Four required passwords
Each vault lock requires four passwords. Password material is hardened with Argon2id before the vault is written.
Windows public beta
QuadCrypt
A local-only encrypted file vault for Windows. Lock files behind four required passwords, optional key files, and optional Windows user/PC binding while keeping the recovery limits clear.
Local vault storage with explicit secrets.
QuadCrypt is built for files you want locked locally, with direct controls for passwords, key files, PC binding, backups, and recovery guidance.
Authenticated encryption layers
Locked vault data uses AES-256-GCM layers with per-chunk nonces and tags. The app has not completed an independent third-party audit.
Recovery limits are strict
Khuna Labs cannot recover a vault if passwords, a required key file, or a required Windows user/PC profile are lost.
A vault that behaves like normal files while unlocked.
When unlocked, QuadCrypt gives you a small file browser for importing, opening, revealing, deleting, and running files. When locked, the plaintext workspace is removed after the encrypted vault is written.
- Optional key files add a separate local secret.
- Optional PC binding uses Windows DPAPI for the current user profile.
- Encrypted backup and recovery guide tools are built into Options.
Passwords
4/4
Key file
Optional
Vault
Locked
Public beta with automatic licenses.
Paid beta licenses are issued automatically after checkout when payments are enabled. Paste the key into QuadCrypt Options to activate this Windows user.
What to expect in beta
- The executable is not code-signed yet, so Windows may show an unknown publisher warning.
- Do not rely on QuadCrypt as your only copy of important files.
- Unlocked files are normal plaintext files until you lock the vault again.
- Secure deletion cannot be guaranteed on SSDs, cloud-synced folders, backups, or shadow copies.
- Use the recovery guide and encrypted backup tools before storing anything important.
QuadCrypt is a public beta and has not been independently audited. Do not describe it as unbreakable, government-proof, military-grade, impossible to crack, or guaranteed secure.
Download QuadCrypt.
Run the public beta, choose portable or install mode, create a vault, and keep encrypted backups outside the app.