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来自 , 2021-01-24, 写在 JavaScript, 查看 153 次.
URL http://www.code666.cn/view/86a1793f
  1. <!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
  2. <html>
  3. <head>
  4. <meta http-equiv="content-type" content="text/html; charset=gb2312">
  5. <title>js实现md5加密</title>
  6. </head>
  7. <body style="padding-left:50px;">
  8. <input id=test value=webasp>
  9. <input type=button value=md5 onclick="alert(hex_md5(test.value))">
  10. <script>
  11. var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
  12. var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
  13. var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */
  14. /*
  15. * These are the functions you'll usually want to call
  16. * They take string arguments and return either hex or base-64 encoded strings
  17. */
  18. function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
  19. function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
  20. function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
  21. function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
  22. /* Backwards compatibility - same as hex_md5() */
  23. function calcMD5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
  24. /*
  25. * Perform a simple self-test to see if the VM is working
  26. */
  27. function md5_vm_test()
  28. {
  29. return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
  30. }
  31. /*
  32. * Calculate the MD5 of an array of little-endian words, and a bit length
  33. */
  34. function core_md5(x, len)
  35. {
  36. /* append padding */
  37. x[len >> 5] |= 0x80 << ((len) % 32);
  38. x[(((len + 64) >>> 9) << 4) + 14] = len;
  39. var a = 1732584193;
  40. var b = -271733879;
  41. var c = -1732584194;
  42. var d = 271733878;
  43. for(var i = 0; i < x.length; i += 16)
  44. {
  45. var olda = a;
  46. var oldb = b;
  47. var oldc = c;
  48. var oldd = d;
  49. a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
  50. d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
  51. c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
  52. b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
  53. a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
  54. d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
  55. c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
  56. b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
  57. a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
  58. d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
  59. c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
  60. b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
  61. a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
  62. d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
  63. c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
  64. b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
  65. a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
  66. d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
  67. c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
  68. b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
  69. a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
  70. d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
  71. c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
  72. b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
  73. a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
  74. d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
  75. c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
  76. b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
  77. a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
  78. d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
  79. c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
  80. b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
  81. a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
  82. d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
  83. c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
  84. b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
  85. a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
  86. d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
  87. c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
  88. b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
  89. a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
  90. d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
  91. c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
  92. b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
  93. a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
  94. d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
  95. c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
  96. b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
  97. a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
  98. d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
  99. c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
  100. b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
  101. a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
  102. d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
  103. c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
  104. b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
  105. a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
  106. d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
  107. c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
  108. b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
  109. a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
  110. d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
  111. c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
  112. b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
  113. a = safe_add(a, olda);
  114. b = safe_add(b, oldb);
  115. c = safe_add(c, oldc);
  116. d = safe_add(d, oldd);
  117. }
  118. return Array(a, b, c, d);
  119. }
  120. /*
  121. * These functions implement the four basic operations the algorithm uses.
  122. */
  123. function md5_cmn(q, a, b, x, s, t)
  124. {
  125. return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
  126. }
  127. function md5_ff(a, b, c, d, x, s, t)
  128. {
  129. return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
  130. }
  131. function md5_gg(a, b, c, d, x, s, t)
  132. {
  133. return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
  134. }
  135. function md5_hh(a, b, c, d, x, s, t)
  136. {
  137. return md5_cmn(b ^ c ^ d, a, b, x, s, t);
  138. }
  139. function md5_ii(a, b, c, d, x, s, t)
  140. {
  141. return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
  142. }
  143. /*
  144. * Calculate the HMAC-MD5, of a key and some data
  145. */
  146. function core_hmac_md5(key, data)
  147. {
  148. var bkey = str2binl(key);
  149. if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
  150. var ipad = Array(16), opad = Array(16);
  151. for(var i = 0; i < 16; i++)
  152. {
  153. ipad[i] = bkey[i] ^ 0x36363636;
  154. opad[i] = bkey[i] ^ 0x5C5C5C5C;
  155. }
  156. var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
  157. return core_md5(opad.concat(hash), 512 + 128);
  158. }
  159. /*
  160. * Add integers, wrapping at 2^32. This uses 16-bit operations internally
  161. * to work around bugs in some JS interpreters.
  162. */
  163. function safe_add(x, y)
  164. {
  165. var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  166. var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  167. return (msw << 16) | (lsw & 0xFFFF);
  168. }
  169. /*
  170. * Bitwise rotate a 32-bit number to the left.
  171. */
  172. function bit_rol(num, cnt)
  173. {
  174. return (num << cnt) | (num >>> (32 - cnt));
  175. }
  176. /*
  177. * Convert a string to an array of little-endian words
  178. * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
  179. */
  180. function str2binl(str)
  181. {
  182. var bin = Array();
  183. var mask = (1 << chrsz) - 1;
  184. for(var i = 0; i < str.length * chrsz; i += chrsz)
  185. bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
  186. return bin;
  187. }
  188. /*
  189. * Convert an array of little-endian words to a hex string.
  190. */
  191. function binl2hex(binarray)
  192. {
  193. var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  194. var str = "";
  195. for(var i = 0; i < binarray.length * 4; i++)
  196. {
  197. str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
  198. hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
  199. }
  200. return str;
  201. }
  202. /*
  203. * Convert an array of little-endian words to a base-64 string
  204. */
  205. function binl2b64(binarray)
  206. {
  207. var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  208. var str = "";
  209. for(var i = 0; i < binarray.length * 4; i += 3)
  210. {
  211. var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
  212. | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
  213. | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
  214. for(var j = 0; j < 4; j++)
  215. {
  216. if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
  217. else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
  218. }
  219. }
  220. return str;
  221. }
  222. </script>
  223. </body>
  224. </html>
  225.  

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