Cryptographic Agility and Key Rotation

The blog post explores the challenges and strategies for transitioning to post-quantum cryptography (PQC), focusing on cryptographic agility and key rotation. Cryptographic agility refers to the ability to change cryptographic algorithms without major engineering changes. However, the overuse of agility can create complexity, technical debt, and vulnerabilities. The article emphasizes the importance of designing systems that can rotate keys in an eventually consistent manner, such as through a keyset where keys are cycled without service disruption. Successful migration to PQC requires systems that support key rotation while ensuring security and compatibility across different algorithm versions.

https://bughunters.google.com/blog/6038863069184000/formally-verified-post-quantum-algorithms

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