF(c, d, a, b, x[k + 6], S13, 0xA8304613);
  140. b = md5_FF(b, c, d, a, x[k + 7], S14, 0xFD469501);
  141. a = md5_FF(a, b, c, d, x[k + 8], S11, 0x698098D8);
  142. d = md5_FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);
  143. c = md5_FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);
  144. b = md5_FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);
  145. a = md5_FF(a, b, c, d, x[k + 12], S11, 0x6B901122);
  146. d = md5_FF(d, a, b, c, x[k + 13], S12, 0xFD987193);
  147. c = md5_FF(c, d, a, b, x[k + 14], S13, 0xA679438E);
  148. b = md5_FF(b, c, d, a, x[k + 15], S14, 0x49B40821);
  149. a = md5_GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);
  150. d = md5_GG(d, a, b, c, x[k + 6], S22, 0xC040B340);
  151. c = md5_GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);
  152. b = md5_GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);
  153. a = md5_GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);
  154. d = md5_GG(d, a, b, c, x[k + 10], S22, 0x2441453);
  155. c = md5_GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);
  156. b = md5_GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);
  157. a = md5_GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);
  158. d = md5_GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);
  159. c = md5_GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);
  160. b = md5_GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);
  161. a = md5_GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);
  162. d = md5_GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);
  163. c = md5_GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);
  164. b = md5_GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);
  165. a = md5_HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);
  166. d = md5_HH(d, a, b, c, x[k + 8], S32, 0x8771F681);
  167. c = md5_HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);
  168. b = md5_HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);
  169. a = md5_HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);
  170. d = md5_HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);
  171. c = md5_HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);
  172. b = md5_HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);
  173. a = md5_HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);
  174. d = md5_HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);
  175. c = md5_HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);
  176. b = md5_HH(b, c, d, a, x[k + 6], S34, 0x4881D05);
  177. a = md5_HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);
  178. d = md5_HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);
  179. c = md5_HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);
  180. b = md5_HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);
  181. a = md5_II(a, b, c, d, x[k + 0], S41, 0xF4292244);
  182. d = md5_II(d, a, b, c, x[k + 7], S42, 0x432AFF97);
  183. c = md5_II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);
  184. b = md5_II(b, c, d, a, x[k + 5], S44, 0xFC93A039);
  185. a = md5_II(a, b, c, d, x[k + 12], S41, 0x655B59C3);
  186. d = md5_II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);
  187. c = md5_II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);
  188. b = md5_II(b, c, d, a, x[k + 1], S44, 0x85845DD1);
  189. a = md5_II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);
  190. d = md5_II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);
  191. c = md5_II(c, d, a, b, x[k + 6], S43, 0xA3014314);
  192. b = md5_II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);
  193. a = md5_II(a, b, c, d, x[k + 4], S41, 0xF7537E82);
  194. d = md5_II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);
  195. c = md5_II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);
  196. b = md5_II(b, c, d, a, x[k + 9], S44, 0xEB86D391);
  197. a = md5_AddUnsigned(a, AA);
  198. b = md5_AddUnsigned(b, BB);
  199. c = md5_AddUnsigned(c, CC);
  200. d = md5_AddUnsigned(d, DD);
  201. }
  202. return (md5_WordToHex(a) + md5_WordToHex(b) + md5_WordToHex(c) + md5_WordToHex(d)).toLowerCase();
  203. }