Hi, Please don't top-quote on postgres mailing lists.
On 2017-11-22 16:16:35 +0000, David CARLIER wrote: > > David CARLIER <devne...@gmail.com> writes: > > > I m not against as such that depends of the implementation but I ve seen > > in > > > quick glance it s RC4 ? > > > > More generally, why should we bother with an additional implementation? > > Is this better than /dev/urandom, and if so why? > Basically the call never fails, always generating high quality random data > (especially the implementations based on Chacha* family, RC4 has > predictability issues), there is no need of a file descriptor. I don't really see much benefit in those properties for postgres specifically. Not needing an fd is nice for cases where you're not guaranteed to have access to a filesystem, but postgres isn't going to work in those cases anyway. Greetings, Andres Freund