PQ/T Composite Schemes for OpenPGP using NIST and Brainpool Elliptic Curve Domain Parameters

This document defines PQ/T ("post-quantum/traditional") composite schemes based on ML-KEM and ML-DSA combined with ECDH and ECDSA algorithms using the NIST and Brainpool domain parameters for the OpenPGP protocol [RFC9580], and as such extends [I-D.draft-ietf-openpgp-pqc].