MD5.js 6.0 KB

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  1. (function () {
  2. var C = typeof window === 'undefined' ? require('./Crypto').Crypto : window.Crypto;
  3. // Shortcuts
  4. var util = C.util;
  5. var charenc = C.charenc;
  6. var UTF8 = charenc.UTF8;
  7. var Binary = charenc.Binary; // Public API
  8. var MD5 = (C.MD5 = function (message, options) {
  9. var digestbytes = util.wordsToBytes(MD5._md5(message));
  10. return options && options.asBytes ? digestbytes : options && options.asString ? Binary.bytesToString(digestbytes) : util.bytesToHex(digestbytes);
  11. });
  12. // The core
  13. MD5._md5 = function (message) {
  14. // Convert to byte array
  15. if (message.constructor == String) {
  16. message = UTF8.stringToBytes(message);
  17. }
  18. /* else, assume byte array already */
  19. var m = util.bytesToWords(message);
  20. var l = message.length * 8;
  21. var a = 1732584193;
  22. var b = -271733879;
  23. var c = -1732584194;
  24. var d = 271733878; // Swap endian
  25. for (var i = 0; i < m.length; i++) {
  26. m[i] = (((m[i] << 8) | (m[i] >>> 24)) & 16711935) | (((m[i] << 24) | (m[i] >>> 8)) & 4278255360);
  27. }
  28. // Padding
  29. m[l >>> 5] |= 128 << l % 32;
  30. m[(((l + 64) >>> 9) << 4) + 14] = l;
  31. // Method shortcuts
  32. var FF = MD5._ff;
  33. var GG = MD5._gg;
  34. var HH = MD5._hh;
  35. var II = MD5._ii;
  36. for (var i = 0; i < m.length; i += 16) {
  37. var aa = a;
  38. var bb = b;
  39. var cc = c;
  40. var dd = d;
  41. a = FF(a, b, c, d, m[i + 0], 7, -680876936);
  42. d = FF(d, a, b, c, m[i + 1], 12, -389564586);
  43. c = FF(c, d, a, b, m[i + 2], 17, 606105819);
  44. b = FF(b, c, d, a, m[i + 3], 22, -1044525330);
  45. a = FF(a, b, c, d, m[i + 4], 7, -176418897);
  46. d = FF(d, a, b, c, m[i + 5], 12, 1200080426);
  47. c = FF(c, d, a, b, m[i + 6], 17, -1473231341);
  48. b = FF(b, c, d, a, m[i + 7], 22, -45705983);
  49. a = FF(a, b, c, d, m[i + 8], 7, 1770035416);
  50. d = FF(d, a, b, c, m[i + 9], 12, -1958414417);
  51. c = FF(c, d, a, b, m[i + 10], 17, -42063);
  52. b = FF(b, c, d, a, m[i + 11], 22, -1990404162);
  53. a = FF(a, b, c, d, m[i + 12], 7, 1804603682);
  54. d = FF(d, a, b, c, m[i + 13], 12, -40341101);
  55. c = FF(c, d, a, b, m[i + 14], 17, -1502002290);
  56. b = FF(b, c, d, a, m[i + 15], 22, 1236535329);
  57. a = GG(a, b, c, d, m[i + 1], 5, -165796510);
  58. d = GG(d, a, b, c, m[i + 6], 9, -1069501632);
  59. c = GG(c, d, a, b, m[i + 11], 14, 643717713);
  60. b = GG(b, c, d, a, m[i + 0], 20, -373897302);
  61. a = GG(a, b, c, d, m[i + 5], 5, -701558691);
  62. d = GG(d, a, b, c, m[i + 10], 9, 38016083);
  63. c = GG(c, d, a, b, m[i + 15], 14, -660478335);
  64. b = GG(b, c, d, a, m[i + 4], 20, -405537848);
  65. a = GG(a, b, c, d, m[i + 9], 5, 568446438);
  66. d = GG(d, a, b, c, m[i + 14], 9, -1019803690);
  67. c = GG(c, d, a, b, m[i + 3], 14, -187363961);
  68. b = GG(b, c, d, a, m[i + 8], 20, 1163531501);
  69. a = GG(a, b, c, d, m[i + 13], 5, -1444681467);
  70. d = GG(d, a, b, c, m[i + 2], 9, -51403784);
  71. c = GG(c, d, a, b, m[i + 7], 14, 1735328473);
  72. b = GG(b, c, d, a, m[i + 12], 20, -1926607734);
  73. a = HH(a, b, c, d, m[i + 5], 4, -378558);
  74. d = HH(d, a, b, c, m[i + 8], 11, -2022574463);
  75. c = HH(c, d, a, b, m[i + 11], 16, 1839030562);
  76. b = HH(b, c, d, a, m[i + 14], 23, -35309556);
  77. a = HH(a, b, c, d, m[i + 1], 4, -1530992060);
  78. d = HH(d, a, b, c, m[i + 4], 11, 1272893353);
  79. c = HH(c, d, a, b, m[i + 7], 16, -155497632);
  80. b = HH(b, c, d, a, m[i + 10], 23, -1094730640);
  81. a = HH(a, b, c, d, m[i + 13], 4, 681279174);
  82. d = HH(d, a, b, c, m[i + 0], 11, -358537222);
  83. c = HH(c, d, a, b, m[i + 3], 16, -722521979);
  84. b = HH(b, c, d, a, m[i + 6], 23, 76029189);
  85. a = HH(a, b, c, d, m[i + 9], 4, -640364487);
  86. d = HH(d, a, b, c, m[i + 12], 11, -421815835);
  87. c = HH(c, d, a, b, m[i + 15], 16, 530742520);
  88. b = HH(b, c, d, a, m[i + 2], 23, -995338651);
  89. a = II(a, b, c, d, m[i + 0], 6, -198630844);
  90. d = II(d, a, b, c, m[i + 7], 10, 1126891415);
  91. c = II(c, d, a, b, m[i + 14], 15, -1416354905);
  92. b = II(b, c, d, a, m[i + 5], 21, -57434055);
  93. a = II(a, b, c, d, m[i + 12], 6, 1700485571);
  94. d = II(d, a, b, c, m[i + 3], 10, -1894986606);
  95. c = II(c, d, a, b, m[i + 10], 15, -1051523);
  96. b = II(b, c, d, a, m[i + 1], 21, -2054922799);
  97. a = II(a, b, c, d, m[i + 8], 6, 1873313359);
  98. d = II(d, a, b, c, m[i + 15], 10, -30611744);
  99. c = II(c, d, a, b, m[i + 6], 15, -1560198380);
  100. b = II(b, c, d, a, m[i + 13], 21, 1309151649);
  101. a = II(a, b, c, d, m[i + 4], 6, -145523070);
  102. d = II(d, a, b, c, m[i + 11], 10, -1120210379);
  103. c = II(c, d, a, b, m[i + 2], 15, 718787259);
  104. b = II(b, c, d, a, m[i + 9], 21, -343485551);
  105. a = (a + aa) >>> 0;
  106. b = (b + bb) >>> 0;
  107. c = (c + cc) >>> 0;
  108. d = (d + dd) >>> 0;
  109. }
  110. return util.endian([a, b, c, d]);
  111. };
  112. // Auxiliary functions
  113. MD5._ff = function (a, b, c, d, x, s, t) {
  114. var n = a + ((b & c) | (~b & d)) + (x >>> 0) + t;
  115. return ((n << s) | (n >>> (32 - s))) + b;
  116. };
  117. MD5._gg = function (a, b, c, d, x, s, t) {
  118. var n = a + ((b & d) | (c & ~d)) + (x >>> 0) + t;
  119. return ((n << s) | (n >>> (32 - s))) + b;
  120. };
  121. MD5._hh = function (a, b, c, d, x, s, t) {
  122. var n = a + (b ^ c ^ d) + (x >>> 0) + t;
  123. return ((n << s) | (n >>> (32 - s))) + b;
  124. };
  125. MD5._ii = function (a, b, c, d, x, s, t) {
  126. var n = a + (c ^ (b | ~d)) + (x >>> 0) + t;
  127. return ((n << s) | (n >>> (32 - s))) + b;
  128. };
  129. // Package private blocksize
  130. MD5._blocksize = 16;
  131. MD5._digestsize = 16;
  132. })();