Post-Quantum and Hybrid KEMs for HPKE with JOSE and COSE

This document specifies the use of Post-Quantum (PQC) and Post- Quantum/Traditional (PQ/T) Hybrid Key Encapsulation Mechanisms (KEMs) within the Hybrid Public Key Encryption (HPKE) for JOSE and COSE. It defines algorithm identifiers and key formats to support pure post- quantum algorithms (ML-KEM) and their PQ/T hybrid combinations.