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A comment on Ask HN: We just had an actual UUID v4 collision.... Parent comment

Re:Ask HN: We just had an actual UUID v4 collision... by Hizonner on Friday May 08, 2026 @04:04PM (#48068030)
> UUIDv4 is explicitly forbidden for a lot of high-assurance and high-reliability software systems for this reason.

Hmm. What do those systems do for cryptography? Just assume it won't work and not rely on it at all?

[ Parent | on HN ]
Re:Ask HN: We just had an actual UUID v4 collision... by jandrewrogers on Friday May 08, 2026 @04:18PM (#48068244)
In these kinds of systems the cryptographic components often aren't even accessible from the software. It isn't a thing you need to worry about.

This makes it easier to audit for use of entropy sources in the software since there really isn't a valid use case for it.

[ Parent | on HN ]