Encrypt a Message
Lock text behind a password with AES-256-GCM, then send the blob over any channel you like.
Message
Password
Higher is slower to guess — and slower to open.
How this works
- Your password is stretched with PBKDF2-SHA256 (310,000 iterations) over a fresh 16-byte salt.
- The derived 256-bit key encrypts the text with AES-GCM, which also authenticates it — tampering makes decryption fail rather than return garbage.
- The blob is
magic · salt · nonce · iterations · ciphertext, base64 encoded, so it carries everything needed to open it except the password. - Strength comes entirely from the password. A short one is guessable no matter how good the cipher is.