Encrypt and decrypt text using AES-256 military-grade encryption. Your data never leaves your browser — all processing happens locally.
AES (Advanced Encryption Standard) is the gold standard for symmetric encryption, adopted by the U.S. government and used worldwide for protecting classified information. AES-256 uses a 256-bit key, making it virtually unbreakable by brute force — even a supercomputer would take billions of years to crack it.
AES is a block cipher that encrypts data in 128-bit blocks. In CBC (Cipher Block Chaining) mode, each block is XORed with the previous ciphertext block before encryption, ensuring identical plaintext blocks produce different ciphertext. A random Initialization Vector (IV) is used for the first block.
| Algorithm | Key Size | Status | Speed |
|---|---|---|---|
| AES-256 | 256 bits | ✅ Military-grade | Very Fast |
| DES | 56 bits | ❌ Broken | Fast |
| 3DES | 168 bits | ⚠️ Deprecated | Slow |
| Blowfish | Up to 448 bits | ✅ Secure | Fast |
| ChaCha20 | 256 bits | ✅ Modern | Very Fast |
No. All encryption and decryption happens entirely in your browser using JavaScript's CryptoJS library. Your data, password, and encrypted text are never transmitted to any server.
AES encryption is one-way without the key — if you lose the password, the encrypted data cannot be recovered. We never store your password, so there's no "forgot password" option. Always store your passwords safely.
No. AES-256 has 2^256 possible key combinations. Even with every computer on Earth working together, it would take longer than the age of the universe to brute-force an AES-256 key. However, weak passwords can be guessed — always use a strong, unique password.