Claude & Cryptography: 25-Year NIST ECDSA Seed Mystery Solved
research••2 min•anthropic.com
In under 30 minutes, an internal Claude research model solved the 25-year cryptographic mystery behind the NSA-generated NIST elliptic curve seeds (P-192 through P-521), proving they were produced by 1990s C library lrand48 calls seeded with Unix timestamps between May 1997 and April 1998.
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