Uint8Array migration

ts/test-electron/context/Crypto_test.ts

@@ -0,0 +1,59 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { assert } from 'chai';
+import crypto from 'crypto';
+
+import {
+  CipherType,
+  HashType,
+  hash,
+  sign,
+  encrypt,
+  decrypt,
+} from '../../Crypto';
+
+describe('SignalContext.Crypto', () => {
+  describe('hash', () => {
+    it('returns SHA512 hash of the input', () => {
+      const result = hash(HashType.size512, Buffer.from('signal'));
+      assert.strictEqual(
+        Buffer.from(result).toString('base64'),
+        'WxneQjrfSlY95Bi+SAzDAr2cf3mxUXePeNYn6DILN4a8NFr9VelTbP5tGHdthi+' +
+          'mrJLqMZd1I6w8CxCnmJ/OFw=='
+      );
+    });
+  });
+
+  describe('sign', () => {
+    it('returns hmac SHA256 hash of the input', () => {
+      const result = sign(Buffer.from('secret'), Buffer.from('signal'));
+
+      assert.strictEqual(
+        Buffer.from(result).toString('base64'),
+        '5ewbITW27c1F7dluF9KwGcVQSxmZp6mpVhPj3ww1Sh8='
+      );
+    });
+  });
+
+  describe('encrypt+decrypt', () => {
+    it('returns original input', () => {
+      const iv = crypto.randomBytes(16);
+      const key = crypto.randomBytes(32);
+      const input = Buffer.from('plaintext');
+
+      const ciphertext = encrypt(CipherType.AES256CBC, {
+        key,
+        iv,
+        plaintext: input,
+      });
+      const plaintext = decrypt(CipherType.AES256CBC, {
+        key,
+        iv,
+        ciphertext,
+      });
+
+      assert.strictEqual(Buffer.from(plaintext).toString(), 'plaintext');
+    });
+  });
+});