moved all sources to src directory

src/test/cbc_encryption.js

@@ -0,0 +1,14 @@
+const test = require('tape');
+const data_encryption = require('../services/data_encryption');
+
+test('encrypt & decrypt', t => {
+    const dataKey = [1,2,3];
+    const iv = [4,5,6];
+    const plainText = "Hello World!";
+
+    const cipherText = data_encryption.encrypt(dataKey, iv, plainText);
+    const decodedPlainText = data_encryption.decrypt(dataKey, iv, cipherText);
+
+    t.equal(decodedPlainText, plainText);
+    t.end();
+});