ConstGenerate modern key pairs (Ed25519, ML-KEM, ML-DSA, etc.).
Hash data using modern algorithms (SHA-2, SHA-3, BLAKE).
Encrypt data using modern AEAD ciphers (XChaCha20, AES-GCM).
Sign or verify messages with modern signature schemes.
Hash or verify passwords using Argon2.
Registry of modern (non-PGP) CLI command handlers.