Claude reveals ECDSA curve origins

Claude has uncovered the origins of a popular cryptographic standard by analyzing seed patterns. By developing a scanner, Claude identified that some seeds had all zero top bits, a signature of the lrand48 linear congruential generator. This pattern, visible once known, allowed Claude to recover the state by testing hidden bits. This discovery resolved a decades-old mystery, and the $36,864 reward for finding the seeds will be donated to the Internet Security Research Group.

This report details how Claude's novel scanning method, unlike prior analyses, identified a specific 1990s-vintage generator by recognizing a subtle bit pattern.