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铜仁js实现md5加密(16位)

分类:网络安全 发布时间:2023-08-07 2675次浏览

<script>function md5(string,bit) { function md5_Rotat...

<script>

function md5(string,bit) {

    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);

    }

    if(bit==32){

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

    }

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

}

</script>




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