Fully move to protobufjs
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Fedor Indutny
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46 changed files with 1133 additions and 12401 deletions
564
ts/test-electron/Crypto_test.ts
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564
ts/test-electron/Crypto_test.ts
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// Copyright 2015-2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { assert } from 'chai';
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import * as Curve from '../Curve';
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import * as Crypto from '../Crypto';
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import TSCrypto from '../textsecure/Crypto';
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describe('Crypto', () => {
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describe('encrypting and decrypting profile data', () => {
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const NAME_PADDED_LENGTH = 53;
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describe('encrypting and decrypting profile names', () => {
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it('pads, encrypts, decrypts, and unpads a short string', async () => {
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const name = 'Alice';
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const buffer = Crypto.bytesFromString(name);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfileName(buffer, key);
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assert(encrypted.byteLength === NAME_PADDED_LENGTH + 16 + 12);
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const { given, family } = await TSCrypto.decryptProfileName(
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Crypto.arrayBufferToBase64(encrypted),
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key
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);
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assert.strictEqual(family, null);
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assert.strictEqual(Crypto.stringFromBytes(given), name);
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});
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it('handles a given name of the max, 53 characters', async () => {
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const name = '01234567890123456789012345678901234567890123456789123';
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const buffer = Crypto.bytesFromString(name);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfileName(buffer, key);
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assert(encrypted.byteLength === NAME_PADDED_LENGTH + 16 + 12);
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const { given, family } = await TSCrypto.decryptProfileName(
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Crypto.arrayBufferToBase64(encrypted),
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key
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);
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assert.strictEqual(Crypto.stringFromBytes(given), name);
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assert.strictEqual(family, null);
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});
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it('handles family/given name of the max, 53 characters', async () => {
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const name =
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'01234567890123456789\u000001234567890123456789012345678912';
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const buffer = Crypto.bytesFromString(name);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfileName(buffer, key);
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assert(encrypted.byteLength === NAME_PADDED_LENGTH + 16 + 12);
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const { given, family } = await TSCrypto.decryptProfileName(
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Crypto.arrayBufferToBase64(encrypted),
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key
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);
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assert.strictEqual(
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Crypto.stringFromBytes(given),
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'01234567890123456789'
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);
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assert.strictEqual(
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family && Crypto.stringFromBytes(family),
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'01234567890123456789012345678912'
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);
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});
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it('handles a string with family/given name', async () => {
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const name = 'Alice\0Jones';
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const buffer = Crypto.bytesFromString(name);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfileName(buffer, key);
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assert(encrypted.byteLength === NAME_PADDED_LENGTH + 16 + 12);
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const { given, family } = await TSCrypto.decryptProfileName(
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Crypto.arrayBufferToBase64(encrypted),
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key
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);
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assert.strictEqual(Crypto.stringFromBytes(given), 'Alice');
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assert.strictEqual(family && Crypto.stringFromBytes(family), 'Jones');
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});
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it('works for empty string', async () => {
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const name = Crypto.bytesFromString('');
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const key = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfileName(name, key);
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assert(encrypted.byteLength === NAME_PADDED_LENGTH + 16 + 12);
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const { given, family } = await TSCrypto.decryptProfileName(
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Crypto.arrayBufferToBase64(encrypted),
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key
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);
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assert.strictEqual(family, null);
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assert.strictEqual(given.byteLength, 0);
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assert.strictEqual(Crypto.stringFromBytes(given), '');
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});
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});
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describe('encrypting and decrypting profile avatars', () => {
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it('encrypts and decrypts', async () => {
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const buffer = Crypto.bytesFromString('This is an avatar');
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const key = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfile(buffer, key);
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assert(encrypted.byteLength === buffer.byteLength + 16 + 12);
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const decrypted = await TSCrypto.decryptProfile(encrypted, key);
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assert(Crypto.constantTimeEqual(buffer, decrypted));
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});
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it('throws when decrypting with the wrong key', async () => {
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const buffer = Crypto.bytesFromString('This is an avatar');
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const key = Crypto.getRandomBytes(32);
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const badKey = Crypto.getRandomBytes(32);
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const encrypted = await TSCrypto.encryptProfile(buffer, key);
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assert(encrypted.byteLength === buffer.byteLength + 16 + 12);
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await assert.isRejected(
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TSCrypto.decryptProfile(encrypted, badKey),
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'Failed to decrypt profile data. Most likely the profile key has changed.'
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);
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});
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});
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});
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describe('generateRegistrationId', () => {
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it('generates an integer between 0 and 16383 (inclusive)', () => {
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for (let i = 0; i < 100; i += 1) {
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const id = Crypto.generateRegistrationId();
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assert.isAtLeast(id, 0);
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assert.isAtMost(id, 16383);
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assert(Number.isInteger(id));
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}
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});
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});
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describe('deriveSecrets', () => {
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it('derives key parts via HKDF', () => {
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const input = Crypto.getRandomBytes(32);
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const salt = Crypto.getRandomBytes(32);
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const info = Crypto.bytesFromString('Hello world');
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const result = Crypto.deriveSecrets(input, salt, info);
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assert.lengthOf(result, 3);
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result.forEach(part => {
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// This is a smoke test; HKDF is tested as part of @signalapp/signal-client.
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assert.instanceOf(part, ArrayBuffer);
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assert.strictEqual(part.byteLength, 32);
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});
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});
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});
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describe('accessKey/profileKey', () => {
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it('verification roundtrips', async () => {
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const profileKey = await Crypto.getRandomBytes(32);
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const accessKey = await Crypto.deriveAccessKey(profileKey);
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const verifier = await Crypto.getAccessKeyVerifier(accessKey);
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const correct = await Crypto.verifyAccessKey(accessKey, verifier);
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assert.strictEqual(correct, true);
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});
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});
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describe('deriveMasterKeyFromGroupV1', () => {
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const vectors = [
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{
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gv1: '00000000000000000000000000000000',
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masterKey:
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'dbde68f4ee9169081f8814eabc65523fea1359235c8cfca32b69e31dce58b039',
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},
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{
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gv1: '000102030405060708090a0b0c0d0e0f',
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masterKey:
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'70884f78f07a94480ee36b67a4b5e975e92e4a774561e3df84c9076e3be4b9bf',
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},
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{
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gv1: '7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f',
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masterKey:
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'e69bf7c183b288b4ea5745b7c52b651a61e57769fafde683a6fdf1240f1905f2',
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},
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{
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gv1: 'ffffffffffffffffffffffffffffffff',
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masterKey:
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'dd3a7de23d10f18b64457fbeedc76226c112a730e4b76112e62c36c4432eb37d',
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},
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];
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vectors.forEach((vector, index) => {
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it(`vector ${index}`, async () => {
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const gv1 = Crypto.hexToArrayBuffer(vector.gv1);
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const expectedHex = vector.masterKey;
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const actual = await Crypto.deriveMasterKeyFromGroupV1(gv1);
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const actualHex = Crypto.arrayBufferToHex(actual);
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assert.strictEqual(actualHex, expectedHex);
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});
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});
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});
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describe('symmetric encryption', () => {
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it('roundtrips', async () => {
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const message = 'this is my message';
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const plaintext = Crypto.bytesFromString(message);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await Crypto.encryptSymmetric(key, plaintext);
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const decrypted = await Crypto.decryptSymmetric(key, encrypted);
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const equal = Crypto.constantTimeEqual(plaintext, decrypted);
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if (!equal) {
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throw new Error('The output and input did not match!');
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}
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});
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it('roundtrip fails if nonce is modified', async () => {
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const message = 'this is my message';
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const plaintext = Crypto.bytesFromString(message);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await Crypto.encryptSymmetric(key, plaintext);
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const uintArray = new Uint8Array(encrypted);
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uintArray[2] += 2;
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try {
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await Crypto.decryptSymmetric(
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key,
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Crypto.typedArrayToArrayBuffer(uintArray)
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);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptSymmetric: Failed to decrypt; MAC verification failed'
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);
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return;
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}
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throw new Error('Expected error to be thrown');
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});
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it('roundtrip fails if mac is modified', async () => {
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const message = 'this is my message';
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const plaintext = Crypto.bytesFromString(message);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await Crypto.encryptSymmetric(key, plaintext);
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const uintArray = new Uint8Array(encrypted);
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uintArray[uintArray.length - 3] += 2;
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try {
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await Crypto.decryptSymmetric(
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key,
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Crypto.typedArrayToArrayBuffer(uintArray)
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);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptSymmetric: Failed to decrypt; MAC verification failed'
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);
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return;
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}
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throw new Error('Expected error to be thrown');
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});
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it('roundtrip fails if encrypted contents are modified', async () => {
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const message = 'this is my message';
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const plaintext = Crypto.bytesFromString(message);
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const key = Crypto.getRandomBytes(32);
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const encrypted = await Crypto.encryptSymmetric(key, plaintext);
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const uintArray = new Uint8Array(encrypted);
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uintArray[35] += 9;
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try {
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await Crypto.decryptSymmetric(
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key,
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Crypto.typedArrayToArrayBuffer(uintArray)
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);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptSymmetric: Failed to decrypt; MAC verification failed'
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);
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return;
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}
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throw new Error('Expected error to be thrown');
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});
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});
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describe('encrypted device name', () => {
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it('roundtrips', async () => {
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const deviceName = 'v1.19.0 on Windows 10';
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const identityKey = Curve.generateKeyPair();
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const encrypted = await Crypto.encryptDeviceName(
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deviceName,
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identityKey.pubKey
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);
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const decrypted = await Crypto.decryptDeviceName(
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encrypted,
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identityKey.privKey
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);
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assert.strictEqual(decrypted, deviceName);
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});
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it('fails if iv is changed', async () => {
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const deviceName = 'v1.19.0 on Windows 10';
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const identityKey = Curve.generateKeyPair();
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const encrypted = await Crypto.encryptDeviceName(
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deviceName,
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identityKey.pubKey
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);
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encrypted.syntheticIv = Crypto.getRandomBytes(16);
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try {
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await Crypto.decryptDeviceName(encrypted, identityKey.privKey);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptDeviceName: synthetic IV did not match'
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);
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}
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});
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});
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describe('attachment encryption', () => {
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it('roundtrips', async () => {
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const staticKeyPair = Curve.generateKeyPair();
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const message = 'this is my message';
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const plaintext = Crypto.bytesFromString(message);
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const path =
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'fa/facdf99c22945b1c9393345599a276f4b36ad7ccdc8c2467f5441b742c2d11fa';
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const encrypted = await Crypto.encryptAttachment(
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staticKeyPair.pubKey.slice(1),
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path,
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plaintext
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);
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const decrypted = await Crypto.decryptAttachment(
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staticKeyPair.privKey,
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path,
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encrypted
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);
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const equal = Crypto.constantTimeEqual(plaintext, decrypted);
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if (!equal) {
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throw new Error('The output and input did not match!');
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}
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});
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});
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describe('verifyHmacSha256', () => {
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it('rejects if their MAC is too short', async () => {
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const key = Crypto.getRandomBytes(32);
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const plaintext = Crypto.bytesFromString('Hello world');
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const ourMac = await Crypto.hmacSha256(key, plaintext);
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const theirMac = ourMac.slice(0, -1);
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let error;
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try {
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await Crypto.verifyHmacSha256(
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plaintext,
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key,
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theirMac,
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ourMac.byteLength
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);
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} catch (err) {
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error = err;
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}
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assert.instanceOf(error, Error);
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assert.strictEqual(error.message, 'Bad MAC length');
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});
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it('rejects if their MAC is too long', async () => {
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const key = Crypto.getRandomBytes(32);
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const plaintext = Crypto.bytesFromString('Hello world');
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const ourMac = await Crypto.hmacSha256(key, plaintext);
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const theirMac = Crypto.concatenateBytes(ourMac, new Uint8Array([0xff]));
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let error;
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try {
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await Crypto.verifyHmacSha256(
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plaintext,
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key,
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theirMac,
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ourMac.byteLength
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);
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} catch (err) {
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error = err;
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}
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assert.instanceOf(error, Error);
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assert.strictEqual(error.message, 'Bad MAC length');
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});
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it('rejects if our MAC is shorter than the specified length', async () => {
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const key = Crypto.getRandomBytes(32);
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const plaintext = Crypto.bytesFromString('Hello world');
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const ourMac = await Crypto.hmacSha256(key, plaintext);
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const theirMac = ourMac;
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let error;
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try {
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await Crypto.verifyHmacSha256(
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plaintext,
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key,
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theirMac,
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ourMac.byteLength + 1
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);
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} catch (err) {
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error = err;
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}
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assert.instanceOf(error, Error);
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assert.strictEqual(error.message, 'Bad MAC length');
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});
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it("rejects if the MACs don't match", async () => {
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const plaintext = Crypto.bytesFromString('Hello world');
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const ourKey = Crypto.getRandomBytes(32);
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const ourMac = await Crypto.hmacSha256(ourKey, plaintext);
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const theirKey = Crypto.getRandomBytes(32);
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const theirMac = await Crypto.hmacSha256(theirKey, plaintext);
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let error;
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try {
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await Crypto.verifyHmacSha256(
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plaintext,
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ourKey,
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theirMac,
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ourMac.byteLength
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);
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} catch (err) {
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error = err;
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}
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assert.instanceOf(error, Error);
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assert.strictEqual(error.message, 'Bad MAC');
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});
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it('resolves with undefined if the MACs match exactly', async () => {
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const key = Crypto.getRandomBytes(32);
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const plaintext = Crypto.bytesFromString('Hello world');
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const theirMac = await Crypto.hmacSha256(key, plaintext);
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const result = await Crypto.verifyHmacSha256(
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plaintext,
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key,
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theirMac,
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theirMac.byteLength
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);
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assert.isUndefined(result);
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});
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it('resolves with undefined if the first `length` bytes of the MACs match', async () => {
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const key = Crypto.getRandomBytes(32);
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const plaintext = Crypto.bytesFromString('Hello world');
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const theirMac = (await Crypto.hmacSha256(key, plaintext)).slice(0, -5);
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const result = await Crypto.verifyHmacSha256(
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plaintext,
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key,
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theirMac,
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theirMac.byteLength
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);
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assert.isUndefined(result);
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});
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});
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describe('uuidToArrayBuffer', () => {
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const { uuidToArrayBuffer } = Crypto;
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it('converts valid UUIDs to ArrayBuffers', () => {
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const expectedResult = Crypto.typedArrayToArrayBuffer(
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new Uint8Array([
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0x22,
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0x6e,
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0x44,
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0x02,
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0x7f,
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0xfc,
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0x45,
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0x43,
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0x85,
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0xc9,
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0x46,
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0x22,
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0xc5,
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0x0a,
|
||||
0x5b,
|
||||
0x14,
|
||||
])
|
||||
);
|
||||
|
||||
assert.deepEqual(
|
||||
uuidToArrayBuffer('226e4402-7ffc-4543-85c9-4622c50a5b14'),
|
||||
expectedResult
|
||||
);
|
||||
assert.deepEqual(
|
||||
uuidToArrayBuffer('226E4402-7FFC-4543-85C9-4622C50A5B14'),
|
||||
expectedResult
|
||||
);
|
||||
});
|
||||
|
||||
it('returns an empty ArrayBuffer for strings of the wrong length', () => {
|
||||
assert.deepEqual(uuidToArrayBuffer(''), new ArrayBuffer(0));
|
||||
assert.deepEqual(uuidToArrayBuffer('abc'), new ArrayBuffer(0));
|
||||
assert.deepEqual(
|
||||
uuidToArrayBuffer('032deadf0d5e4ee78da28e75b1dfb284'),
|
||||
new ArrayBuffer(0)
|
||||
);
|
||||
assert.deepEqual(
|
||||
uuidToArrayBuffer('deaed5eb-d983-456a-a954-9ad7a006b271aaaaaaaaaa'),
|
||||
new ArrayBuffer(0)
|
||||
);
|
||||
});
|
||||
});
|
||||
|
||||
describe('arrayBufferToUuid', () => {
|
||||
const { arrayBufferToUuid } = Crypto;
|
||||
|
||||
it('converts valid ArrayBuffers to UUID strings', () => {
|
||||
const buf = Crypto.typedArrayToArrayBuffer(
|
||||
new Uint8Array([
|
||||
0x22,
|
||||
0x6e,
|
||||
0x44,
|
||||
0x02,
|
||||
0x7f,
|
||||
0xfc,
|
||||
0x45,
|
||||
0x43,
|
||||
0x85,
|
||||
0xc9,
|
||||
0x46,
|
||||
0x22,
|
||||
0xc5,
|
||||
0x0a,
|
||||
0x5b,
|
||||
0x14,
|
||||
])
|
||||
);
|
||||
|
||||
assert.deepEqual(
|
||||
arrayBufferToUuid(buf),
|
||||
'226e4402-7ffc-4543-85c9-4622c50a5b14'
|
||||
);
|
||||
});
|
||||
|
||||
it('returns undefined if passed an all-zero buffer', () => {
|
||||
assert.isUndefined(arrayBufferToUuid(new ArrayBuffer(16)));
|
||||
});
|
||||
|
||||
it('returns undefined if passed the wrong number of bytes', () => {
|
||||
assert.isUndefined(arrayBufferToUuid(new ArrayBuffer(0)));
|
||||
assert.isUndefined(
|
||||
arrayBufferToUuid(
|
||||
Crypto.typedArrayToArrayBuffer(new Uint8Array([0x22]))
|
||||
)
|
||||
);
|
||||
assert.isUndefined(
|
||||
arrayBufferToUuid(
|
||||
Crypto.typedArrayToArrayBuffer(new Uint8Array(Array(17).fill(0x22)))
|
||||
)
|
||||
);
|
||||
});
|
||||
});
|
||||
});
|
||||
Loading…
Add table
Add a link
Reference in a new issue