124 lines
5.6 KiB
JavaScript
124 lines
5.6 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.blake2s = exports.BLAKE2s = exports.B2S_IV = void 0;
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exports.compress = compress;
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const _blake_js_1 = require("./_blake.js");
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const _u64_js_1 = require("./_u64.js");
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const utils_js_1 = require("./utils.js");
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// Initial state: same as SHA256
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// first 32 bits of the fractional parts of the square roots of the first 8 primes 2..19
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// prettier-ignore
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exports.B2S_IV = new Uint32Array([
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0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
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]);
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// Mixing function G splitted in two halfs
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function G1s(a, b, c, d, x) {
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a = (a + b + x) | 0;
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d = (0, utils_js_1.rotr)(d ^ a, 16);
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c = (c + d) | 0;
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b = (0, utils_js_1.rotr)(b ^ c, 12);
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return { a, b, c, d };
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}
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function G2s(a, b, c, d, x) {
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a = (a + b + x) | 0;
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d = (0, utils_js_1.rotr)(d ^ a, 8);
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c = (c + d) | 0;
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b = (0, utils_js_1.rotr)(b ^ c, 7);
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return { a, b, c, d };
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}
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// prettier-ignore
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function compress(s, offset, msg, rounds, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) {
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let j = 0;
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for (let i = 0; i < rounds; i++) {
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({ a: v0, b: v4, c: v8, d: v12 } = G1s(v0, v4, v8, v12, msg[offset + s[j++]]));
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({ a: v0, b: v4, c: v8, d: v12 } = G2s(v0, v4, v8, v12, msg[offset + s[j++]]));
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({ a: v1, b: v5, c: v9, d: v13 } = G1s(v1, v5, v9, v13, msg[offset + s[j++]]));
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({ a: v1, b: v5, c: v9, d: v13 } = G2s(v1, v5, v9, v13, msg[offset + s[j++]]));
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({ a: v2, b: v6, c: v10, d: v14 } = G1s(v2, v6, v10, v14, msg[offset + s[j++]]));
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({ a: v2, b: v6, c: v10, d: v14 } = G2s(v2, v6, v10, v14, msg[offset + s[j++]]));
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({ a: v3, b: v7, c: v11, d: v15 } = G1s(v3, v7, v11, v15, msg[offset + s[j++]]));
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({ a: v3, b: v7, c: v11, d: v15 } = G2s(v3, v7, v11, v15, msg[offset + s[j++]]));
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({ a: v0, b: v5, c: v10, d: v15 } = G1s(v0, v5, v10, v15, msg[offset + s[j++]]));
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({ a: v0, b: v5, c: v10, d: v15 } = G2s(v0, v5, v10, v15, msg[offset + s[j++]]));
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({ a: v1, b: v6, c: v11, d: v12 } = G1s(v1, v6, v11, v12, msg[offset + s[j++]]));
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({ a: v1, b: v6, c: v11, d: v12 } = G2s(v1, v6, v11, v12, msg[offset + s[j++]]));
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({ a: v2, b: v7, c: v8, d: v13 } = G1s(v2, v7, v8, v13, msg[offset + s[j++]]));
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({ a: v2, b: v7, c: v8, d: v13 } = G2s(v2, v7, v8, v13, msg[offset + s[j++]]));
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({ a: v3, b: v4, c: v9, d: v14 } = G1s(v3, v4, v9, v14, msg[offset + s[j++]]));
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({ a: v3, b: v4, c: v9, d: v14 } = G2s(v3, v4, v9, v14, msg[offset + s[j++]]));
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}
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return { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 };
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}
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class BLAKE2s extends _blake_js_1.BLAKE {
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constructor(opts = {}) {
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super(64, opts.dkLen === undefined ? 32 : opts.dkLen, opts, 32, 8, 8);
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// Internal state, same as SHA-256
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this.v0 = exports.B2S_IV[0] | 0;
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this.v1 = exports.B2S_IV[1] | 0;
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this.v2 = exports.B2S_IV[2] | 0;
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this.v3 = exports.B2S_IV[3] | 0;
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this.v4 = exports.B2S_IV[4] | 0;
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this.v5 = exports.B2S_IV[5] | 0;
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this.v6 = exports.B2S_IV[6] | 0;
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this.v7 = exports.B2S_IV[7] | 0;
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const keyLength = opts.key ? opts.key.length : 0;
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this.v0 ^= this.outputLen | (keyLength << 8) | (0x01 << 16) | (0x01 << 24);
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if (opts.salt) {
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const salt = (0, utils_js_1.u32)((0, utils_js_1.toBytes)(opts.salt));
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this.v4 ^= (0, utils_js_1.byteSwapIfBE)(salt[0]);
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this.v5 ^= (0, utils_js_1.byteSwapIfBE)(salt[1]);
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}
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if (opts.personalization) {
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const pers = (0, utils_js_1.u32)((0, utils_js_1.toBytes)(opts.personalization));
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this.v6 ^= (0, utils_js_1.byteSwapIfBE)(pers[0]);
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this.v7 ^= (0, utils_js_1.byteSwapIfBE)(pers[1]);
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}
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if (opts.key) {
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// Pad to blockLen and update
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const tmp = new Uint8Array(this.blockLen);
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tmp.set((0, utils_js_1.toBytes)(opts.key));
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this.update(tmp);
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}
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}
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get() {
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const { v0, v1, v2, v3, v4, v5, v6, v7 } = this;
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return [v0, v1, v2, v3, v4, v5, v6, v7];
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}
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// prettier-ignore
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set(v0, v1, v2, v3, v4, v5, v6, v7) {
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this.v0 = v0 | 0;
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this.v1 = v1 | 0;
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this.v2 = v2 | 0;
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this.v3 = v3 | 0;
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this.v4 = v4 | 0;
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this.v5 = v5 | 0;
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this.v6 = v6 | 0;
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this.v7 = v7 | 0;
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}
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compress(msg, offset, isLast) {
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const { h, l } = (0, _u64_js_1.fromBig)(BigInt(this.length));
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// prettier-ignore
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const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } = compress(_blake_js_1.SIGMA, offset, msg, 10, this.v0, this.v1, this.v2, this.v3, this.v4, this.v5, this.v6, this.v7, exports.B2S_IV[0], exports.B2S_IV[1], exports.B2S_IV[2], exports.B2S_IV[3], l ^ exports.B2S_IV[4], h ^ exports.B2S_IV[5], isLast ? ~exports.B2S_IV[6] : exports.B2S_IV[6], exports.B2S_IV[7]);
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this.v0 ^= v0 ^ v8;
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this.v1 ^= v1 ^ v9;
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this.v2 ^= v2 ^ v10;
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this.v3 ^= v3 ^ v11;
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this.v4 ^= v4 ^ v12;
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this.v5 ^= v5 ^ v13;
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this.v6 ^= v6 ^ v14;
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this.v7 ^= v7 ^ v15;
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}
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destroy() {
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this.destroyed = true;
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this.buffer32.fill(0);
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this.set(0, 0, 0, 0, 0, 0, 0, 0);
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}
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}
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exports.BLAKE2s = BLAKE2s;
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/**
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* BLAKE2s - optimized for 32-bit platforms. JS doesn't have uint64, so it's faster than BLAKE2b.
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* @param msg - message that would be hashed
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* @param opts - dkLen, key, salt, personalization
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*/
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exports.blake2s = (0, utils_js_1.wrapConstructorWithOpts)((opts) => new BLAKE2s(opts));
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//# sourceMappingURL=blake2s.js.map
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