Let’s All Agree to Use Seeds as ML-KEM Keys

NIST published FIPS 203, finalizing the ML-KEM post-quantum cryptography standard, which explicitly allows storing private keys as 64-byte seeds instead of expanded format (1.6–3.2 KB). Cryptographer Filippo Valsorda advocates for industry-wide adoption of seed-only storage, citing smaller size and simpler validation. The expanded format requires complex validation checks that seeds eliminate, reducing implementation bugs and ecosystem fragmentation.