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myMd5

计算字符串的md5值，返回4段md5字符串

此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.gf.qytechs.cn/scripts/452085/1098266/myMd5.js 

  1. //改自https://blog.csdn.net/weixin_41392105/article/details/107081339
  2. function myMd5(string) {
  3.     function md5_RotateLeft(lValue, iShiftBits) {
  4.         return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
  5.     }
  6.  
  7.     function md5_AddUnsigned(lX, lY) {
  8.         var lX4, lY4, lX8, lY8, lResult;
  9.         lX8 = (lX & 0x80000000);
  10.         lY8 = (lY & 0x80000000);
  11.         lX4 = (lX & 0x40000000);
  12.         lY4 = (lY & 0x40000000);
  13.         lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
  14.         if (lX4 & lY4) {
  15.             return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
  16.         }
  17.         if (lX4 | lY4) {
  18.             if (lResult & 0x40000000) {
  19.                 return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
  20.             } else {
  21.                 return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
  22.             }
  23.         } else {
  24.             return (lResult ^ lX8 ^ lY8);
  25.         }
  26.     }
  27.  
  28.     function md5_F(x, y, z) {
  29.         return (x & y) | ((~x) & z);
  30.     }
  31.  
  32.     function md5_G(x, y, z) {
  33.         return (x & z) | (y & (~z));
  34.     }
  35.  
  36.     function md5_H(x, y, z) {
  37.         return (x ^ y ^ z);
  38.     }
  39.  
  40.     function md5_I(x, y, z) {
  41.         return (y ^ (x | (~z)));
  42.     }
  43.  
  44.     function md5_FF(a, b, c, d, x, s, ac) {
  45.         a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_F(b, c, d), x), ac));
  46.         return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  47.     }
  48.  
  49.     function md5_GG(a, b, c, d, x, s, ac) {
  50.         a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_G(b, c, d), x), ac));
  51.         return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  52.     }
  53.  
  54.     function md5_HH(a, b, c, d, x, s, ac) {
  55.         a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_H(b, c, d), x), ac));
  56.         return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  57.     }
  58.  
  59.     function md5_II(a, b, c, d, x, s, ac) {
  60.         a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_I(b, c, d), x), ac));
  61.         return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  62.     }
  63.  
  64.     function md5_ConvertToWordArray(string) {
  65.         var lWordCount;
  66.         var lMessageLength = string.length;
  67.         var lNumberOfWords_temp1 = lMessageLength + 8;
  68.         var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64;
  69.         var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;
  70.         var lWordArray = Array(lNumberOfWords - 1);
  71.         var lBytePosition = 0;
  72.         var lByteCount = 0;
  73.         while (lByteCount < lMessageLength) {
  74.             lWordCount = (lByteCount - (lByteCount % 4)) / 4;
  75.             lBytePosition = (lByteCount % 4) * 8;
  76.             lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
  77.             lByteCount++;
  78.         }
  79.         lWordCount = (lByteCount - (lByteCount % 4)) / 4;
  80.         lBytePosition = (lByteCount % 4) * 8;
  81.         lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
  82.         lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
  83.         lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
  84.         return lWordArray;
  85.     }
  86.  
  87.     function md5_WordToHex(lValue) {
  88.         var WordToHexValue = "", WordToHexValue_temp = "", lByte, lCount;
  89.         for (lCount = 0; lCount <= 3; lCount++) {
  90.             lByte = (lValue >>> (lCount * 8)) & 255;
  91.             WordToHexValue_temp = "0" + lByte.toString(16);
  92.             WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2);
  93.         }
  94.         return WordToHexValue;
  95.     }
  96.  
  97.     function md5_Utf8Encode(string) {
  98.         string = string.replace(/\r\n/g, "\n");
  99.         var utftext = "";
  100.         for (var n = 0; n < string.length; n++) {
  101.             var c = string.charCodeAt(n);
  102.             if (c < 128) {
  103.                 utftext += String.fromCharCode(c);
  104.             } else if ((c > 127) && (c < 2048)) {
  105.                 utftext += String.fromCharCode((c >> 6) | 192);
  106.                 utftext += String.fromCharCode((c & 63) | 128);
  107.             } else {
  108.                 utftext += String.fromCharCode((c >> 12) | 224);
  109.                 utftext += String.fromCharCode(((c >> 6) & 63) | 128);
  110.                 utftext += String.fromCharCode((c & 63) | 128);
  111.             }
  112.         }
  113.         return utftext;
  114.     }
  115.     var x = Array();
  116.     var k, AA, BB, CC, DD, a, b, c, d;
  117.     var S11 = 7, S12 = 12, S13 = 17, S14 = 22;
  118.     var S21 = 5, S22 = 9, S23 = 14, S24 = 20;
  119.     var S31 = 4, S32 = 11, S33 = 16, S34 = 23;
  120.     var S41 = 6, S42 = 10, S43 = 15, S44 = 21;
  121.     string = md5_Utf8Encode(string);
  122.     x = md5_ConvertToWordArray(string);
  123.     a = 0x67452301;
  124.     b = 0xEFCDAB89;
  125.     c = 0x98BADCFE;
  126.     d = 0x10325476;
  127.     for (k = 0; k < x.length; k += 16) {
  128.         AA = a;
  129.         BB = b;
  130.         CC = c;
  131.         DD = d;
  132.         a = md5_FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);
  133.         d = md5_FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);
  134.         c = md5_FF(c, d, a, b, x[k + 2], S13, 0x242070DB);
  135.         b = md5_FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);
  136.         a = md5_FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);
  137.         d = md5_FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);
  138.         c = md5_FF(c, d, a, b, x[k + 6], S13, 0xA8304613);
  139.         b = md5_FF(b, c, d, a, x[k + 7], S14, 0xFD469501);
  140.         a = md5_FF(a, b, c, d, x[k + 8], S11, 0x698098D8);
  141.         d = md5_FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);
  142.         c = md5_FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);
  143.         b = md5_FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);
  144.         a = md5_FF(a, b, c, d, x[k + 12], S11, 0x6B901122);
  145.         d = md5_FF(d, a, b, c, x[k + 13], S12, 0xFD987193);
  146.         c = md5_FF(c, d, a, b, x[k + 14], S13, 0xA679438E);
  147.         b = md5_FF(b, c, d, a, x[k + 15], S14, 0x49B40821);
  148.         a = md5_GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);
  149.         d = md5_GG(d, a, b, c, x[k + 6], S22, 0xC040B340);
  150.         c = md5_GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);
  151.         b = md5_GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);
  152.         a = md5_GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);
  153.         d = md5_GG(d, a, b, c, x[k + 10], S22, 0x2441453);
  154.         c = md5_GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);
  155.         b = md5_GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);
  156.         a = md5_GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);
  157.         d = md5_GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);
  158.         c = md5_GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);
  159.         b = md5_GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);
  160.         a = md5_GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);
  161.         d = md5_GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);
  162.         c = md5_GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);
  163.         b = md5_GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);
  164.         a = md5_HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);
  165.         d = md5_HH(d, a, b, c, x[k + 8], S32, 0x8771F681);
  166.         c = md5_HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);
  167.         b = md5_HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);
  168.         a = md5_HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);
  169.         d = md5_HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);
  170.         c = md5_HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);
  171.         b = md5_HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);
  172.         a = md5_HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);
  173.         d = md5_HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);
  174.         c = md5_HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);
  175.         b = md5_HH(b, c, d, a, x[k + 6], S34, 0x4881D05);
  176.         a = md5_HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);
  177.         d = md5_HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);
  178.         c = md5_HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);
  179.         b = md5_HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);
  180.         a = md5_II(a, b, c, d, x[k + 0], S41, 0xF4292244);
  181.         d = md5_II(d, a, b, c, x[k + 7], S42, 0x432AFF97);
  182.         c = md5_II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);
  183.         b = md5_II(b, c, d, a, x[k + 5], S44, 0xFC93A039);
  184.         a = md5_II(a, b, c, d, x[k + 12], S41, 0x655B59C3);
  185.         d = md5_II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);
  186.         c = md5_II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);
  187.         b = md5_II(b, c, d, a, x[k + 1], S44, 0x85845DD1);
  188.         a = md5_II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);
  189.         d = md5_II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);
  190.         c = md5_II(c, d, a, b, x[k + 6], S43, 0xA3014314);
  191.         b = md5_II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);
  192.         a = md5_II(a, b, c, d, x[k + 4], S41, 0xF7537E82);
  193.         d = md5_II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);
  194.         c = md5_II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);
  195.         b = md5_II(b, c, d, a, x[k + 9], S44, 0xEB86D391);
  196.         a = md5_AddUnsigned(a, AA);
  197.         b = md5_AddUnsigned(b, BB);
  198.         c = md5_AddUnsigned(c, CC);
  199.         d = md5_AddUnsigned(d, DD);
  200.     }
  201.     return Array(md5_WordToHex(a),md5_WordToHex(b),md5_WordToHex(c),md5_WordToHex(d));
  202. }

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