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Add optimized Argon2 SSE code.

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Note: it is always better to use external libargon2 library.

Unfortunately, until Argon2 is in generic crypto libraries,
we must sometimes use bundled version just for bureaucratic reasons.

Let's include optimized variant of reference implementation as well.

Note, this code will not add any SSE compiler switches.

If --enable-internal-sse-argon2 option is used, it checks if current
compilation flags support simple SSE progam and if so, it use
the optimized variant.
(Not tested for AVX optimizations; it expects that SSE is enabled as well.)
This commit is contained in:
Milan Broz
2018-07-06 22:29:35 +02:00
parent 2f38ade0e0
commit ba384d15d2
4 changed files with 777 additions and 2 deletions
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15
configure.ac
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@@ -408,12 +408,27 @@ if test x$enable_libargon2 = xyes ; then
enable_internal_argon2=no
else
AC_MSG_WARN([Argon2 bundled (slow) reference implementation will be used, please consider to use system library with --enable-libargon2.])
AC_ARG_ENABLE(internal-sse-argon2, AS_HELP_STRING([--enable-internal-sse-argon2],
[enable internal SSE implementation of Argon2 PBKDF]),[], [enable_internal_sse_argon2=no])
if test x$enable_internal_sse_argon2 = xyes ; then
AC_MSG_CHECKING(if Argon2 SSE optimization can be used)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <emmintrin.h>
__m128i testfunc(__m128i *a, __m128i *b) {
return _mm_xor_si128(_mm_loadu_si128(a), _mm_loadu_si128(b));
}
]])],,[enable_internal_sse_argon2=no])
AC_MSG_RESULT($enable_internal_sse_argon2)
fi
fi
if test x$enable_internal_argon2 = xyes ; then
AC_DEFINE(USE_INTERNAL_ARGON2, 1, [Use internal Argon2])
fi
AM_CONDITIONAL(CRYPTO_INTERNAL_ARGON2, test x$enable_internal_argon2 = xyes)
AM_CONDITIONAL(CRYPTO_INTERNAL_SSE_ARGON2, test x$enable_internal_sse_argon2 = xyes)
dnl Magic for cryptsetup.static build.
if test x$enable_static_cryptsetup = xyes; then