node-csfd-api
Version:
ČSFD API in JavaScript. Amazing NPM library for scrapping csfd.cz :)
167 lines (166 loc) • 3.59 kB
JavaScript
//#region src/anubis/sha256.ts
const K = new Uint32Array([
1116352408,
1899447441,
3049323471,
3921009573,
961987163,
1508970993,
2453635748,
2870763221,
3624381080,
310598401,
607225278,
1426881987,
1925078388,
2162078206,
2614888103,
3248222580,
3835390401,
4022224774,
264347078,
604807628,
770255983,
1249150122,
1555081692,
1996064986,
2554220882,
2821834349,
2952996808,
3210313671,
3336571891,
3584528711,
113926993,
338241895,
666307205,
773529912,
1294757372,
1396182291,
1695183700,
1986661051,
2177026350,
2456956037,
2730485921,
2820302411,
3259730800,
3345764771,
3516065817,
3600352804,
4094571909,
275423344,
430227734,
506948616,
659060556,
883997877,
958139571,
1322822218,
1537002063,
1747873779,
1955562222,
2024104815,
2227730452,
2361852424,
2428436474,
2756734187,
3204031479,
3329325298
]);
const rotr = (x, n) => x >>> n | x << 32 - n;
const HEX = "0123456789abcdef";
/** SHA-256 digest of `text` (UTF-8) as 32 raw bytes. */
const sha256 = (text) => {
const bytes = new TextEncoder().encode(text);
const length = bytes.length;
const withOne = length + 1;
const total = withOne + (56 - withOne % 64 + 64) % 64 + 8;
const message = new Uint8Array(total);
message.set(bytes);
message[length] = 128;
const bitLengthHi = Math.floor(length / 536870912);
const bitLengthLo = length * 8 >>> 0;
message[total - 8] = bitLengthHi >>> 24 & 255;
message[total - 7] = bitLengthHi >>> 16 & 255;
message[total - 6] = bitLengthHi >>> 8 & 255;
message[total - 5] = bitLengthHi & 255;
message[total - 4] = bitLengthLo >>> 24 & 255;
message[total - 3] = bitLengthLo >>> 16 & 255;
message[total - 2] = bitLengthLo >>> 8 & 255;
message[total - 1] = bitLengthLo & 255;
let h0 = 1779033703;
let h1 = 3144134277;
let h2 = 1013904242;
let h3 = 2773480762;
let h4 = 1359893119;
let h5 = 2600822924;
let h6 = 528734635;
let h7 = 1541459225;
const w = /* @__PURE__ */ new Uint32Array(64);
for (let offset = 0; offset < total; offset += 64) {
for (let i = 0; i < 16; i++) {
const j = offset + i * 4;
w[i] = message[j] << 24 | message[j + 1] << 16 | message[j + 2] << 8 | message[j + 3];
}
for (let i = 16; i < 64; i++) {
const s0 = rotr(w[i - 15], 7) ^ rotr(w[i - 15], 18) ^ w[i - 15] >>> 3;
const s1 = rotr(w[i - 2], 17) ^ rotr(w[i - 2], 19) ^ w[i - 2] >>> 10;
w[i] = w[i - 16] + s0 + w[i - 7] + s1 | 0;
}
let a = h0;
let b = h1;
let c = h2;
let d = h3;
let e = h4;
let f = h5;
let g = h6;
let h = h7;
for (let i = 0; i < 64; i++) {
const S1 = rotr(e, 6) ^ rotr(e, 11) ^ rotr(e, 25);
const ch = e & f ^ ~e & g;
const t1 = h + S1 + ch + K[i] + w[i] | 0;
const t2 = (rotr(a, 2) ^ rotr(a, 13) ^ rotr(a, 22)) + (a & b ^ a & c ^ b & c) | 0;
h = g;
g = f;
f = e;
e = d + t1 | 0;
d = c;
c = b;
b = a;
a = t1 + t2 | 0;
}
h0 = h0 + a | 0;
h1 = h1 + b | 0;
h2 = h2 + c | 0;
h3 = h3 + d | 0;
h4 = h4 + e | 0;
h5 = h5 + f | 0;
h6 = h6 + g | 0;
h7 = h7 + h | 0;
}
const digest = /* @__PURE__ */ new Uint8Array(32);
const words = [
h0,
h1,
h2,
h3,
h4,
h5,
h6,
h7
];
for (let i = 0; i < 8; i++) {
const v = words[i];
digest[i * 4] = v >>> 24 & 255;
digest[i * 4 + 1] = v >>> 16 & 255;
digest[i * 4 + 2] = v >>> 8 & 255;
digest[i * 4 + 3] = v & 255;
}
return digest;
};
const toHex = (bytes) => {
let hex = "";
for (let i = 0; i < bytes.length; i++) hex += HEX[bytes[i] >> 4] + HEX[bytes[i] & 15];
return hex;
};
//#endregion
export { sha256, toHex };
//# sourceMappingURL=sha256.js.map