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this adds the new bytestring apis and new regression tests
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Add pidwraptest.txt to DISTCLEANFILES to let it be removed on distclean.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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The FreeBSD-native arc4random_buf implementation falls back to weak
sources of entropy if the sysctl fails. Remove these dangerous fallbacks
by overriding locally.
Unfortunately, pthread_atfork() is broken on FreeBSD (at least 9 and 10)
if a program does not link to -lthr. Callbacks registered with
pthread_atfork() simply fail silently. So, it is not always possible to
detect a PID wraparound. I wish we could do better.
This improves arc4random_buf's safety compared to the native FreeBSD
implementation. Tested on FreeBSD 9 and 10.
ok beck@ deraadt@
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Simplify autoconf checks by using AC_CHECK_FUNCS/HEADERS.
Clarify some ambiguous dependencies around strnlen/strndup.
Unconditionally enable pidwraptest for all arc4random implementations.
Remove HAVE_VASPRINTF conditional, since asprintf requires vasprintf.
ok @doug
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This removes the need to specify each one individually.
ok doug@
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The original author clarified the license, so we are fine to ship with
the PID wraparound test. Run it by default if libressl is using the
native arc4random supplied from the OS.
ok deraadt@
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