AES Encrypt / Decrypt

AES (Advanced Encryption Standard) is the most widely used symmetric encryption algorithm in the world. AES-256-GCM specifically uses a 256-bit key (the strongest AES key size) with GCM (Galois/Counter Mode), which provides both encryption and authenticated integrity. This tool derives a cryptographic key from your passphrase using PBKDF2 (Password-Based Key Derivation Function 2) with a random salt, making it resistant to brute-force and dictionary attacks. The result is strong, authenticated encryption suitable for protecting sensitive text data.