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分享帮忙看下这段js 代码实现的是什么加密方法？
var o, p, q, r, s, t, u, v, w, x = [], y = 7, z = 12, A = 17, B = 22, C = 5, D = 9, E = 14, F = 20, G = 4, H = 11, I = 16, J = 23, K = 6, L = 10, M = 15, N = 21;
for (a = n(a),
x = l(a),
t = 1732584193,
u = 4023233417,
v = 2562383102,
w = 271733878,
o = 0; o < x.length; o += 16)
p = t,
q = u,
r = v,
s = w,
t = h(t, u, v, w, x[o + 0], y, 3614090360),
w = h(w, t, u, v, x[o + 1], z, 3905402710),
v = h(v, w, t, u, x[o + 2], A, 606105819),
u = h(u, v, w, t, x[o + 3], B, 3250441966),
t = h(t, u, v, w, x[o + 4], y, 4118548399),
w = h(w, t, u, v, x[o + 5], z, 1200080426),
v = h(v, w, t, u, x[o + 6], A, 2821735955),
u = h(u, v, w, t, x[o + 7], B, 4249261313),
t = h(t, u, v, w, x[o + 8], y, 1770035416),
w = h(w, t, u, v, x[o + 9], z, 2336552879),
v = h(v, w, t, u, x[o + 10], A, 4294925233),
u = h(u, v, w, t, x[o + 11], B, 2304563134),
t = h(t, u, v, w, x[o + 12], y, 1804603682),
w = h(w, t, u, v, x[o + 13], z, 4254626195),
v = h(v, w, t, u, x[o + 14], A, 2792965006),
u = h(u, v, w, t, x[o + 15], B, 1236535329),
t = i(t, u, v, w, x[o + 1], C, 4129170786),
w = i(w, t, u, v, x[o + 6], D, 3225465664),
v = i(v, w, t, u, x[o + 11], E, 643717713),
u = i(u, v, w, t, x[o + 0], F, 3921069994),
t = i(t, u, v, w, x[o + 5], C, 3593408605),
w = i(w, t, u, v, x[o + 10], D, 38016083),
v = i(v, w, t, u, x[o + 15], E, 3634488961),
u = i(u, v, w, t, x[o + 4], F, 3889429448),
t = i(t, u, v, w, x[o + 9], C, 568446438),
w = i(w, t, u, v, x[o + 14], D, 3275163606),
v = i(v, w, t, u, x[o + 3], E, 4107603335),
u = i(u, v, w, t, x[o + 8], F, 1163531501),
t = i(t, u, v, w, x[o + 13], C, 2850285829),
w = i(w, t, u, v, x[o + 2], D, 4243563512),
v = i(v, w, t, u, x[o + 7], E, 1735328473),
u = i(u, v, w, t, x[o + 12], F, 2368359562),
t = j(t, u, v, w, x[o + 5], G, 4294588738),
w = j(w, t, u, v, x[o + 8], H, 2272392833),
v = j(v, w, t, u, x[o + 11], I, 1839030562),
u = j(u, v, w, t, x[o + 14], J, 4259657740),
t = j(t, u, v, w, x[o + 1], G, 2763975236),
w = j(w, t, u, v, x[o + 4], H, 1272893353),
v = j(v, w, t, u, x[o + 7], I, 4139469664),
u = j(u, v, w, t, x[o + 10], J, 3200236656),
t = j(t, u, v, w, x[o + 13], G, 681279174),
w = j(w, t, u, v, x[o + 0], H, 3936430074),
v = j(v, w, t, u, x[o + 3], I, 3572445317),
u = j(u, v, w, t, x[o + 6], J, 76029189),
t = j(t, u, v, w, x[o + 9], G, 3654602809),
w = j(w, t, u, v, x[o + 12], H, 3873151461),
v = j(v, w, t, u, x[o + 15], I, 530742520),
u = j(u, v, w, t, x[o + 2], J, 3299628645),
t = k(t, u, v, w, x[o + 0], K, 4096336452),
w = k(w, t, u, v, x[o + 7], L, 1126891415),
v = k(v, w, t, u, x[o + 14], M, 2878612391),
u = k(u, v, w, t, x[o + 5], N, 4237533241),
t = k(t, u, v, w, x[o + 12], K, 1700485571),
w = k(w, t, u, v, x[o + 3], L, 2399980690),
v = k(v, w, t, u, x[o + 10], M, 4293915773),
u = k(u, v, w, t, x[o + 1], N, 2240044497),
t = k(t, u, v, w, x[o + 8], K, 1873313359),
w = k(w, t, u, v, x[o + 15], L, 4264355552),
v = k(v, w, t, u, x[o + 6], M, 2734768916),
u = k(u, v, w, t, x[o + 13], N, 1309151649),
t = k(t, u, v, w, x[o + 4], K, 4149444226),
w = k(w, t, u, v, x[o + 11], L, 3174756917),
v = k(v, w, t, u, x[o + 2], M, 718787259),
u = k(u, v, w, t, x[o + 9], N, 3951481745),
t = c(t, p),
u = c(u, q),
v = c(v, r),
w = c(w, s);
var O = m(t) + m(u) + m(v) + m(w);
return O.toLowerCase()
}
...全文
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sbdx 2018-06-14
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function binlMD5 (x, len) {
/* append padding */
x[len >> 5] |= 0x80 << (len % 32)
x[((len + 64) >>> 9 << 4) + 14] = len
var i
var olda
var oldb
var oldc
var oldd
var a = 1732584193
var b = -271733879
var c = -1732584194
var d = 271733878
for (i = 0; i < x.length; i += 16) {
olda = a
oldb = b
oldc = c
oldd = d
a = md5ff(a, b, c, d, x[i], 7, -680876936)
d = md5ff(d, a, b, c, x[i + 1], 12, -389564586)
c = md5ff(c, d, a, b, x[i + 2], 17, 606105819)
b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330)
a = md5ff(a, b, c, d, x[i + 4], 7, -176418897)
d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426)
c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341)
b = md5ff(b, c, d, a, x[i + 7], 22, -45705983)
a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416)
d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417)
c = md5ff(c, d, a, b, x[i + 10], 17, -42063)
b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162)
a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682)
d = md5ff(d, a, b, c, x[i + 13], 12, -40341101)
c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290)
b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329)
a = md5gg(a, b, c, d, x[i + 1], 5, -165796510)
d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632)
c = md5gg(c, d, a, b, x[i + 11], 14, 643717713)
b = md5gg(b, c, d, a, x[i], 20, -373897302)
a = md5gg(a, b, c, d, x[i + 5], 5, -701558691)
d = md5gg(d, a, b, c, x[i + 10], 9, 38016083)
c = md5gg(c, d, a, b, x[i + 15], 14, -660478335)
b = md5gg(b, c, d, a, x[i + 4], 20, -405537848)
a = md5gg(a, b, c, d, x[i + 9], 5, 568446438)
d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690)
c = md5gg(c, d, a, b, x[i + 3], 14, -187363961)
b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501)
a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467)
d = md5gg(d, a, b, c, x[i + 2], 9, -51403784)
c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473)
b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734)
a = md5hh(a, b, c, d, x[i + 5], 4, -378558)
d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463)
c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562)
b = md5hh(b, c, d, a, x[i + 14], 23, -35309556)
a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060)
d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353)
c = md5hh(c, d, a, b, x[i + 7], 16, -155497632)
b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640)
a = md5hh(a, b, c, d, x[i + 13], 4, 681279174)
d = md5hh(d, a, b, c, x[i], 11, -358537222)
c = md5hh(c, d, a, b, x[i + 3], 16, -722521979)
b = md5hh(b, c, d, a, x[i + 6], 23, 76029189)
a = md5hh(a, b, c, d, x[i + 9], 4, -640364487)
d = md5hh(d, a, b, c, x[i + 12], 11, -421815835)
c = md5hh(c, d, a, b, x[i + 15], 16, 530742520)
b = md5hh(b, c, d, a, x[i + 2], 23, -995338651)
a = md5ii(a, b, c, d, x[i], 6, -198630844)
d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415)
c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905)
b = md5ii(b, c, d, a, x[i + 5], 21, -57434055)
a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571)
d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606)
c = md5ii(c, d, a, b, x[i + 10], 15, -1051523)
b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799)
a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359)
d = md5ii(d, a, b, c, x[i + 15], 10, -30611744)
c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380)
b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649)
a = md5ii(a, b, c, d, x[i + 4], 6, -145523070)
d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379)
c = md5ii(c, d, a, b, x[i + 2], 15, 718787259)
b = md5ii(b, c, d, a, x[i + 9], 21, -343485551)
a = safeAdd(a, olda)
b = safeAdd(b, oldb)
c = safeAdd(c, oldc)
d = safeAdd(d, oldd)
}
return [a, b, c, d]
}
sbdx 2018-06-14
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看起来像是MD5的算法
