On 22.07.25 13:11, Dagfinn Ilmari Mannsåker wrote:
getrandom() is Linux-specific, while getentropy() is specified by POSIX
(since 2024). It was originally introduced by OpenBSD 5.6 in 2014, and
was added to macOS 10.12 in 2016, glibc 2.25 (same as getrandom()) in
2017, musl 1.1.20 and FreeBSD 12.0 in 2018, and NetBSD 10.0 in 2024
Sources:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/getentropy.html
https://dotat.at/@/2024-10-01-getentropy.html
So I think it's more worthwhile to add support for getentropy() than
getrandom().
The POSIX description of getentropy() says:
"The intended use of this function is to create a seed for other
pseudo-random number generators."
So using getentropy() for generating the random numbers that are passed
back to the application code would appear to be the wrong use.
