md5.js 6.5 KB

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  1. var hexcase = 0;
  2. var b64pad = "";
  3. var chrsz = 8;
  4. function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
  5. function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
  6. function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
  7. function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
  8. function calcMD5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
  9. function md5_vm_test()
  10. {
  11. return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
  12. }
  13. function core_md5(x, len)
  14. {
  15. x[len >> 5] |= 0x80 << ((len) % 32);
  16. x[(((len + 64) >>> 9) << 4) + 14] = len;
  17. var a = 1732584193;
  18. var b = -271733879;
  19. var c = -1732584194;
  20. var d = 271733878;
  21. for(var i = 0; i < x.length; i += 16)
  22. {
  23. var olda = a;
  24. var oldb = b;
  25. var oldc = c;
  26. var oldd = d;
  27. a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
  28. d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
  29. c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
  30. b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
  31. a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
  32. d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
  33. c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
  34. b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
  35. a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
  36. d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
  37. c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
  38. b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
  39. a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
  40. d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
  41. c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
  42. b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
  43. a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
  44. d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
  45. c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
  46. b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
  47. a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
  48. d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
  49. c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
  50. b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
  51. a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
  52. d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
  53. c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
  54. b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
  55. a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
  56. d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
  57. c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
  58. b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
  59. a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
  60. d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
  61. c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
  62. b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
  63. a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
  64. d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
  65. c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
  66. b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
  67. a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
  68. d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
  69. c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
  70. b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
  71. a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
  72. d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
  73. c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
  74. b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
  75. a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
  76. d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
  77. c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
  78. b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
  79. a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
  80. d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
  81. c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
  82. b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
  83. a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
  84. d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
  85. c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
  86. b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
  87. a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
  88. d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
  89. c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
  90. b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
  91. a = safe_add(a, olda);
  92. b = safe_add(b, oldb);
  93. c = safe_add(c, oldc);
  94. d = safe_add(d, oldd);
  95. }
  96. return Array(a, b, c, d);
  97. }
  98. function md5_cmn(q, a, b, x, s, t)
  99. {
  100. return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
  101. }
  102. function md5_ff(a, b, c, d, x, s, t)
  103. {
  104. return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
  105. }
  106. function md5_gg(a, b, c, d, x, s, t)
  107. {
  108. return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
  109. }
  110. function md5_hh(a, b, c, d, x, s, t)
  111. {
  112. return md5_cmn(b ^ c ^ d, a, b, x, s, t);
  113. }
  114. function md5_ii(a, b, c, d, x, s, t)
  115. {
  116. return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
  117. }
  118. function core_hmac_md5(key, data)
  119. {
  120. var bkey = str2binl(key);
  121. if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
  122. var ipad = Array(16), opad = Array(16);
  123. for(var i = 0; i < 16; i++)
  124. {
  125. ipad[i] = bkey[i] ^ 0x36363636;
  126. opad[i] = bkey[i] ^ 0x5C5C5C5C;
  127. }
  128. var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
  129. return core_md5(opad.concat(hash), 512 + 128);
  130. }
  131. function safe_add(x, y)
  132. {
  133. var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  134. var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  135. return (msw << 16) | (lsw & 0xFFFF);
  136. }
  137. function bit_rol(num, cnt)
  138. {
  139. return (num << cnt) | (num >>> (32 - cnt));
  140. }
  141. function str2binl(str)
  142. {
  143. var bin = Array();
  144. var mask = (1 << chrsz) - 1;
  145. for(var i = 0; i < str.length * chrsz; i += chrsz)
  146. bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
  147. return bin;
  148. }
  149. function binl2hex(binarray)
  150. {
  151. var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  152. var str = "";
  153. for(var i = 0; i < binarray.length * 4; i++)
  154. {
  155. str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
  156. hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
  157. }
  158. return str;
  159. }
  160. function binl2b64(binarray)
  161. {
  162. var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  163. var str = "";
  164. for(var i = 0; i < binarray.length * 4; i += 3)
  165. {
  166. var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
  167. | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
  168. | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
  169. for(var j = 0; j < 4; j++)
  170. {
  171. if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
  172. else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
  173. }
  174. }
  175. return str;
  176. }