Quantum-Resistant Identity and Access Management for MCP Hosts

The blog outlines how quantum computing, particularly Shor’s algorithm, endangers current AI identity and access models that rely on RSA/ECC in MCP environments, enabling future forgery of tokens and exploitation of long-lived secrets under Harvest-Now-Decrypt-Later threats. It recommends a quantum-safe architecture using CRYSTALS-Kyber and Dilithium, PQuAKE for lightweight key exchange, Zero Standing Privileges with ephemeral credentials, crypto-agile sidecar proxies, and hardware-backed identities via PUFs, combined with context-aware access and continuous anomaly monitoring to mitigate risk during the transition period.