Create encryption.js

src/security/encryption.js

@@ -0,0 +1,27 @@
+// src/security/encryption.js
+const crypto = require('crypto');
+require('dotenv').config();
+
+const ALGORITHM = 'aes-256-cbc';
+const KEY = crypto.scryptSync(process.env.ENCRYPTION_KEY, 'salt', 32);
+const IV_LENGTH = 16; // For AES, this is always 16
+
+function encrypt(text) {
+    const iv = crypto.randomBytes(IV_LENGTH);
+    const cipher = crypto.createCipheriv(ALGORITHM, KEY, iv);
+    let encrypted = cipher.update(text, 'utf8', 'hex');
+    encrypted += cipher.final('hex');
+    return iv.toString('hex') + ':' + encrypted;
+}
+
+function decrypt(encryptedText) {
+    const parts = encryptedText.split(':');
+    const iv = Buffer.from(parts.shift(), 'hex');
+    const encryptedTextBuffer = Buffer.from(parts.join(':'), 'hex');
+    const decipher = crypto.createDecipheriv(ALGORITHM, KEY, iv);
+    let decrypted = decipher.update(encryptedTextBuffer, 'hex', 'utf8');
+    decrypted += decipher.final('utf8');
+    return decrypted;
+}
+
+module.exports = { encrypt, decrypt };