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web crypto aes encryption and random bytes

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This commit is contained in:
Kyle Spearrin
2018-04-18 00:24:17 -04:00
parent 2e58314759
commit 680fbff306
2 changed files with 84 additions and 0 deletions
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56
src/services/webCryptoFunction.service.spec.ts
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@@ -65,6 +65,54 @@ describe('WebCrypto Function Service', () => {
testHmac(true, 'sha256', sha256Mac);
testHmac(true, 'sha512', sha512Mac);
});
describe('aesEncrypt', () => {
it('should successfully aes 256 encrypt data', async () => {
const webCryptoFunctionService = getWebCryptoFunctionService();
const iv = makeStaticByteArray(16);
const key = makeStaticByteArray(32);
const data = UtilsService.fromUtf8ToArray('EncryptMe!');
const encValue = await webCryptoFunctionService.aesEncrypt(data.buffer, iv.buffer, key.buffer);
expect(UtilsService.fromBufferToB64(encValue)).toBe('ByUF8vhyX4ddU9gcooznwA==');
});
});
describe('aesDecryptSmall', () => {
it('should successfully aes 256 decrypt data', async () => {
const webCryptoFunctionService = getWebCryptoFunctionService();
const iv = makeStaticByteArray(16);
const key = makeStaticByteArray(32);
const data = UtilsService.fromB64ToArray('ByUF8vhyX4ddU9gcooznwA==');
const decValue = await webCryptoFunctionService.aesDecryptSmall(data.buffer, iv.buffer, key.buffer);
expect(UtilsService.fromBufferToUtf8(decValue)).toBe('EncryptMe!');
});
});
describe('aesDecryptLarge', () => {
it('should successfully aes 256 decrypt data', async () => {
const webCryptoFunctionService = getWebCryptoFunctionService();
const iv = makeStaticByteArray(16);
const key = makeStaticByteArray(32);
const data = UtilsService.fromB64ToArray('ByUF8vhyX4ddU9gcooznwA==');
const decValue = await webCryptoFunctionService.aesDecryptLarge(data.buffer, iv.buffer, key.buffer);
expect(UtilsService.fromBufferToUtf8(decValue)).toBe('EncryptMe!');
});
});
describe('randomBytes', () => {
it('should make a value of the correct length', async () => {
const webCryptoFunctionService = getWebCryptoFunctionService();
const randomData = await webCryptoFunctionService.randomBytes(16);
expect(randomData.byteLength).toBe(16);
});
it('should not make the same value twice', async () => {
const webCryptoFunctionService = getWebCryptoFunctionService();
const randomData = await webCryptoFunctionService.randomBytes(16);
const randomData2 = await webCryptoFunctionService.randomBytes(16);
expect(randomData.byteLength === randomData2.byteLength && randomData !== randomData2).toBeTruthy();
});
});
});
function testPbkdf2(edge: boolean, algorithm: 'sha256' | 'sha512', regularKey: string,
@@ -149,6 +197,14 @@ function getWebCryptoFunctionService(edge = false) {
return new WebCryptoFunctionService(window, platformUtilsService);
}
function makeStaticByteArray(length: number) {
const arr = new Uint8Array(length);
for (let i = 0; i < length; i++) {
arr[i] = i;
}
return arr;
}
class BrowserPlatformUtilsService implements PlatformUtilsService {
identityClientId: string;
getDevice: () => DeviceType;