小程序md5加密

function md5(string) {
  var x = Array();
  var k, AA, BB, CC, DD, a, b, c, d;
  var S11 = , S12 = , S13 = , S14 = ;
  var S21 = , S22 = , S23 = , S24 = ;
  var S31 = , S32 = , S33 = , S34 = ;
  var S41 = , S42 = , S43 = , S44 = ;
  string = Utf8Encode(string);
  x = ConvertToWordArray(string);
  a = 0x67452301;
  b = 0xEFCDAB89;
  c = 0x98BADCFE;
  d = 0x10325476;
  for (k = ; k < x.length; k += ) {
    AA = a;
    BB = b;
    CC = c;
    DD = d;
    a = FF(a, b, c, d, x[k + ], S11, 0xD76AA478);
    d = FF(d, a, b, c, x[k + ], S12, 0xE8C7B756);
    c = FF(c, d, a, b, x[k + ], S13, 0x242070DB);
    b = FF(b, c, d, a, x[k + ], S14, 0xC1BDCEEE);
    a = FF(a, b, c, d, x[k + ], S11, 0xF57C0FAF);
    d = FF(d, a, b, c, x[k + ], S12, 0x4787C62A);
    c = FF(c, d, a, b, x[k + ], S13, 0xA8304613);
    b = FF(b, c, d, a, x[k + ], S14, 0xFD469501);
    a = FF(a, b, c, d, x[k + ], S11, 0x698098D8);
    d = FF(d, a, b, c, x[k + ], S12, 0x8B44F7AF);
    c = FF(c, d, a, b, x[k + ], S13, 0xFFFF5BB1);
    b = FF(b, c, d, a, x[k + ], S14, 0x895CD7BE);
    a = FF(a, b, c, d, x[k + ], S11, 0x6B901122);
    d = FF(d, a, b, c, x[k + ], S12, 0xFD987193);
    c = FF(c, d, a, b, x[k + ], S13, 0xA679438E);
    b = FF(b, c, d, a, x[k + ], S14, 0x49B40821);
    a = GG(a, b, c, d, x[k + ], S21, 0xF61E2562);
    d = GG(d, a, b, c, x[k + ], S22, 0xC040B340);
    c = GG(c, d, a, b, x[k + ], S23, 0x265E5A51);
    b = GG(b, c, d, a, x[k + ], S24, 0xE9B6C7AA);
    a = GG(a, b, c, d, x[k + ], S21, 0xD62F105D);
    d = GG(d, a, b, c, x[k + ], S22, 0x2441453);
    c = GG(c, d, a, b, x[k + ], S23, 0xD8A1E681);
    b = GG(b, c, d, a, x[k + ], S24, 0xE7D3FBC8);
    a = GG(a, b, c, d, x[k + ], S21, 0x21E1CDE6);
    d = GG(d, a, b, c, x[k + ], S22, 0xC33707D6);
    c = GG(c, d, a, b, x[k + ], S23, 0xF4D50D87);
    b = GG(b, c, d, a, x[k + ], S24, 0x455A14ED);
    a = GG(a, b, c, d, x[k + ], S21, 0xA9E3E905);
    d = GG(d, a, b, c, x[k + ], S22, 0xFCEFA3F8);
    c = GG(c, d, a, b, x[k + ], S23, 0x676F02D9);
    b = GG(b, c, d, a, x[k + ], S24, 0x8D2A4C8A);
    a = HH(a, b, c, d, x[k + ], S31, 0xFFFA3942);
    d = HH(d, a, b, c, x[k + ], S32, 0x8771F681);
    c = HH(c, d, a, b, x[k + ], S33, 0x6D9D6122);
    b = HH(b, c, d, a, x[k + ], S34, 0xFDE5380C);
    a = HH(a, b, c, d, x[k + ], S31, 0xA4BEEA44);
    d = HH(d, a, b, c, x[k + ], S32, 0x4BDECFA9);
    c = HH(c, d, a, b, x[k + ], S33, 0xF6BB4B60);
    b = HH(b, c, d, a, x[k + ], S34, 0xBEBFBC70);
    a = HH(a, b, c, d, x[k + ], S31, 0x289B7EC6);
    d = HH(d, a, b, c, x[k + ], S32, 0xEAA127FA);
    c = HH(c, d, a, b, x[k + ], S33, 0xD4EF3085);
    b = HH(b, c, d, a, x[k + ], S34, 0x4881D05);
    a = HH(a, b, c, d, x[k + ], S31, 0xD9D4D039);
    d = HH(d, a, b, c, x[k + ], S32, 0xE6DB99E5);
    c = HH(c, d, a, b, x[k + ], S33, 0x1FA27CF8);
    b = HH(b, c, d, a, x[k + ], S34, 0xC4AC5665);
    a = II(a, b, c, d, x[k + ], S41, 0xF4292244);
    d = II(d, a, b, c, x[k + ], S42, 0x432AFF97);
    c = II(c, d, a, b, x[k + ], S43, 0xAB9423A7);
    b = II(b, c, d, a, x[k + ], S44, 0xFC93A039);
    a = II(a, b, c, d, x[k + ], S41, 0x655B59C3);
    d = II(d, a, b, c, x[k + ], S42, 0x8F0CCC92);
    c = II(c, d, a, b, x[k + ], S43, 0xFFEFF47D);
    b = II(b, c, d, a, x[k + ], S44, 0x85845DD1);
    a = II(a, b, c, d, x[k + ], S41, 0x6FA87E4F);
    d = II(d, a, b, c, x[k + ], S42, 0xFE2CE6E0);
    c = II(c, d, a, b, x[k + ], S43, 0xA3014314);
    b = II(b, c, d, a, x[k + ], S44, 0x4E0811A1);
    a = II(a, b, c, d, x[k + ], S41, 0xF7537E82);
    d = II(d, a, b, c, x[k + ], S42, 0xBD3AF235);
    c = II(c, d, a, b, x[k + ], S43, 0x2AD7D2BB);
    b = II(b, c, d, a, x[k + ], S44, 0xEB86D391);
    a = AddUnsigned(a, AA);
    b = AddUnsigned(b, BB);
    c = AddUnsigned(c, CC);
    d = AddUnsigned(d, DD);
  }
  var temp = WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d);
  return temp.toUpperCase();
}
function RotateLeft(lValue, iShiftBits) {
  return (lValue << iShiftBits) | (lValue >>> ( - iShiftBits));
}
function AddUnsigned(lX, lY) {
  var lX4, lY4, lX8, lY8, lResult;
  lX8 = (lX & 0x80000000);
  lY8 = (lY & 0x80000000);
  lX4 = (lX & 0x40000000);
  lY4 = (lY & 0x40000000);
  lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
  if (lX4 & lY4) {
    return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
  }
  if (lX4 | lY4) {
    if (lResult & 0x40000000) {
      return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
    } else {
      return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
    }
  } else {
    return (lResult ^ lX8 ^ lY8);
  }
}
function F(x, y, z) {
  return (x & y) | ((~x) & z);
}
function G(x, y, z) {
  return (x & z) | (y & (~z));
}
function H(x, y, z) {
  return (x ^ y ^ z);
}
function I(x, y, z) {
  return (y ^ (x | (~z)));
}
function FF(a, b, c, d, x, s, ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
}
function GG(a, b, c, d, x, s, ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
}
function HH(a, b, c, d, x, s, ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
}
function II(a, b, c, d, x, s, ac) {
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
  return AddUnsigned(RotateLeft(a, s), b);
}
function ConvertToWordArray(string) {
  var lWordCount;
  var lMessageLength = string.length;
  var lNumberOfWords_temp1 = lMessageLength + ;
  var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % )) / ;
  var lNumberOfWords = (lNumberOfWords_temp2 + ) * ;
  var lWordArray = Array(lNumberOfWords - );
  var lBytePosition = ;
  var lByteCount = ;
  while (lByteCount < lMessageLength) {
    lWordCount = (lByteCount - (lByteCount % )) / ;
    lBytePosition = (lByteCount % ) * ;
    lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
    lByteCount++;
  }
  lWordCount = (lByteCount - (lByteCount % )) / ;
  lBytePosition = (lByteCount % ) * ;
  lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
  lWordArray[lNumberOfWords - ] = lMessageLength << ;
  lWordArray[lNumberOfWords - ] = lMessageLength >>> ;
  return lWordArray;
}
function WordToHex(lValue) {
  var WordToHexValue = "", WordToHexValue_temp = "", lByte, lCount;
  for (lCount = ; lCount <= ; lCount++) {
    lByte = (lValue >>> (lCount * )) & ;
    WordToHexValue_temp = "" + lByte.toString();
    WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - , );
  }
  return WordToHexValue;
}
function Utf8Encode(string) {
  var utftext = "";
  for (var n = ; n < string.length; n++) {
    var c = string.charCodeAt(n);
    if (c < ) {
      utftext += String.fromCharCode(c);
    } else if ((c > ) && (c < )) {
      utftext += String.fromCharCode((c >> ) | );
      utftext += String.fromCharCode((c & ) | );
    } else {
      utftext += String.fromCharCode((c >> ) | );
      utftext += String.fromCharCode(((c >> ) & ) | );
      utftext += String.fromCharCode((c & ) | );
    }
  }
  return utftext;
}
module.exports = {
  md5: md5
} 

路径图  在utils文件下新建一个md5.js

引用方式

var md5 = require('../../utils/md5.js');

md5.md5(string)