用JS 写个MD5加密
以下是JS代码实现MD5加密：
function md5(str) {
let rotateLeft = (lValue, iShiftBits) => {
return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
};
let addUnsigned = (lX, lY) => {
let 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);
}
};
let f = (x, y, z) => {
return (x & y) | ((~x) & z);
};
let g = (x, y, z) => {
return (x & z) | (y & (~z));
};
let h = (x, y, z) => {
return (x ^ y ^ z);
};
let i = (x, y, z) => {
return (y ^ (x | (~z)));
};
let 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);
};
let 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);
};
let 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);
};
let 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);
};
let convertToWordArray = (str) => {
let lWordCount;
let lMessageLength = str.length;
let lNumberOfWords_temp1 = lMessageLength + 8;
let lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64;
let lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;
let lWordArray = Array(lNumberOfWords - 1);
let lBytePosition = 0;
let lByteCount = 0;
while (lByteCount < lMessageLength) {
lWordCount = (lByteCount - (lByteCount % 4)) / 4;
lBytePosition = (lByteCount % 4) * 8;
lWordArray[lWordCount] = (lWordArray[lWordCount] | (str.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;
};
let wordToHex = (lValue) => {
let 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;
};
let uTF8Encode = (str) => {
str = str.replace(/\r\n/g, "\n");
let utftext = "";
for (let n = 0; n < str.length; n++) {
let c = str.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;
};
let x = Array();
let k, AA, BB, CC, DD, a, b, c, d, S11, S12, S13, S14, S21, S22, S23, S24, S31, S32, S33, S34, S41, S42, S43, S44;
let str = uTF8Encode(str);
x = convertToWordArray(str);
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 = ff(a, b, c, d, x[k + 0], 7, 0xD76AA478);
d = ff(d, a, b, c, x[k + 1], 12, 0xE8C7B756);
c = ff(c, d, a, b, x[k + 2], 17, 0x242070DB);
b = ff(b, c, d, a, x[k + 3], 22, 0xC1BDCEEE);
a = ff(a, b, c, d, x[k + 4], 7, 0xF57C0FAF);
d = ff(d, a, b, c, x[k + 5], 12, 0x4787C62A);
c = ff(c, d, a, b, x[k + 6], 17, 0xA8304613);
b = ff(b, c, d, a, x[k + 7], 22, 0xFD469501);
a = ff(a, b, c, d, x[k + 8], 7, 0x698098D8);
d = ff(d, a, b, c, x[k + 9], 12, 0x8B44F7AF);
c = ff(c, d, a, b, x[k + 10], 17, 0xFFFF5BB1);
b = ff(b, c, d, a, x[k + 11], 22, 0x895CD7BE);
a = ff(a, b, c, d, x[k + 12], 7, 0x6B901122);
d = ff(d, a, b, c, x[k + 13], 12, 0xFD987193);
c = ff(c, d, a, b, x[k + 14], 17, 0xA679438E);
b = ff(b, c, d, a, x[k + 15], 22, 0x49B40821);
a = gg(a, b, c, d, x[k + 1], 5, 0xF61E2562);
d = gg(d, a, b, c, x[k + 6], 9, 0xC040B340);
c = gg(c, d, a, b, x[k + 11], 14, 0x265E5A51);
b = gg(b, c, d, a, x[k + 0], 20, 0xE9B6C7AA);
a = gg(a, b, c, d, x[k + 5], 5, 0xD62F105D);
d = gg(d, a, b, c, x[k + 10], 9, 0x2441453);
c = gg(c, d, a, b, x[k + 15], 14, 0xD8A1E681);
b = gg(b, c, d, a, x[k + 4], 20, 0xE7D3FBC8);
a = gg(a, b, c, d, x[k + 9], 5, 0x21E1CDE6);
d = gg(d, a, b, c, x[k + 14], 9, 0xC33707D6);
c = gg(c, d, a, b, x[k + 3], 14, 0xF4D50D87);
b = gg(b, c, d, a, x[k + 8], 20, 0x455A14ED);
a = gg(a, b, c, d, x[k + 13], 5, 0xA9E3E905);
d = gg(d, a, b, c, x[k + 2], 9, 0xFCEFA3F8);
c = gg(c, d, a, b, x[k + 7], 14, 0x676F02D9);
b = gg(b, c, d, a, x[k + 12], 20, 0x8D2A4C8A);
a = hh(a, b, c, d, x[k + 5], 4, 0xFFFA3942);
d = hh(d, a, b, c, x[k + 8], 11, 0x8771F681);
c = hh(c, d, a, b, x[k + 11], 16, 0x6D9D6122);
b = hh(b, c, d, a, x[k + 14], 23, 0xFDE5380C);
a = hh(a, b, c, d, x[k + 1], 4, 0xA4BEEA44);
d = hh(d, a, b, c, x[k + 4], 11, 0x4BDECFA9);
c = hh(c, d, a, b, x[k + 7], 16, 0xF6BB4B60);
b = hh(b, c, d, a, x[k + 10], 23, 0xBEBFBC70);
a = hh(a, b, c, d, x[k + 13], 4, 0x289B7EC6);
d = hh(d, a, b, c, x[k + 0], 11, 0xEAA127FA);
c = hh(c, d, a, b, x[k + 3], 16, 0xD4EF3085);
b = hh(b, c, d, a, x[k + 6], 23, 0x4881D05);
a = hh(a, b, c, d, x[k + 9], 4, 0xD9D4D039);
d = hh(d, a, b, c, x[k + 12], 11, 0xE6DB99E5);
c = hh(c, d, a, b, x[k + 15], 16, 0x1FA27CF8);
b = hh(b, c, d, a, x[k + 2], 23, 0xC4AC5665);
a = ii(a, b, c, d, x[k + 0], 6, 0xF4292244);
d = ii(d, a, b, c, x[k + 7], 10, 0x432AFF97);
c = ii(c, d, a, b, x[k + 14], 15, 0xAB9423A7);
b = ii(b, c, d, a, x[k + 5], 21, 0xFC93A039);
a = ii(a, b, c, d, x[k + 12], 6, 0x655B59C3);
d = ii(d, a, b, c, x[k + 3], 10, 0x8F0CCC92);
c = ii(c, d, a, b, x[k + 10], 15, 0xFFEFF47D);
b = ii(b, c, d, a, x[k + 1], 21, 0x85845DD1);
a = ii(a, b, c, d, x[k + 8], 6, 0x6FA87E4F);
d = ii(d, a, b, c, x[k + 15], 10, 0xFE2CE6E0);
c = ii(c, d, a, b, x[k + 6], 15, 0xA3014314);
b = ii(b, c, d, a, x[k + 13], 21, 0x4E0811A1);
a = ii(a, b, c, d, x[k + 4], 6, 0xF7537E82);
d = ii(d, a, b, c, x[k + 11], 10, 0xBD3AF235);
c = ii(c, d, a, b, x[k + 2], 15, 0x2AD7D2BB);
b = ii(b, c, d, a, x[k + 9], 21, 0xEB86D391);
a = addUnsigned(a, AA);
b = addUnsigned(b, BB);
c = addUnsigned(c, CC);
d = addUnsigned(d, DD);
}
let temp = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
return temp.toLowerCase();
}
使用方法：
let str = 'hello world';
let encryptedStr = md5(str);
console.log(encryptedStr);
``
原文地址: https://www.cveoy.top/t/topic/cOmp 著作权归作者所有。请勿转载和采集!