AES Encrypt/Decrypt Online

AES encryption/decryption with 5 modes: CBC, ECB, CFB, OFB, CTR. Custom key and IV supported.

Plaintext
Encrypt结果 (Base64)

How to Use

  1. Select encrypt or decrypt mode.
  2. Choose AES mode (CBC/ECB/CFB/OFB/CTR).
  3. Enter key, and IV if required (non-ECB modes).
  4. Enter text or ciphertext and click encrypt/decrypt.

FAQ

Which AES mode should I use?

CBC is the most commonly used and secure. ECB is not secure and not recommended.

What key length is required?

AES-128: 16 chars, AES-256: 32 chars recommended.

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