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