10000 gh-135244: use CSPRNG for random UUID node ID by LamentXU123 · Pull Request #135226 · python/cpython · GitHub
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Merged
merged 13 commits into from
Jun 8, 2025
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gh-135244: use CSPRNG for random UUID node ID #135226

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Update Misc/NEWS.d/next/Library/2025-06-08-10-22-22.gh-issue-135244.Y… 
…2SOTJ.rst

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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LamentXU123 and picnixz authored Jun 8, 2025
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6 changes: 4 additions & 2 deletions Misc/NEWS.d/next/Library/2025-06-08-10-22-22.gh-issue-135244.Y2SOTJ.rst
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Python used to generare random Node ID of UUID when it failed to get the MAC address by PRNG.
the random Node ID is now generated by a CSPRNG for security reasons.
:mod:`uuid`: when the MAC address cannot be determined, the 48-bit node
ID is now generated with a cryptographically-secure pseudo-random number
generator (CSPRNG) as per :rfc:`RFC 9562, §6.10 <9562#section-6.10>`.
This affects :func:`~uuid.uuid1` and :func:`~uuid.uuid6`.
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