AES-256 Encrypt / Decrypt
Encrypt or decrypt text using AES-256-GCM with PBKDF2-SHA256 key derivation. All operations run entirely in your browser — your text and passphrase never leave this page.
Security: Keys are derived from your passphrase using PBKDF2-SHA256 (100,000 iterations) with a random 16-byte salt. Each encryption uses a unique random 12-byte IV. The encrypted blob encodes salt + IV + ciphertext as a single Base64 string. Nothing is sent to any server.
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