x4
Four-Layer Encryption
AES-GCM (256) with PBKDF2 hardening
Client-side only. Strong KDF, unique salts and IVs per layer, tamper-evident header.
AES-GCM 256
PBKDF2 (HMAC-SHA-256/512)
4 independent layers
Encrypt your message
Use long, unique passwords. Header is AAD-bound for tamper protection.
Encrypted output (self-describing)
Decrypt your message
Paste the text (starts with x4v2|...). Header is authenticated; altering it breaks decryption.