Claude traces NIST ECDSA curve seeds to lrand48, undercutting NSA backdoor theory
typeomanic · reddit · 2026-10-17
A Reddit user highlights Anthropic research: an internal model found in under 30 minutes that NIST ECDSA curve seeds (P-192 to P-521) weren't hashes but output from C's lrand48 seeded with Unix timestamps from May 1997 to April 1998, with P-256 the first candidate. The author reads it as both proof against an NSA backdoor and an unsettling sign of model research capability; the $36,864 bounty goes to ISRG.
Related event: Claude Cracks Decades-Old ECDSA Curve Seed Mystery in Under 30 Minutes(27 posts)→
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