added option file handling

1 files changed, 49 insertions, 0 deletions

diff --git a/cipher/dsa.h b/cipher/dsa.h
new file mode 100644
index 000000000..7ed38a4b3
--- /dev/null
+++ b/cipher/dsa.h
@@ -0,0 +1,49 @@
+/* dsa.h  -  DSA signature scheme
+ *	Copyright (c) 1997 by Werner Koch (dd9jn)
+ *
+ * This file is part of G10.
+ *
+ * G10 is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * G10 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+#ifndef G10_DSA_H
+#define G10_DSA_H
+
+#include "mpi.h"
+
+typedef struct {
+    MPI p;	    /* prime */
+    MPI q;	    /* group order */
+    MPI g;	    /* group generator */
+    MPI y;	    /* g^x mod p */
+} DSA_public_key;
+
+
+typedef struct {
+    MPI p;	    /* prime */
+    MPI q;	    /* group order */
+    MPI g;	    /* group generator */
+    MPI y;	    /* g^x mod p */
+    MPI x;	    /* secret exponent */
+} DSA_secret_key;
+
+
+void dsa_free_public_key( DSA_public_key *pk );
+void dsa_free_secret_key( DSA_secret_key *sk );
+void dsa_generate( DSA_public_key *pk, DSA_secret_key *sk, unsigned nbits );
+int  dsa_check_secret_key( DSA_secret_key *sk );
+void dsa_sign(MPI a, MPI b, MPI input, DSA_secret_key *skey);
+int  dsa_verify(MPI a, MPI b, MPI input, DSA_public_key *pkey);
+
+#endif /*G10_DSA_H*/