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-rw-r--r--rsa.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/rsa.c b/rsa.c
index 62655314..f69f9960 100644
--- a/rsa.c
+++ b/rsa.c
@@ -60,7 +60,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: rsa.c,v 1.21 2001/02/04 15:32:24 stevesk Exp $");
+RCSID("$OpenBSD: rsa.c,v 1.22 2001/03/26 23:23:23 markus Exp $");
#include "rsa.h"
#include "log.h"
@@ -119,3 +119,23 @@ rsa_private_decrypt(BIGNUM *out, BIGNUM *in, RSA *key)
xfree(inbuf);
return len;
}
+
+void
+generate_additional_parameters(RSA *rsa)
+{
+ BIGNUM *aux;
+ BN_CTX *ctx;
+ /* Generate additional parameters */
+ aux = BN_new();
+ ctx = BN_CTX_new();
+
+ BN_sub(aux, rsa->q, BN_value_one());
+ BN_mod(rsa->dmq1, rsa->d, aux, ctx);
+
+ BN_sub(aux, rsa->p, BN_value_one());
+ BN_mod(rsa->dmp1, rsa->d, aux, ctx);
+
+ BN_clear_free(aux);
+ BN_CTX_free(ctx);
+}
+