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

297 lines
11 KiB
TypeScript

import { fileContentEqual, setupDatabaseAndSynchronizer, supportDir, switchClient, objectsEqual, checkThrowAsync, msleep } from '../../testing/test-utils';
import Folder from '../../models/Folder';
import Note from '../../models/Note';
import Setting from '../../models/Setting';
import BaseItem from '../../models/BaseItem';
import MasterKey from '../../models/MasterKey';
import EncryptionService, { EncryptionMethod } from './EncryptionService';
import { setEncryptionEnabled } from '../synchronizer/syncInfoUtils';
let service: EncryptionService = null;
describe('services_EncryptionService', () => {
beforeEach(async () => {
await setupDatabaseAndSynchronizer(1);
await switchClient(1);
service = new EncryptionService();
BaseItem.encryptionService_ = service;
setEncryptionEnabled(true);
});
it('should encode and decode header', (async () => {
const header = {
encryptionMethod: EncryptionMethod.SJCL,
masterKeyId: '01234568abcdefgh01234568abcdefgh',
};
const encodedHeader = service.encodeHeader_(header);
const decodedHeader = service.decodeHeaderBytes_(encodedHeader);
delete decodedHeader.length;
expect(objectsEqual(header, decodedHeader)).toBe(true);
}));
it('should generate and decrypt a master key', (async () => {
const masterKey = await service.generateMasterKey('123456');
expect(!!masterKey.content).toBe(true);
let hasThrown = false;
try {
await service.decryptMasterKeyContent(masterKey, 'wrongpassword');
} catch (error) {
hasThrown = true;
}
expect(hasThrown).toBe(true);
const decryptedMasterKey = await service.decryptMasterKeyContent(masterKey, '123456');
expect(decryptedMasterKey.length).toBe(512);
}));
it('should upgrade a master key', (async () => {
// Create an old style master key
let masterKey = await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL2,
});
masterKey = await MasterKey.save(masterKey);
let upgradedMasterKey = await service.reencryptMasterKey(masterKey, '123456', '123456');
upgradedMasterKey = await MasterKey.save(upgradedMasterKey);
// Check that master key has been upgraded (different ciphertext)
expect(masterKey.content).not.toBe(upgradedMasterKey.content);
// Check that master key plain text is still the same
const plainTextOld = await service.decryptMasterKeyContent(masterKey, '123456');
const plainTextNew = await service.decryptMasterKeyContent(upgradedMasterKey, '123456');
expect(plainTextOld).toBe(plainTextNew);
// Check that old content can be decrypted with new master key
await service.loadMasterKey(masterKey, '123456', true);
const cipherText = await service.encryptString('some secret');
const plainTextFromOld = await service.decryptString(cipherText);
await service.loadMasterKey(upgradedMasterKey, '123456', true);
const plainTextFromNew = await service.decryptString(cipherText);
expect(plainTextFromOld).toBe(plainTextFromNew);
}));
it('should not upgrade master key if invalid password', (async () => {
const masterKey = await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL2,
});
await checkThrowAsync(async () => await service.reencryptMasterKey(masterKey, '777', '777'));
}));
it('should require a checksum only for old master keys', (async () => {
const masterKey = await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL2,
});
expect(!!masterKey.checksum).toBe(true);
expect(!!masterKey.content).toBe(true);
}));
it('should not require a checksum for new master keys', (async () => {
const masterKey = await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL4,
});
expect(!masterKey.checksum).toBe(true);
expect(!!masterKey.content).toBe(true);
const decryptedMasterKey = await service.decryptMasterKeyContent(masterKey, '123456');
expect(decryptedMasterKey.length).toBe(512);
}));
it('should throw an error if master key decryption fails', (async () => {
const masterKey = await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL4,
});
const hasThrown = await checkThrowAsync(async () => await service.decryptMasterKeyContent(masterKey, 'wrong'));
expect(hasThrown).toBe(true);
}));
it('should return the master keys that need an upgrade', (async () => {
const masterKey1 = await MasterKey.save(await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL2,
}));
const masterKey2 = await MasterKey.save(await service.generateMasterKey('123456', {
encryptionMethod: EncryptionMethod.SJCL,
}));
await MasterKey.save(await service.generateMasterKey('123456'));
const needUpgrade = service.masterKeysThatNeedUpgrading(await MasterKey.all());
expect(needUpgrade.length).toBe(2);
expect(needUpgrade.map(k => k.id).sort()).toEqual([masterKey1.id, masterKey2.id].sort());
}));
it('should encrypt and decrypt with a master key', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
const cipherText = await service.encryptString('some secret');
const plainText = await service.decryptString(cipherText);
expect(plainText).toBe('some secret');
// Test that a long string, that is going to be split into multiple chunks, encrypt
// and decrypt properly too.
let veryLongSecret = '';
for (let i = 0; i < service.chunkSize() * 3; i++) veryLongSecret += Math.floor(Math.random() * 9);
const cipherText2 = await service.encryptString(veryLongSecret);
const plainText2 = await service.decryptString(cipherText2);
expect(plainText2 === veryLongSecret).toBe(true);
}));
it('should decrypt various encryption methods', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
{
const cipherText = await service.encryptString('some secret', {
encryptionMethod: EncryptionMethod.SJCL2,
});
const plainText = await service.decryptString(cipherText);
expect(plainText).toBe('some secret');
const header = await service.decodeHeaderString(cipherText);
expect(header.encryptionMethod).toBe(EncryptionMethod.SJCL2);
}
{
const cipherText = await service.encryptString('some secret', {
encryptionMethod: EncryptionMethod.SJCL3,
});
const plainText = await service.decryptString(cipherText);
expect(plainText).toBe('some secret');
const header = await service.decodeHeaderString(cipherText);
expect(header.encryptionMethod).toBe(EncryptionMethod.SJCL3);
}
}));
it('should fail to decrypt if master key not present', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
const cipherText = await service.encryptString('some secret');
await service.unloadMasterKey(masterKey);
const hasThrown = await checkThrowAsync(async () => await service.decryptString(cipherText));
expect(hasThrown).toBe(true);
}));
it('should fail to decrypt if data tampered with', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
let cipherText = await service.encryptString('some secret');
cipherText += 'ABCDEFGHIJ';
const hasThrown = await checkThrowAsync(async () => await service.decryptString(cipherText));
expect(hasThrown).toBe(true);
}));
it('should encrypt and decrypt notes and folders', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
const folder = await Folder.save({ title: 'folder' });
const note = await Note.save({ title: 'encrypted note', body: 'something', parent_id: folder.id });
const serialized = await Note.serializeForSync(note);
const deserialized = Note.filter(await Note.unserialize(serialized));
// Check that required properties are not encrypted
expect(deserialized.id).toBe(note.id);
expect(deserialized.parent_id).toBe(note.parent_id);
expect(deserialized.updated_time).toBe(note.updated_time);
// Check that at least title and body are encrypted
expect(!deserialized.title).toBe(true);
expect(!deserialized.body).toBe(true);
// Check that encrypted data is there
expect(!!deserialized.encryption_cipher_text).toBe(true);
const encryptedNote = await Note.save(deserialized);
const decryptedNote = await Note.decrypt(encryptedNote);
expect(decryptedNote.title).toBe(note.title);
expect(decryptedNote.body).toBe(note.body);
expect(decryptedNote.id).toBe(note.id);
expect(decryptedNote.parent_id).toBe(note.parent_id);
}));
it('should encrypt and decrypt files', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
const sourcePath = `${supportDir}/photo.jpg`;
const encryptedPath = `${Setting.value('tempDir')}/photo.crypted`;
const decryptedPath = `${Setting.value('tempDir')}/photo.jpg`;
await service.encryptFile(sourcePath, encryptedPath);
await service.decryptFile(encryptedPath, decryptedPath);
expect(fileContentEqual(sourcePath, encryptedPath)).toBe(false);
expect(fileContentEqual(sourcePath, decryptedPath)).toBe(true);
}));
it('should encrypt invalid UTF-8 data', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
// First check that we can replicate the error with the old encryption method
service.defaultEncryptionMethod_ = EncryptionMethod.SJCL;
const hasThrown = await checkThrowAsync(async () => await service.encryptString('🐶🐶🐶'.substr(0, 5)));
expect(hasThrown).toBe(true);
// Now check that the new one fixes the problem
service.defaultEncryptionMethod_ = EncryptionMethod.SJCL1a;
const cipherText = await service.encryptString('🐶🐶🐶'.substr(0, 5));
const plainText = await service.decryptString(cipherText);
expect(plainText).toBe('🐶🐶🐶'.substr(0, 5));
}));
it('should check if a master key is loaded', (async () => {
let masterKey = await service.generateMasterKey('123456');
masterKey = await MasterKey.save(masterKey);
await service.loadMasterKey(masterKey, '123456', true);
expect(service.isMasterKeyLoaded(masterKey)).toBe(true);
await msleep(1);
// If the master key is modified afterwards it should report that it is
// *not* loaded since it doesn't have this new version.
masterKey = await MasterKey.save(masterKey);
expect(service.isMasterKeyLoaded(masterKey)).toBe(false);
}));
});