Schnorr signatures per BIP340 over secp256k1, using x-only public keys. Provably secure under a simpler assumption than ECDSA and supports clean signature aggregation (MuSig) — compare against ecdsa.ts on the same curve.

Post-quantum digital signatures (NIST FIPS 204, formerly Dilithium), pairing with ML-KEM the same way Ed25519 pairs with X25519 classically — except the hard problem here is lattice-based (Module-LWE/SIS), not elliptic-curve discrete log.

Post-quantum key encapsulation (NIST FIPS 203, formerly Kyber), based on the Module Learning With Errors lattice problem — secure against both classical and quantum attackers, unlike every other asymmetric module here.