Encrypted Storage
All secrets are encrypted at rest using AES-256-GCM with application-layer key derivation. Neither the storage layer nor the filesystem can read plaintext without authorisation.
- AES-256-GCM encryption at rest with unique per-secret keys
- Key derivation via Argon2id from master passphrase
- Encrypted backups with separate backup keys
- Tamper-evident audit log of all secret access