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From:   <rsbecker@nexbridge.com>
To:     "'Carlo Arenas'" <carenas@gmail.com>
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        "'Jeff King'" <peff@peff.net>, <git@vger.kernel.org>
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Subject: RE: [PATCH 1/2] wrapper: add a helper to generate numbers from a CSPRNG
Date:   Tue, 16 Nov 2021 22:05:29 -0500
Organization: Nexbridge Inc.
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On November 16, 2021 7:48 PM, Carlo Arenas wrote:
> On Tue, Nov 16, 2021 at 4:01 PM <rsbecker@nexbridge.com> wrote:
> >
> > We do link with libcurl and use OpenSSL as a DLL to handle TLS. The
> underlying random source for the nonstop-* configurations as of OpenSSL
> 3.0 are PNRG supplied by the vendor (HPE) on ia64 and the hardware
> rdrand* instructions on x86. I know that part of the OpenSSL code rather
> intimately.
> 
> Older versions of OpenSSL exported (AFAIK) a usable version of
> arc4random_buf() that could have helped here; it seems to still be there in
> libressl[1] which is mostly API compatible and might be worth looking into
> IMHO even if as you pointed out will need an implementation similar to what
> OpenSSL does internally.
> 
> [1] https://cvsweb.openbsd.org/src/lib/libcrypto/arc4random/

I do not see arc4random being used in our builds going back to OpenSSL 1.0.2, which is as far back as I go anyway.