306 lines
12 KiB
Plaintext
306 lines
12 KiB
Plaintext
import assert from './_assert.js';
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import { toBytes, u8, u32 } from './utils.js';
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import { blake2b } from './blake2b.js';
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import u64 from './_u64.js';
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// Experimental implementation of argon2.
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// Could be broken & slow. May be removed at a later time.
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// RFC 9106
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var Types;
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(function (Types) {
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Types[Types["Argond2d"] = 0] = "Argond2d";
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Types[Types["Argon2i"] = 1] = "Argon2i";
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Types[Types["Argon2id"] = 2] = "Argon2id";
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})(Types || (Types = {}));
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const ARGON2_SYNC_POINTS = 4;
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const toBytesOptional = (buf) => (buf !== undefined ? toBytes(buf) : new Uint8Array([]));
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function mul(a, b) {
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const aL = a & 0xffff;
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const aH = a >>> 16;
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const bL = b & 0xffff;
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const bH = b >>> 16;
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const ll = Math.imul(aL, bL);
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const hl = Math.imul(aH, bL);
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const lh = Math.imul(aL, bH);
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const hh = Math.imul(aH, bH);
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const BUF = ((ll >>> 16) + (hl & 0xffff) + lh) | 0;
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const h = ((hl >>> 16) + (BUF >>> 16) + hh) | 0;
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return { h, l: (BUF << 16) | (ll & 0xffff) };
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}
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function relPos(areaSize, relativePos) {
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// areaSize - 1 - ((areaSize * ((relativePos ** 2) >>> 32)) >>> 32)
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return areaSize - 1 - mul(areaSize, mul(relativePos, relativePos).h).h;
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}
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function mul2(a, b) {
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// 2 * a * b (via shifts)
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const { h, l } = mul(a, b);
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return { h: ((h << 1) | (l >>> 31)) & 4294967295, l: (l << 1) & 4294967295 };
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}
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function blamka(Ah, Al, Bh, Bl) {
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const { h: Ch, l: Cl } = mul2(Al, Bl);
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// A + B + (2 * A * B)
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const Rll = u64.add3L(Al, Bl, Cl);
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return { h: u64.add3H(Rll, Ah, Bh, Ch), l: Rll | 0 };
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}
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// Temporary block buffer
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const BUF = new Uint32Array(256);
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function G(a, b, c, d) {
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let Al = BUF[2 * a], Ah = BUF[2 * a + 1]; // prettier-ignore
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let Bl = BUF[2 * b], Bh = BUF[2 * b + 1]; // prettier-ignore
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let Cl = BUF[2 * c], Ch = BUF[2 * c + 1]; // prettier-ignore
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let Dl = BUF[2 * d], Dh = BUF[2 * d + 1]; // prettier-ignore
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({ h: Ah, l: Al } = blamka(Ah, Al, Bh, Bl));
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({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
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({ Dh, Dl } = { Dh: u64.rotr32H(Dh, Dl), Dl: u64.rotr32L(Dh, Dl) });
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({ h: Ch, l: Cl } = blamka(Ch, Cl, Dh, Dl));
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({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
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({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 24), Bl: u64.rotrSL(Bh, Bl, 24) });
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({ h: Ah, l: Al } = blamka(Ah, Al, Bh, Bl));
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({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
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({ Dh, Dl } = { Dh: u64.rotrSH(Dh, Dl, 16), Dl: u64.rotrSL(Dh, Dl, 16) });
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({ h: Ch, l: Cl } = blamka(Ch, Cl, Dh, Dl));
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({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
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({ Bh, Bl } = { Bh: u64.rotrBH(Bh, Bl, 63), Bl: u64.rotrBL(Bh, Bl, 63) });
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(BUF[2 * a] = Al), (BUF[2 * a + 1] = Ah);
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(BUF[2 * b] = Bl), (BUF[2 * b + 1] = Bh);
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(BUF[2 * c] = Cl), (BUF[2 * c + 1] = Ch);
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(BUF[2 * d] = Dl), (BUF[2 * d + 1] = Dh);
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}
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// prettier-ignore
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function P(v00, v01, v02, v03, v04, v05, v06, v07, v08, v09, v10, v11, v12, v13, v14, v15) {
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G(v00, v04, v08, v12);
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G(v01, v05, v09, v13);
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G(v02, v06, v10, v14);
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G(v03, v07, v11, v15);
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G(v00, v05, v10, v15);
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G(v01, v06, v11, v12);
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G(v02, v07, v08, v13);
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G(v03, v04, v09, v14);
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}
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function block(x, xPos, yPos, outPos, needXor) {
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for (let i = 0; i < 256; i++)
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BUF[i] = x[xPos + i] ^ x[yPos + i];
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// columns
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for (let i = 0; i < 128; i += 16) {
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// prettier-ignore
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P(i, i + 1, i + 2, i + 3, i + 4, i + 5, i + 6, i + 7, i + 8, i + 9, i + 10, i + 11, i + 12, i + 13, i + 14, i + 15);
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}
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// rows
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for (let i = 0; i < 16; i += 2) {
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// prettier-ignore
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P(i, i + 1, i + 16, i + 17, i + 32, i + 33, i + 48, i + 49, i + 64, i + 65, i + 80, i + 81, i + 96, i + 97, i + 112, i + 113);
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}
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if (needXor)
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for (let i = 0; i < 256; i++)
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x[outPos + i] ^= BUF[i] ^ x[xPos + i] ^ x[yPos + i];
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else
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for (let i = 0; i < 256; i++)
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x[outPos + i] = BUF[i] ^ x[xPos + i] ^ x[yPos + i];
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}
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// Variable-Length Hash Function H'
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function Hp(A, dkLen) {
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const A8 = u8(A);
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const T = new Uint32Array(1);
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const T8 = u8(T);
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T[0] = dkLen;
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// Fast path
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if (dkLen <= 64)
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return blake2b.create({ dkLen }).update(T8).update(A8).digest();
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const out = new Uint8Array(dkLen);
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let V = blake2b.create({}).update(T8).update(A8).digest();
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let pos = 0;
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// First block
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out.set(V.subarray(0, 32));
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pos += 32;
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// Rest blocks
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for (; dkLen - pos > 64; pos += 32)
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out.set((V = blake2b(V)).subarray(0, 32), pos);
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// Last block
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out.set(blake2b(V, { dkLen: dkLen - pos }), pos);
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return u32(out);
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}
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function indexAlpha(r, s, laneLen, segmentLen, index, randL, sameLane = false) {
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let area;
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if (0 == r) {
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if (0 == s)
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area = index - 1;
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else if (sameLane)
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area = s * segmentLen + index - 1;
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else
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area = s * segmentLen + (index == 0 ? -1 : 0);
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}
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else if (sameLane)
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area = laneLen - segmentLen + index - 1;
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else
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area = laneLen - segmentLen + (index == 0 ? -1 : 0);
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const startPos = r !== 0 && s !== ARGON2_SYNC_POINTS - 1 ? (s + 1) * segmentLen : 0;
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const rel = relPos(area, randL);
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// NOTE: check about overflows here
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// absPos = (startPos + relPos) % laneLength;
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return (startPos + rel) % laneLen;
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}
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function argon2Init(type, password, salt, opts) {
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password = toBytes(password);
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salt = toBytes(salt);
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let { p, dkLen, m, t, version, key, personalization, maxmem, onProgress } = {
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...opts,
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version: opts.version || 0x13,
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dkLen: opts.dkLen || 32,
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maxmem: 2 ** 32,
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};
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// Validation
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assert.number(p);
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assert.number(dkLen);
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assert.number(m);
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assert.number(t);
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assert.number(version);
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if (dkLen < 4 || dkLen >= 2 ** 32)
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throw new Error('Argon2: dkLen should be at least 4 bytes');
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if (dkLen < 1 || p >= 2 ** 32)
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throw new Error('Argon2: p (paralllelism) should be at least 1');
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if (dkLen < 1 || p >= 2 ** 32)
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throw new Error('Argon2: t (iterations) should be at least 1');
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if (m < 8 * p)
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throw new Error(`Argon2: memory should be at least 8*p bytes`);
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if (version !== 16 && version !== 19)
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throw new Error(`Argon2: unknown version=${version}`);
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password = toBytes(password);
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if (password.length < 0 || password.length >= 2 ** 32)
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throw new Error('Argon2: password should be less than 4 GB');
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salt = toBytes(salt);
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if (salt.length < 8)
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throw new Error('Argon2: salt should be at least 8 bytes');
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key = toBytesOptional(key);
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personalization = toBytesOptional(personalization);
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if (onProgress !== undefined && typeof onProgress !== 'function')
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throw new Error('progressCb should be function');
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// Params
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const lanes = p;
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// m' = 4 * p * floor (m / 4p)
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const mP = 4 * p * Math.floor(m / (ARGON2_SYNC_POINTS * p));
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//q = m' / p columns
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const laneLen = Math.floor(mP / p);
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const segmentLen = Math.floor(laneLen / ARGON2_SYNC_POINTS);
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// H0
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const h = blake2b.create({});
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const BUF = new Uint32Array(1);
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const BUF8 = u8(BUF);
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for (const i of [p, dkLen, m, t, version, type]) {
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if (i < 0 || i >= 2 ** 32)
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throw new Error(`Argon2: wrong parameter=${i}, expected uint32`);
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BUF[0] = i;
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h.update(BUF8);
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}
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for (let i of [password, salt, key, personalization]) {
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BUF[0] = i.length;
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h.update(BUF8).update(i);
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}
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const H0 = new Uint32Array(18);
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const H0_8 = u8(H0);
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h.digestInto(H0_8);
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// 256 u32 = 1024 (BLOCK_SIZE)
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const memUsed = mP * 256;
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if (memUsed < 0 || memUsed >= 2 ** 32 || memUsed > maxmem) {
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throw new Error(`Argon2: wrong params (memUsed=${memUsed} maxmem=${maxmem}), should be less than 2**32`);
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}
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const B = new Uint32Array(memUsed);
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// Fill first blocks
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for (let l = 0; l < p; l++) {
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const i = 256 * laneLen * l;
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// B[i][0] = H'^(1024)(H_0 || LE32(0) || LE32(i))
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H0[17] = l;
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H0[16] = 0;
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B.set(Hp(H0, 1024), i);
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// B[i][1] = H'^(1024)(H_0 || LE32(1) || LE32(i))
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H0[16] = 1;
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B.set(Hp(H0, 1024), i + 256);
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}
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let perBlock = () => { };
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if (onProgress) {
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const totalBlock = t * ARGON2_SYNC_POINTS * p * segmentLen;
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// Invoke callback if progress changes from 10.01 to 10.02
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// Allows to draw smooth progress bar on up to 8K screen
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const callbackPer = Math.max(Math.floor(totalBlock / 10000), 1);
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let blockCnt = 0;
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perBlock = () => {
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blockCnt++;
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if (onProgress && (!(blockCnt % callbackPer) || blockCnt === totalBlock))
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onProgress(blockCnt / totalBlock);
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};
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}
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return { type, mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock };
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}
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function argon2Output(B, p, laneLen, dkLen) {
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const B_final = new Uint32Array(256);
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for (let l = 0; l < p; l++)
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for (let j = 0; j < 256; j++)
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B_final[j] ^= B[256 * (laneLen * l + laneLen - 1) + j];
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return u8(Hp(B_final, dkLen));
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}
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function processBlock(B, address, l, r, s, index, laneLen, segmentLen, lanes, offset, prev, dataIndependent, needXor) {
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if (offset % laneLen)
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prev = offset - 1;
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let randL, randH;
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if (dataIndependent) {
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if (index % 128 === 0) {
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address[256 + 12]++;
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block(address, 256, 2 * 256, 0, false);
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block(address, 0, 2 * 256, 0, false);
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}
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randL = address[2 * (index % 128)];
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randH = address[2 * (index % 128) + 1];
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}
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else {
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const T = 256 * prev;
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randL = B[T];
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randH = B[T + 1];
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}
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// address block
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const refLane = r === 0 && s === 0 ? l : randH % lanes;
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const refPos = indexAlpha(r, s, laneLen, segmentLen, index, randL, refLane == l);
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const refBlock = laneLen * refLane + refPos;
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// B[i][j] = G(B[i][j-1], B[l][z])
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block(B, 256 * prev, 256 * refBlock, offset * 256, needXor);
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}
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function argon2(type, password, salt, opts) {
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const { mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock } = argon2Init(type, password, salt, opts);
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// Pre-loop setup
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// [address, input, zero_block] format so we can pass single U32 to block function
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const address = new Uint32Array(3 * 256);
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address[256 + 6] = mP;
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address[256 + 8] = t;
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address[256 + 10] = type;
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for (let r = 0; r < t; r++) {
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const needXor = r !== 0 && version === 0x13;
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address[256 + 0] = r;
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for (let s = 0; s < ARGON2_SYNC_POINTS; s++) {
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address[256 + 4] = s;
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const dataIndependent = type == Types.Argon2i || (type == Types.Argon2id && r === 0 && s < 2);
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for (let l = 0; l < p; l++) {
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address[256 + 2] = l;
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address[256 + 12] = 0;
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let startPos = 0;
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if (r === 0 && s === 0) {
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startPos = 2;
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if (dataIndependent) {
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address[256 + 12]++;
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block(address, 256, 2 * 256, 0, false);
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block(address, 0, 2 * 256, 0, false);
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}
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}
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// current block postion
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let offset = l * laneLen + s * segmentLen + startPos;
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// previous block position
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let prev = offset % laneLen ? offset - 1 : offset + laneLen - 1;
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for (let index = startPos; index < segmentLen; index++, offset++, prev++) {
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perBlock();
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processBlock(B, address, l, r, s, index, laneLen, segmentLen, lanes, offset, prev, dataIndependent, needXor);
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}
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}
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}
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}
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return argon2Output(B, p, laneLen, dkLen);
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}
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export const argon2d = (password, salt, opts) => argon2(Types.Argond2d, password, salt, opts);
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export const argon2i = (password, salt, opts) => argon2(Types.Argon2i, password, salt, opts);
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export const argon2id = (password, salt, opts) => argon2(Types.Argon2id, password, salt, opts);
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//# sourceMappingURL=argon2.js.map |