diff options
| author | lloyd <[email protected]> | 2010-03-05 21:24:35 +0000 |
|---|---|---|
| committer | lloyd <[email protected]> | 2010-03-05 21:24:35 +0000 |
| commit | 3900bd1e5a9974eea4faee4a8159380ea67c6251 (patch) | |
| tree | ee079b17d4531a730da3ef1e57c729de6412f3d0 | |
| parent | 6b39750947767194af6503a79fe699527e499796 (diff) | |
On GMP 5.0 and later, use mpz_powm_sec, which is a version of modular
exponentiation that has countermeasures against side-channel attacks.
| -rw-r--r-- | src/engine/gnump/gnump_pk.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/engine/gnump/gnump_pk.cpp b/src/engine/gnump/gnump_pk.cpp index f26500dd5..3ca1f25ff 100644 --- a/src/engine/gnump/gnump_pk.cpp +++ b/src/engine/gnump/gnump_pk.cpp @@ -9,6 +9,12 @@ #include <botan/internal/gmp_wrap.h> #include <gmp.h> +/* GnuMP 5.0 and later have a side-channel resistent powm */ +#if defined(HAVE_MPZ_POWM_SEC) + #undef mpz_powm + #define mpz_powm mpz_powm_sec +#endif + #if defined(BOTAN_HAS_RSA) #include <botan/rsa.h> #endif |