Post-Quantum Cryptography Migration at Meta: Framework, Lessons, and Takeaways

What this post added

This post details Meta's proactive migration to post-quantum cryptography (PQC) to address the threat posed by quantum computers. It introduces the concept of 'PQC Migration Levels' (PQ-Enabled, PQ-Hardened, PQ-Ready, PQ-Aware, PQ-Unaware) to help organizations manage migration complexity. The post outlines Meta's PQC strategy, including prioritization criteria (High, Medium, Low priority based on attack types like SNDL and Grover's), building a cryptographic inventory through automated discovery and manual analysis, addressing external dependencies, implementing PQC components and guardrails, and integrating PQC components into use cases. It highlights Meta's involvement in developing PQC standards like HQC and shares lessons learned to guide the broader community.