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joplin/packages/lib/services/e2ee/crypto.test.ts

107 lines
4.2 KiB
TypeScript

import { afterAllCleanUp, expectNotThrow, setupDatabaseAndSynchronizer, switchClient } from '../../testing/test-utils';
import { runIntegrationTests } from './cryptoTestUtils';
import crypto from './crypto';
describe('e2ee/crypto', () => {
beforeEach(async () => {
jest.useRealTimers();
await setupDatabaseAndSynchronizer(1);
await switchClient(1);
});
afterAll(async () => {
await afterAllCleanUp();
});
it('should encrypt and decrypt data from different devices', (async () => {
await expectNotThrow(async () => runIntegrationTests(true));
}));
it('should not generate new nonce if counter does not overflow (empty counter)', (async () => {
jest.useFakeTimers();
const nonce = await crypto.generateNonce(new Uint8Array(36));
expect(nonce.subarray(-8)).toEqual(new Uint8Array(8));
const nonCounterPart = nonce.slice(0, 28);
jest.advanceTimersByTime(1);
await crypto.increaseNonce(nonce);
// Counter should have expected value
expect(nonce.subarray(-8)).toEqual(new Uint8Array([0, 0, 0, 0, 0, 0, 0, 1]));
// Non-counter part should stay the same
expect(nonce.subarray(0, 28)).toEqual(nonCounterPart);
jest.advanceTimersByTime(1);
await crypto.increaseNonce(nonce);
// Counter should have expected value
expect(nonce.subarray(-8)).toEqual(new Uint8Array([0, 0, 0, 0, 0, 0, 0, 2]));
// Non-counter part should stay the same
expect(nonce.subarray(0, 28)).toEqual(nonCounterPart);
}));
it.each([
[[248, 249, 250, 251, 255, 0, 255, 126], [248, 249, 250, 251, 255, 0, 255, 127]],
[[248, 249, 250, 251, 0, 255, 0, 126], [248, 249, 250, 251, 0, 255, 0, 127]],
[[248, 249, 250, 251, 252, 253, 254, 126], [248, 249, 250, 251, 252, 253, 254, 127]],
[[248, 249, 250, 251, 252, 253, 254, 254], [248, 249, 250, 251, 252, 253, 254, 255]],
[[248, 249, 250, 251, 252, 253, 254, 255], [248, 249, 250, 251, 252, 253, 255, 0]],
[[248, 249, 250, 251, 252, 253, 255, 0], [248, 249, 250, 251, 252, 253, 255, 1]],
[[249, 250, 251, 252, 253, 254, 255, 255], [249, 250, 251, 252, 253, 255, 0, 0]],
[[253, 254, 255, 255, 255, 255, 255, 255], [253, 255, 0, 0, 0, 0, 0, 0]],
[[254, 255, 255, 255, 255, 255, 255, 255], [255, 0, 0, 0, 0, 0, 0, 0]],
])('should not generate new nonce if counter does not overflow', (async (counterBeforeIncrease, counterAfterIncrease) => {
jest.useFakeTimers();
const nonce = await crypto.generateNonce(new Uint8Array(36));
expect(nonce.subarray(-8)).toEqual(new Uint8Array(8));
const nonCounterPart = nonce.slice(0, 28);
jest.advanceTimersByTime(1);
nonce.set(new Uint8Array(counterBeforeIncrease), 28);
await crypto.increaseNonce(nonce);
// Counter should have expected value
expect(nonce.subarray(-8)).toEqual(new Uint8Array(counterAfterIncrease));
// Non-counter part should stay the same
expect(nonce.subarray(0, 28)).toEqual(nonCounterPart);
}));
it.each([0, 1, 0xFE, 0xFF, 0x100, 0xFFFE, 0xFFFF, 0x10000, Date.now()],
)('should generate new nonce if counter overflow', (async (mockedTimestamp) => {
jest.useFakeTimers({ now: mockedTimestamp });
const nonce = await crypto.generateNonce(new Uint8Array(36));
expect(nonce.subarray(-8)).toEqual(new Uint8Array(8));
const nonCounterPart = nonce.slice(0, 28);
const randomPart = nonce.slice(0, 21);
const timestampPart = nonce.slice(21, 28);
jest.advanceTimersByTime(1);
await crypto.increaseNonce(nonce);
// Counter should have expected value
expect(nonce.subarray(-8)).toEqual(new Uint8Array([0, 0, 0, 0, 0, 0, 0, 1]));
// Non-counter part should stay the same
expect(nonce.subarray(0, 28)).toEqual(nonCounterPart);
jest.advanceTimersByTime(1);
nonce.set(new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]), 28);
await crypto.increaseNonce(nonce);
// Counter should have expected value
expect(nonce.subarray(-8)).toEqual(new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0]));
// Random part should be changed
expect(nonce.subarray(0, 21)).not.toEqual(randomPart);
// Timestamp part should have expected value
let carry = 2;
for (let i = 0; i < timestampPart.length; i++) {
const sum = timestampPart[i] + carry;
timestampPart[i] = sum % 256;
carry = Math.floor(sum / 256);
if (carry === 0) {
break;
}
}
expect(nonce.subarray(21, 28)).toEqual(timestampPart);
}));
});