hkdf
elliptic-curve cryptography
HMAC-based key derivation function (HKDF) standalone implementation using pure Python.
Per-scope envelope encryption for BYOK secrets: AES-256-GCM + HKDF, separator-injection-proof scope derivation, storage-agnostic
Batteries-included pure-Python cryptography: hashing, HKDF, ChaCha20-Poly1305, X25519, Ed25519, ECDSA, JWT, sealed boxes. Zero dependencies.
Secure, encrypted and authenticated Pickle storage for Python with restricted loading, environment variables, backups, and a simple key/value API.