js进行MD5加密（含中文），与后台JAVA加密之后结果不同（解决）

开发小程序过程中与后台进行接口沟通，前期接口经过MD5加密和AES加密之后，后台进行解密。

今天出现一种情况，我前台加密之后的md5串与后台加密不同，后台发现可能是带用中文的原因，

这是加密之前的串：

address=北京市朝阳区日坛北街33号C口&defult=1&phonenum=17600000693&userId=12&userName=小胖龙&key=E02353AF68EBE70D507EB8BF362460B5
之后换了一个MD5.js解决，具体原理好像是需要将中文先转为utf-8。

直接贴文件

function md5(string) {

  function md5_RotateLeft(lValue, iShiftBits) {

    return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));

  }

  function md5_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 md5_F(x, y, z) {

    return (x & y) | ((~x) & z);

  }

  function md5_G(x, y, z) {

    return (x & z) | (y & (~z));

  }

  function md5_H(x, y, z) {

    return (x ^ y ^ z);

  }

  function md5_I(x, y, z) {

    return (y ^ (x | (~z)));

  }

  function md5_FF(a, b, c, d, x, s, ac) {

    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_F(b, c, d), x), ac));

    return md5_AddUnsigned(md5_RotateLeft(a, s), b);

  };

  function md5_GG(a, b, c, d, x, s, ac) {

    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_G(b, c, d), x), ac));

    return md5_AddUnsigned(md5_RotateLeft(a, s), b);

  };

  function md5_HH(a, b, c, d, x, s, ac) {

    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_H(b, c, d), x), ac));

    return md5_AddUnsigned(md5_RotateLeft(a, s), b);

  };

  function md5_II(a, b, c, d, x, s, ac) {

    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_I(b, c, d), x), ac));

    return md5_AddUnsigned(md5_RotateLeft(a, s), b);

  };

  function md5_ConvertToWordArray(string) {

    var lWordCount;

    var lMessageLength = string.length;

    var lNumberOfWords_temp1 = lMessageLength + 8;

    var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64;

    var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;

    var lWordArray = Array(lNumberOfWords - 1);

    var lBytePosition = 0;

    var lByteCount = 0;

    while (lByteCount < lMessageLength) {

      lWordCount = (lByteCount - (lByteCount % 4)) / 4;

      lBytePosition = (lByteCount % 4) * 8;

      lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));

      lByteCount++;

    }

    lWordCount = (lByteCount - (lByteCount % 4)) / 4;

    lBytePosition = (lByteCount % 4) * 8;

    lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);

    lWordArray[lNumberOfWords - 2] = lMessageLength << 3;

    lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;

    return lWordArray;

  };

  function md5_WordToHex(lValue) {

    var WordToHexValue = "", WordToHexValue_temp = "", lByte, lCount;

    for (lCount = 0; lCount <= 3; lCount++) {

      lByte = (lValue >>> (lCount * 8)) & 255;

      WordToHexValue_temp = "0" + lByte.toString(16);

      WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2);

    }

    return WordToHexValue;

  };

  function md5_Utf8Encode(string) {

    string = string.replace(/\r\n/g, "\n");

    var utftext = "";

    for (var n = 0; n < string.length; n++) {

      var c = string.charCodeAt(n);

      if (c < 128) {

        utftext += String.fromCharCode(c);

      } else if ((c > 127) && (c < 2048)) {

        utftext += String.fromCharCode((c >> 6) | 192);

        utftext += String.fromCharCode((c & 63) | 128);

      } else {

        utftext += String.fromCharCode((c >> 12) | 224);

        utftext += String.fromCharCode(((c >> 6) & 63) | 128);

        utftext += String.fromCharCode((c & 63) | 128);

      }

    }

    return utftext;

  };

  var x = Array();

  var k, AA, BB, CC, DD, a, b, c, d;

  var S11 = 7, S12 = 12, S13 = 17, S14 = 22;

  var S21 = 5, S22 = 9, S23 = 14, S24 = 20;

  var S31 = 4, S32 = 11, S33 = 16, S34 = 23;

  var S41 = 6, S42 = 10, S43 = 15, S44 = 21;

  string = md5_Utf8Encode(string);

  x = md5_ConvertToWordArray(string);

  a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;

  for (k = 0; k < x.length; k += 16) {

    AA = a; BB = b; CC = c; DD = d;

    a = md5_FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);

    d = md5_FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);

    c = md5_FF(c, d, a, b, x[k + 2], S13, 0x242070DB);

    b = md5_FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);

    a = md5_FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);

    d = md5_FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);

    c = md5_FF(c, d, a, b, x[k + 6], S13, 0xA8304613);

    b = md5_FF(b, c, d, a, x[k + 7], S14, 0xFD469501);

    a = md5_FF(a, b, c, d, x[k + 8], S11, 0x698098D8);

    d = md5_FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);

    c = md5_FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);

    b = md5_FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);

    a = md5_FF(a, b, c, d, x[k + 12], S11, 0x6B901122);

    d = md5_FF(d, a, b, c, x[k + 13], S12, 0xFD987193);

    c = md5_FF(c, d, a, b, x[k + 14], S13, 0xA679438E);

    b = md5_FF(b, c, d, a, x[k + 15], S14, 0x49B40821);

    a = md5_GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);

    d = md5_GG(d, a, b, c, x[k + 6], S22, 0xC040B340);

    c = md5_GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);

    b = md5_GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);

    a = md5_GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);

    d = md5_GG(d, a, b, c, x[k + 10], S22, 0x2441453);

    c = md5_GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);

    b = md5_GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);

    a = md5_GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);

    d = md5_GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);

    c = md5_GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);

    b = md5_GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);

    a = md5_GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);

    d = md5_GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);

    c = md5_GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);

    b = md5_GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);

    a = md5_HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);

    d = md5_HH(d, a, b, c, x[k + 8], S32, 0x8771F681);

    c = md5_HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);

    b = md5_HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);

    a = md5_HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);

    d = md5_HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);

    c = md5_HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);

    b = md5_HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);

    a = md5_HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);

    d = md5_HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);

    c = md5_HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);

    b = md5_HH(b, c, d, a, x[k + 6], S34, 0x4881D05);

    a = md5_HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);

    d = md5_HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);

    c = md5_HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);

    b = md5_HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);

    a = md5_II(a, b, c, d, x[k + 0], S41, 0xF4292244);

    d = md5_II(d, a, b, c, x[k + 7], S42, 0x432AFF97);

    c = md5_II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);

    b = md5_II(b, c, d, a, x[k + 5], S44, 0xFC93A039);

    a = md5_II(a, b, c, d, x[k + 12], S41, 0x655B59C3);

    d = md5_II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);

    c = md5_II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);

    b = md5_II(b, c, d, a, x[k + 1], S44, 0x85845DD1);

    a = md5_II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);

    d = md5_II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);

    c = md5_II(c, d, a, b, x[k + 6], S43, 0xA3014314);

    b = md5_II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);

    a = md5_II(a, b, c, d, x[k + 4], S41, 0xF7537E82);

    d = md5_II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);

    c = md5_II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);

    b = md5_II(b, c, d, a, x[k + 9], S44, 0xEB86D391);

    a = md5_AddUnsigned(a, AA);

    b = md5_AddUnsigned(b, BB);

    c = md5_AddUnsigned(c, CC);

    d = md5_AddUnsigned(d, DD);

  }

  return (md5_WordToHex(a) + md5_WordToHex(b) + md5_WordToHex(c) + md5_WordToHex(d)).toLowerCase();

}

记得，如果小程序要加

module.exports = {

  md5: md5

}

————————————————
版权声明：本文为CSDN博主「小胖龙」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/weixin_42275932/article/details/81001616

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