AnalysisOpinion / analysisApplications · Efficiency & Inference · Safety & Alignment1 source · Oct 17, 2026

Anthropics' Claude cracks a 25-year-old NSA cryptography mystery in under 30 minutes

Anthropic's AI model Claude has solved a 25-year-old cryptography puzzle.

Proof1 independent outlet

Key points

  • The mysterious seeds behind NIST's standard curves for digital signatures were provided by the NSA without explanation, raising long-standing suspicion about built-in backdoors.
  • Claude figured out in under 30 minutes that the seeds came from "lrand48," a simple C random number generator, making deliberate backdoors far less likely.
  • The article Anthropics' Claude cracks a 25-year-old NSA cryptography mystery in under 30 minutes appeared first on The Decoder.

Sources (1)

Extractive summary: sentences quoted from the sources.

Before this

  1. Oct 16, 2026Working at the frontier shapes expectations for the future
  2. Oct 16, 2026Designing more efficient quantum circuits with Claude
  3. Oct 16, 2026Claude reveals ECDSA curve origins
  4. Oct 16, 2026How employment is changing at Anthropic
  5. Oct 15, 2026Anthropic gives outside AI watchdog “employee-like” access
  6. Oct 15, 2026Anthropic tells investors quarterly revenue up nearly 50% to $16.8bn ahead of IPO

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