fixed DH value range testing

diff --git a/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c b/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c
index 1d885d1..4c5ffc6 100644 (file)
--- a/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c
+++ b/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c
@@ -395,7 +395,7 @@ static void set_other_public_value(private_gmp_diffie_hellman_t *this, chunk_t v
        /* check public value: 
         * 1. 0 or 1 is invalid as 0^a = 0 and 1^a = 1
         * 2. a public value larger or equal the modulus is invalid */
-       if (mpz_cmp_ui(this->yb, 1) > 0 ||
+       if (mpz_cmp_ui(this->yb, 1) > 0 &&
                mpz_cmp(this->yb, p_min_1) < 0)
        {
 #ifdef EXTENDED_DH_TEST