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Is NIST P-256 Backdoored? Its Seed Was a 1997 Unix Timestamp

This story is from 2026-10-18. It is preserved in the archive; the latest stories are on the live feed.

The "magic" seed behind NIST P-256 is C49D3608 86E70493 6A6678E1 139D26B7 819F7E90 . For more than 25 years nobody outside the NSA could say where it came from. This week Anthropic's Claude traced it to a Unix timestamp from August 16, 1997, fed into the same rand48 generator you'd find in any 1990…

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  1. 2026-10-18 13:10 · DEV Community — AI
    Is NIST P-256 Backdoored? Its Seed Was a 1997 Unix Timestamp

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