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-rw-r--r--rsa.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/rsa.c b/rsa.c
index 113ee7fc..66561a42 100644
--- a/rsa.c
+++ b/rsa.c
@@ -60,7 +60,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: rsa.c,v 1.23 2001/06/27 05:42:24 markus Exp $");
+RCSID("$OpenBSD: rsa.c,v 1.24 2001/12/27 18:22:16 markus Exp $");
#include "rsa.h"
#include "log.h"
@@ -120,14 +120,17 @@ rsa_private_decrypt(BIGNUM *out, BIGNUM *in, RSA *key)
return len;
}
+/* calculate p-1 and q-1 */
void
rsa_generate_additional_parameters(RSA *rsa)
{
BIGNUM *aux;
BN_CTX *ctx;
- /* Generate additional parameters */
- aux = BN_new();
- ctx = BN_CTX_new();
+
+ if ((aux = BN_new()) == NULL)
+ fatal("rsa_generate_additional_parameters: BN_new failed");
+ if ((ctx = BN_CTX_new()) == NULL)
+ fatal("rsa_generate_additional_parameters: BN_CTX_new failed");
BN_sub(aux, rsa->q, BN_value_one());
BN_mod(rsa->dmq1, rsa->d, aux, ctx);