feat: encryption

server/src/utils/auth.ts

@@ -1,4 +1,5 @@
 import bcrypt from "bcrypt";
+import crypto from 'crypto';
 
 export const hashPassword = (password: string): Promise<string> => {
     return new Promise((resolve, reject) => {
@@ -19,4 +20,12 @@ export const hashPassword = (password: string): Promise<string> => {
 // password from frontend and hash from database
 export const comparePassword = (password: string, hash: string): Promise<boolean> => {
     return bcrypt.compare(password, hash)
-}
+}
+
+const encrypt = (text: string): string => {
+    const iv = crypto.randomBytes(IV_LENGTH);
+    const cipher = crypto.createCipheriv(ALGORITHM, Buffer.from(ENCRYPTION_KEY), iv);
+    let encrypted = cipher.update(text, 'utf8', 'hex');
+    encrypted += cipher.final('hex');
+    return `${iv.toString('hex')}:${encrypted}`;
+};