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Project

NSA

The U.S. signals intelligence agency that supplied the NIST curve seeds

The National Security Agency is the U.S. signals intelligence agency. It supplied the seeds behind the NIST elliptic curves in the late 1990s, with no explanation or justification, according to Anthropic's Oct. 16, 2026 account of how the seeds were traced to a clock-seeded generator.

Description sourced from

  • AnthropicOct 19, 2026

    “they were provided by the NSA with no explanation or justification”

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    Claude traced NIST's curve seeds to a Unix clock in 1997, and Bitcoin has run all along on secp256k1, a curve built a different way.

    Oct 16, 2026

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