BSIDES CACHE / CTF 2026 CRYPTO · EASY

Déjà Vu

Your message goes in. A secret is added. Encrypted data comes out. Can you recover the secret?

AES-128 16-byte blocks

Your message

Enter text or hex bytes. Empty input works too.

Ready when you are.

Ciphertext

Your encrypted output will appear here.

Hex output · 16 bytes per block