(Post-Quantum) Cryptographic Right Answers

Filippo Valsorda, a cryptography engineer at Cloudflare, discusses the challenges of implementing post-quantum cryptography and the importance of finding the right answers to key questions. He identifies three main challenges: key size, computational efficiency, and implementation. Valsorda suggests that the answer lies in finding the right set of cryptographic primitives, such as isogeny-based cryptography and code-based cryptography, that balance these factors. He also emphasizes the need for a more collaborative approach to post-quantum cryptography, involving both academia and industry. Valsorda argues that the current state of post-quantum cryptography is like being in a room with multiple people, each giving different answers, and that a more collaborative effort is needed to find the right answers. He concludes that the field needs to move from a state of 'multiple right answers' to a state of 'one right answer.'