国外和老代码比较喜欢用这个。
特征：
4283543511, 3981806797
3301882366, 444984403
x64Xor、x64Multiply等带有x64的函数命名代码：
var CryptoJS = require('crypto-js')
var hex_chr = "0123456789abcdef";
function rhex(num) {
str = "";
for (j = 0; j <= 3; j++)
str += hex_chr.charAt((num >> (j * 8 + 4)) & 0x0F) + hex_chr.charAt((num >> (j * 8)) & 0x0F);
return str;
}
function str2blks_MD5(str) {
nblk = ((str.length + 8) >> 6) + 1;
blks = new Array(nblk * 16);
for (i = 0; i < nblk * 16; i++)
blks[i] = 0;
for (i = 0; i < str.length; i++)
blks[i >> 2] |= str.charCodeAt(i) << ((i % 4) * 8);
blks[i >> 2] |= 0x80 << ((i % 4) * 8);
blks[nblk * 16 - 2] = str.length * 8;
return blks;
}
function add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
function rol(num, cnt) {
return (num << cnt) | (num >>> (32 - cnt));
}
function cmn(q, a, b, x, s, t) {
return add(rol(add(add(a, q), add(x, t)), s), b);
}
function ff(a, b, c, d, x, s, t) {
return cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function gg(a, b, c, d, x, s, t) {
return cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function hh(a, b, c, d, x, s, t) {
return cmn(b ^ c ^ d, a, b, x, s, t);
}
function ii(a, b, c, d, x, s, t) {
return cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function MD5(str) {
x = str2blks_MD5(str);
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for (i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = ff(a, b, c, d, x[i + 0], 7, -680876936);
d = ff(d, a, b, c, x[i + 1], 12, -389564586);
c = ff(c, d, a, b, x[i + 2], 17, 606105819);
b = ff(b, c, d, a, x[i + 3], 22, -1044525330);
a = ff(a, b, c, d, x[i + 4], 7, -176418897);
d = ff(d, a, b, c, x[i + 5], 12, 1200080426);
c = ff(c, d, a, b, x[i + 6], 17, -1473231341);
b = ff(b, c, d, a, x[i + 7], 22, -45705983);
a = ff(a, b, c, d, x[i + 8], 7, 1770035416);
d = ff(d, a, b, c, x[i + 9], 12, -1958414417);
c = ff(c, d, a, b, x[i + 10], 17, -42063);
b = ff(b, c, d, a, x[i + 11], 22, -1990404162);
a = ff(a, b, c, d, x[i + 12], 7, 1804603682);
d = ff(d, a, b, c, x[i + 13], 12, -40341101);
c = ff(c, d, a, b, x[i + 14], 17, -1502002290);
b = ff(b, c, d, a, x[i + 15], 22, 1236535329);
a = gg(a, b, c, d, x[i + 1], 5, -165796510);
d = gg(d, a, b, c, x[i + 6], 9, -1069501632);
c = gg(c, d, a, b, x[i + 11], 14, 643717713);
b = gg(b, c, d, a, x[i + 0], 20, -373897302);
a = gg(a, b, c, d, x[i + 5], 5, -701558691);
d = gg(d, a, b, c, x[i + 10], 9, 38016083);
c = gg(c, d, a, b, x[i + 15], 14, -660478335);
b = gg(b, c, d, a, x[i + 4], 20, -405537848);
a = gg(a, b, c, d, x[i + 9], 5, 568446438);
d = gg(d, a, b, c, x[i + 14], 9, -1019803690);
c = gg(c, d, a, b, x[i + 3], 14, -187363961);
b = gg(b, c, d, a, x[i + 8], 20, 1163531501);
a = gg(a, b, c, d, x[i + 13], 5, -1444681467);
d = gg(d, a, b, c, x[i + 2], 9, -51403784);
c = gg(c, d, a, b, x[i + 7], 14, 1735328473);
b = gg(b, c, d, a, x[i + 12], 20, -1926607734);
a = hh(a, b, c, d, x[i + 5], 4, -378558);
d = hh(d, a, b, c, x[i + 8], 11, -2022574463);
c = hh(c, d, a, b, x[i + 11], 16, 1839030562);
b = hh(b, c, d, a, x[i + 14], 23, -35309556);
a = hh(a, b, c, d, x[i + 1], 4, -1530992060);
d = hh(d, a, b, c, x[i + 4], 11, 1272893353);
c = hh(c, d, a, b, x[i + 7], 16, -155497632);
b = hh(b, c, d, a, x[i + 10], 23, -1094730640);
a = hh(a, b, c, d, x[i + 13], 4, 681279174);
d = hh(d, a, b, c, x[i + 0], 11, -358537222);
c = hh(c, d, a, b, x[i + 3], 16, -722521979);
b = hh(b, c, d, a, x[i + 6], 23, 76029189);
a = hh(a, b, c, d, x[i + 9], 4, -640364487);
d = hh(d, a, b, c, x[i + 12], 11, -421815835);
c = hh(c, d, a, b, x[i + 15], 16, 530742520);
b = hh(b, c, d, a, x[i + 2], 23, -995338651);
a = ii(a, b, c, d, x[i + 0], 6, -198630844);
d = ii(d, a, b, c, x[i + 7], 10, 1126891415);
c = ii(c, d, a, b, x[i + 14], 15, -1416354905);
b = ii(b, c, d, a, x[i + 5], 21, -57434055);
a = ii(a, b, c, d, x[i + 12], 6, 1700485571);
d = ii(d, a, b, c, x[i + 3], 10, -1894986606);
c = ii(c, d, a, b, x[i + 10], 15, -1051523);
b = ii(b, c, d, a, x[i + 1], 21, -2054922799);
a = ii(a, b, c, d, x[i + 8], 6, 1873313359);
d = ii(d, a, b, c, x[i + 15], 10, -30611744);
c = ii(c, d, a, b, x[i + 6], 15, -1560198380);
b = ii(b, c, d, a, x[i + 13], 21, 1309151649);
a = ii(a, b, c, d, x[i + 4], 6, -145523070);
d = ii(d, a, b, c, x[i + 11], 10, -1120210379);
c = ii(c, d, a, b, x[i + 2], 15, 718787259);
b = ii(b, c, d, a, x[i + 9], 21, -343485551);
a = add(a, olda);
b = add(b, oldb);
c = add(c, oldc);
d = add(d, oldd);
}
return rhex(a) + rhex(b) + rhex(c) + rhex(d);
}
function getMD5Value(data) {
var a = data;
var b = "\xa3\xac\xa1\xa3";
var c = "fdjf,jkgfkl";
var s = a + b + c;
return MD5(s);
}
var x64Add = function(m, n) {
m = [m[0] >>> 16, m[0] & 65535, m[1] >>> 16, m[1] & 65535];
n = [n[0] >>> 16, n[0] & 65535, n[1] >>> 16, n[1] & 65535];
var o = [0, 0, 0, 0];
o[3] += m[3] + n[3];
o[2] += o[3] >>> 16;
o[3] &= 65535;
o[2] += m[2] + n[2];
o[1] += o[2] >>> 16;
o[2] &= 65535;
o[1] += m[1] + n[1];
o[0] += o[1] >>> 16;
o[1] &= 65535;
o[0] += m[0] + n[0];
o[0] &= 65535;
return [(o[0] << 16) | o[1], (o[2] << 16) | o[3]]
};
var x64Multiply = function(m, n) {
m = [m[0] >>> 16, m[0] & 65535, m[1] >>> 16, m[1] & 65535];
n = [n[0] >>> 16, n[0] & 65535, n[1] >>> 16, n[1] & 65535];
var o = [0, 0, 0, 0];
o[3] += m[3] * n[3];
o[2] += o[3] >>> 16;
o[3] &= 65535;
o[2] += m[2] * n[3];
o[1] += o[2] >>> 16;
o[2] &= 65535;
o[2] += m[3] * n[2];
o[1] += o[2] >>> 16;
o[2] &= 65535;
o[1] += m[1] * n[3];
o[0] += o[1] >>> 16;
o[1] &= 65535;
o[1] += m[2] * n[2];
o[0] += o[1] >>> 16;
o[1] &= 65535;
o[1] += m[3] * n[1];
o[0] += o[1] >>> 16;
o[1] &= 65535;
o[0] += (m[0] * n[3]) + (m[1] * n[2]) + (m[2] * n[1]) + (m[3] * n[0]);
o[0] &= 65535;
return [(o[0] << 16) | o[1], (o[2] << 16) | o[3]]
};
var x64Rotl = function(m, n) {
n %= 64;
if (n === 32) {
return [m[1], m[0]]
} else {
if (n < 32) {
return [(m[0] << n) | (m[1] >>> (32 - n)), (m[1] << n) | (m[0] >>> (32 - n))]
} else {
n -= 32;
return [(m[1] << n) | (m[0] >>> (32 - n)), (m[0] << n) | (m[1] >>> (32 - n))]
}
}
};
var x64LeftShift = function(m, n) {
n %= 64;
if (n === 0) {
return m
} else {
if (n < 32) {
return [(m[0] << n) | (m[1] >>> (32 - n)), m[1] << n]
} else {
return [m[1] << (n - 32), 0]
}
}
};
var x64Xor = function(m, n) {
return [m[0] ^ n[0], m[1] ^ n[1]]
};
var x64Fmix = function(h) {
h = x64Xor(h, [0, h[0] >>> 1]);
h = x64Multiply(h, [4283543511, 3981806797]);
h = x64Xor(h, [0, h[0] >>> 1]);
h = x64Multiply(h, [3301882366, 444984403]);
h = x64Xor(h, [0, h[0] >>> 1]);
return h
};
var Fingerprint2_x64hash128 = function(key, seed) {
key = key || "";
seed = seed || 0;
var remainder = key.length % 16;
var bytes = key.length - remainder;
var h1 = [0, seed];
var h2 = [0, seed];
var k1 = [0, 0];
var k2 = [0, 0];
var c1 = [2277735313, 289559509];
var c2 = [1291169091, 658871167];
for (var i = 0; i < bytes; i = i + 16) {
k1 = [((key.charCodeAt(i + 4) & 255)) | ((key.charCodeAt(i + 5) & 255) << 8) | ((key.charCodeAt(i + 6) & 255) << 16) | ((key.charCodeAt(i + 7) & 255) << 24), ((key.charCodeAt(i) & 255)) | ((key.charCodeAt(i + 1) & 255) << 8) | ((key.charCodeAt(i + 2) & 255) << 16) | ((key.charCodeAt(i + 3) & 255) << 24)];
k2 = [((key.charCodeAt(i + 12) & 255)) | ((key.charCodeAt(i + 13) & 255) << 8) | ((key.charCodeAt(i + 14) & 255) << 16) | ((key.charCodeAt(i + 15) & 255) << 24), ((key.charCodeAt(i + 8) & 255)) | ((key.charCodeAt(i + 9) & 255) << 8) | ((key.charCodeAt(i + 10) & 255) << 16) | ((key.charCodeAt(i + 11) & 255) << 24)];
k1 = x64Multiply(k1, c1);
k1 = x64Rotl(k1, 31);
k1 = x64Multiply(k1, c2);
h1 = x64Xor(h1, k1);
h1 = x64Rotl(h1, 27);
h1 = x64Add(h1, h2);
h1 = x64Add(x64Multiply(h1, [0, 5]), [0, 1390208809]);
k2 = x64Multiply(k2, c2);
k2 = x64Rotl(k2, 33);
k2 = x64Multiply(k2, c1);
h2 = x64Xor(h2, k2);
h2 = x64Rotl(h2, 31);
h2 = x64Add(h2, h1);
h2 = x64Add(x64Multiply(h2, [0, 5]), [0, 944331445])
}
k1 = [0, 0];
k2 = [0, 0];
switch (remainder) {
case 15:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 14)], 48));
case 14:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 13)], 40));
case 13:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 12)], 32));
case 12:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 11)], 24));
case 11:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 10)], 16));
case 10:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 9)], 8));
case 9:
k2 = x64Xor(k2, [0, key.charCodeAt(i + 8)]);
k2 = x64Multiply(k2, c2);
k2 = x64Rotl(k2, 33);
k2 = x64Multiply(k2, c1);
h2 = x64Xor(h2, k2);
case 8:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 7)], 56));
case 7:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 6)], 48));
case 6:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 5)], 40));
case 5:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 4)], 32));
case 4:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 3)], 24));
case 3:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 2)], 16));
case 2:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 1)], 8));
case 1:
k1 = x64Xor(k1, [0, key.charCodeAt(i)]);
k1 = x64Multiply(k1, c1);
k1 = x64Rotl(k1, 31);
k1 = x64Multiply(k1, c2);
h1 = x64Xor(h1, k1)
}
h1 = x64Xor(h1, [0, key.length]);
h2 = x64Xor(h2, [0, key.length]);
h1 = x64Add(h1, h2);
h2 = x64Add(h2, h1);
h1 = x64Fmix(h1);
h2 = x64Fmix(h2);
h1 = x64Add(h1, h2);
h2 = x64Add(h2, h1);
return ("00000000" + (h1[0] >>> 0).toString(16)).slice(-8) + ("00000000" + (h1[1] >>> 0).toString(16)).slice(-8) + ("00000000" + (h2[0] >>> 0).toString(16)).slice(-8) + ("00000000" + (h2[1] >>> 0).toString(16)).slice(-8)
};
function Fingerprint_md5(str_data, seed) {
return Fingerprint2_x64hash128(canvas_url, seed);
}
let data = '123456'
console.log(Fingerprint_md5(data, 499)); // e6c8e634d4940b0cc440e486dfd8e351
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