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build: test for timingsafe_bcmp 

Code introduced in #15649 added usage of `timingsafe_bcmp()`, if
available, otherwise falling back to our own implementation. However
the relevant build system check was never added, so currently, we'll
always just use our implementation, as HAVE_TIMINGSAFE_BCMP will never
be defined.

Add the check for timingsafe_bcmp. Note that as far as I'm aware, it's
only available on OpenBSD.
This commit is contained in:
fanquake 2022-06-10 11:14:49 +01:00
parent e3c08eb620
commit 491bb14c0c
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2 changed files with 6 additions and 0 deletions
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2
configure.ac
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@ -998,6 +998,8 @@ AC_CHECK_DECLS([setsid])
AC_CHECK_DECLS([pipe2])
AC_CHECK_FUNCS([timingsafe_bcmp])
AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
[#if HAVE_ENDIAN_H
#include <endian.h>

4
src/crypto/chacha_poly_aead.cpp
View File

@ -2,6 +2,10 @@
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <crypto/chacha_poly_aead.h>
#include <crypto/poly1305.h>