* [including the GNU Public Licence.]
*/
+#define OPENSSL_FIPSAPI
+
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/bn.h>
return dh->meth->compute_key(key, pub_key, dh);
}
+int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh)
+ {
+ int rv, pad;
+ rv = dh->meth->compute_key(key, pub_key, dh);
+ if (rv <= 0)
+ return rv;
+ pad = BN_num_bytes(dh->p) - rv;
+ if (pad > 0)
+ {
+ memmove(key + pad, key, rv);
+ memset(key, 0, pad);
+ }
+ return rv + pad;
+ }
+
static DH_METHOD dh_ossl = {
"OpenSSL DH Method",
generate_key,
if (generate_new_key)
{
- l = dh->length ? dh->length : BN_num_bits(dh->p)-1; /* secret exponent length */
- if (!BN_rand(priv_key, l, 0, 0)) goto err;
+ if (dh->q)
+ {
+ do
+ {
+ if (!BN_rand_range(priv_key, dh->q))
+ goto err;
+ }
+ while (BN_is_zero(priv_key) || BN_is_one(priv_key));
+ }
+ else
+ {
+ /* secret exponent length */
+ l = dh->length ? dh->length : BN_num_bits(dh->p)-1;
+ if (!BN_rand(priv_key, l, 0, 0)) goto err;
+ }
}
{