
Claude reveals ECDSA curve origins
Anthropic reports that an internal Claude research model solved a long-standing open question in cryptography: the origin of the mysterious seed values NIST used to generate ECDSA elliptic curve parameters in 2000. Using pattern recognition and lattice reduction (LLL), Claude determined the seeds came from a 1990s C library PRNG (lrand48) initialized with Unix timestamps from 1997-98, rather than a hashed passphrase as previously rumored, and also traced some curve base points to a separate RNG used in Arjen Lenstra's FreeLIP library.
