You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.5 KiB
104 lines
2.5 KiB
4 weeks ago
|
"use strict";
|
||
|
|
|
||
|
|
Object.defineProperty(exports, "__esModule", {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
exports.default = void 0;
|
||
|
|
|
||
|
|
// Adapted from Chris Veness' SHA1 code at
|
||
|
|
// http://www.movable-type.co.uk/scripts/sha1.html
|
||
|
|
function f(s, x, y, z) {
|
||
|
|
switch (s) {
|
||
|
|
case 0:
|
||
|
|
return x & y ^ ~x & z;
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
return x ^ y ^ z;
|
||
|
|
|
||
|
|
case 2:
|
||
|
|
return x & y ^ x & z ^ y & z;
|
||
|
|
|
||
|
|
case 3:
|
||
|
|
return x ^ y ^ z;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function ROTL(x, n) {
|
||
|
|
return x << n | x >>> 32 - n;
|
||
|
|
}
|
||
|
|
|
||
|
|
function sha1(bytes) {
|
||
|
|
const K = [0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6];
|
||
|
|
const H = [0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0];
|
||
|
|
|
||
|
|
if (typeof bytes === 'string') {
|
||
|
|
const msg = unescape(encodeURIComponent(bytes)); // UTF8 escape
|
||
|
|
|
||
|
|
bytes = [];
|
||
|
|
|
||
|
|
for (let i = 0; i < msg.length; ++i) {
|
||
|
|
bytes.push(msg.charCodeAt(i));
|
||
|
|
}
|
||
|
|
} else if (!Array.isArray(bytes)) {
|
||
|
|
// Convert Array-like to Array
|
||
|
|
bytes = Array.prototype.slice.call(bytes);
|
||
|
|
}
|
||
|
|
|
||
|
|
bytes.push(0x80);
|
||
|
|
const l = bytes.length / 4 + 2;
|
||
|
|
const N = Math.ceil(l / 16);
|
||
|
|
const M = new Array(N);
|
||
|
|
|
||
|
|
for (let i = 0; i < N; ++i) {
|
||
|
|
const arr = new Uint32Array(16);
|
||
|
|
|
||
|
|
for (let j = 0; j < 16; ++j) {
|
||
|
|
arr[j] = bytes[i * 64 + j * 4] << 24 | bytes[i * 64 + j * 4 + 1] << 16 | bytes[i * 64 + j * 4 + 2] << 8 | bytes[i * 64 + j * 4 + 3];
|
||
|
|
}
|
||
|
|
|
||
|
|
M[i] = arr;
|
||
|
|
}
|
||
|
|
|
||
|
|
M[N - 1][14] = (bytes.length - 1) * 8 / Math.pow(2, 32);
|
||
|
|
M[N - 1][14] = Math.floor(M[N - 1][14]);
|
||
|
|
M[N - 1][15] = (bytes.length - 1) * 8 & 0xffffffff;
|
||
|
|
|
||
|
|
for (let i = 0; i < N; ++i) {
|
||
|
|
const W = new Uint32Array(80);
|
||
|
|
|
||
|
|
for (let t = 0; t < 16; ++t) {
|
||
|
|
W[t] = M[i][t];
|
||
|
|
}
|
||
|
|
|
||
|
|
for (let t = 16; t < 80; ++t) {
|
||
|
|
W[t] = ROTL(W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16], 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
let a = H[0];
|
||
|
|
let b = H[1];
|
||
|
|
let c = H[2];
|
||
|
|
let d = H[3];
|
||
|
|
let e = H[4];
|
||
|
|
|
||
|
|
for (let t = 0; t < 80; ++t) {
|
||
|
|
const s = Math.floor(t / 20);
|
||
|
|
const T = ROTL(a, 5) + f(s, b, c, d) + e + K[s] + W[t] >>> 0;
|
||
|
|
e = d;
|
||
|
|
d = c;
|
||
|
|
c = ROTL(b, 30) >>> 0;
|
||
|
|
b = a;
|
||
|
|
a = T;
|
||
|
|
}
|
||
|
|
|
||
|
|
H[0] = H[0] + a >>> 0;
|
||
|
|
H[1] = H[1] + b >>> 0;
|
||
|
|
H[2] = H[2] + c >>> 0;
|
||
|
|
H[3] = H[3] + d >>> 0;
|
||
|
|
H[4] = H[4] + e >>> 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return [H[0] >> 24 & 0xff, H[0] >> 16 & 0xff, H[0] >> 8 & 0xff, H[0] & 0xff, H[1] >> 24 & 0xff, H[1] >> 16 & 0xff, H[1] >> 8 & 0xff, H[1] & 0xff, H[2] >> 24 & 0xff, H[2] >> 16 & 0xff, H[2] >> 8 & 0xff, H[2] & 0xff, H[3] >> 24 & 0xff, H[3] >> 16 & 0xff, H[3] >> 8 & 0xff, H[3] & 0xff, H[4] >> 24 & 0xff, H[4] >> 16 & 0xff, H[4] >> 8 & 0xff, H[4] & 0xff];
|
||
|
|
}
|
||
|
|
|
||
|
|
var _default = sha1;
|
||
|
|
exports.default = _default;
|