Implement fixed-window exponentiation to mitigate hyper-threading

[openssl.git] / crypto / dsa / dsatest.c

diff --git a/crypto/dsa/dsatest.c b/crypto/dsa/dsatest.c
index ccc456eab7aee13caa767928bf446bfd217c6669..66ff417398719202af5731f97d4b9c5bea0a8f51 100644 (file)
--- a/crypto/dsa/dsatest.c
+++ b/crypto/dsa/dsatest.c
@@ -204,10 +204,19 @@ int main(int argc, char **argv)
                BIO_printf(bio_err,"g value is wrong\n");
                goto end;
                }
+
+       dsa->flags |= DSA_FLAG_NO_EXP_CONSTTIME;
        DSA_generate_key(dsa);
        DSA_sign(0, str1, 20, sig, &siglen, dsa);
        if (DSA_verify(0, str1, 20, sig, siglen, dsa) == 1)
                ret=1;
+
+       dsa->flags &= ~DSA_FLAG_NO_EXP_CONSTTIME;
+       DSA_generate_key(dsa);
+       DSA_sign(0, str1, 20, sig, &siglen, dsa);
+       if (DSA_verify(0, str1, 20, sig, siglen, dsa) == 1)
+               ret=1;
+
 end:
        if (!ret)
                ERR_print_errors(bio_err);