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cKURE / FIELD TOOLS
File protection / Web Crypto

Secure File Vault

Encrypt a file with AES‑256‑GCM and a passphrase-derived key, or decrypt a vault file. File contents stay in this browser tab; the page does not upload, store, or send them.

Keep the passphrase safe. A lost passphrase cannot be recovered. Encryption uses a fresh random salt and nonce for each file. Large files need enough free browser memory.
AES‑256‑GCM · PBKDF2 / SHA‑256 · 600,000 ITERATIONS · NO THIRD-PARTY ASSETS