Crypto Lab

Hashes + HMAC + classic ciphers + modern encryption (client-side).

Input

Output

Mode

Algorithm

Output format

HMAC key (only for HMAC mode)

MD5 is legacy and not available in browser WebCrypto. Blowfish also requires a library; AES-GCM below is the recommended modern option.

ROT-N (e.g., ROT13 / ROT9)

Passphrase (used to derive a key)

Encrypt output format: JSON with salt+iv+ciphertext (Base64). Keep it for decrypt.