Checked fact 175718 Oct 2026Research

The post says the seeds for NIST P-192, P-224, P-256, P-384 and P-521 are not hash outputs but come from the C library's lrand48 generator seeded with a Unix timestamp.

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The exact words it rests on

None of them were the results of any hash algorithm at all, but rather the output of the C library’s `lrand48` random-number generator, seeded with a Unix timestamp!

What the source said when we opened it, on 18 Oct 2026.

The source

Claude reveals ECDSA curve origins
Anthropic · 2026-10-16

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Checked

Checked by the notis newsroom on 18 Oct 2026, against the source above.

In the story

Anthropic says an internal model traced NIST curve seeds to lrand48 and a timestamp, making a backdoor less plausible. 18 Oct 2026

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In a sentence

“The post says the seeds for NIST P-192, P-224, P-256, P-384 and P-521 are not hash outputs but come from the C library's lrand48 generator seeded with a Unix timestamp.” ai notis, checked 18 Oct 2026. Source: Claude reveals ECDSA curve origins (Anthropic). https://ainotis.com/c/1757

As a reference (APA style)

ai notis. (2026, October 18). The post says the seeds for NIST P-192, P-224, P-256, P-384 and P-521 are not hash outputs but come from the C library's lrand48 generator seeded with a Unix timestamp [Checked claim 1757]. ai notis. https://ainotis.com/c/1757

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