/* -*-c-*-
*
- * $Id: dsa.h,v 1.5 2000/06/17 10:53:42 mdw Exp $
+ * $Id: dsa.h,v 1.7 2000/07/29 09:59:44 mdw Exp $
*
* Digital Signature Algorithm
*
/*----- Revision history --------------------------------------------------*
*
* $Log: dsa.h,v $
+ * Revision 1.7 2000/07/29 09:59:44 mdw
+ * Share data structures with Diffie-Hellman stuff.
+ *
+ * Revision 1.6 2000/07/01 11:20:51 mdw
+ * New functions for freeing public and private keys.
+ *
* Revision 1.5 2000/06/17 10:53:42 mdw
* Minor changes for key fetching. Typesetting fixes.
*
/*----- Header files ------------------------------------------------------*/
+#ifndef CATACOMB_DH_H
+# include "dh.h"
+#endif
+
#ifndef CATACOMB_KEY_H
# include "key.h"
#endif
/*----- Data structures ---------------------------------------------------*/
-/* --- DSA parameter structure --- *
- *
- * These parameters can, and probably should, be shared among a group of
- * users.
- */
-
-typedef struct dsa_param {
- mp *p, *q; /* Prime numbers %$p$% and %$q$% */
- mp *g; /* Generates order-%$q$% subgroup */
-} dsa_param;
-
-typedef struct dsa_pub {
- dsa_param dp; /* Shared parameters */
- mp *y; /* Public key */
-} dsa_pub;
+/* --- The parameters and keys are the same as for Diffie-Hellman --- */
-typedef struct dsa_priv {
- dsa_param dp; /* Shared parameters */
- mp *x; /* Private key */
- mp *y; /* %$y \equiv g^x \pmod{p}$% */
-} dsa_priv;
+typedef dh_param dsa_param;
+typedef dh_pub dsa_pub;
+typedef dh_priv dsa_priv;
/* --- DSA signature structure --- *
*
/*----- Key fetching ------------------------------------------------------*/
-extern const key_fetchdef dsa_paramfetch[];
-#define DSA_PARAMFETCHSZ 5
+#define dsa_paramfetch dh_paramfetch
+#define dsa_pubfetch dh_pubfetch
+#define dsa_privfetch dh_privfetch
-extern const key_fetchdef dsa_pubfetch[];
-#define DSA_PUBFETCHSZ 6
+#define DSA_PARAMFETCHSZ DH_PARAMFETCHSZ
+#define DSA_PUBFETCHSZ DH_PUBFETCHSZ
+#define DSA_PRIVFETCHSZ DH_PRIVFETCHSZ
-extern const key_fetchdef dsa_privfetch[];
-#define DSA_PRIVFETCHSZ 9
+#define dsa_paramfree dh_paramfree
+#define dsa_pubfree dh_pubfree
+#define dsa_privfree dh_privfree
/*----- DSA stepper -------------------------------------------------------*/
/*----- Functions provided ------------------------------------------------*/
-/* --- @dsa_seed@ --- *
+/* --- @dsa_gen@ --- *
*
* Arguments: @dsa_param *dp@ = where to store parameters
* @unsigned ql@ = length of @q@ in bits
* %$l$%. Neither limitation applies to this implementation.
*/
-extern int dsa_seed(dsa_param */*dp*/, unsigned /*ql*/, unsigned /*pl*/,
- unsigned /*steps*/, const void */*k*/, size_t /*sz*/,
- pgen_proc */*event*/, void */*ectx*/);
+extern int dsa_gen(dsa_param */*dp*/, unsigned /*ql*/, unsigned /*pl*/,
+ unsigned /*steps*/, const void */*k*/, size_t /*sz*/,
+ pgen_proc */*event*/, void */*ectx*/);
/* --- @dsa_mksig@ --- *
*
*/
extern int dsa_verify(const dsa_param */*dp*/, mp */*y*/,
- const void */*m*/, size_t /*msz*/,
- const void */*r*/, size_t /*rsz*/,
- const void */*s*/, size_t /*ssz*/);
+ const void */*m*/, size_t /*msz*/,
+ const void */*r*/, size_t /*rsz*/,
+ const void */*s*/, size_t /*ssz*/);
/*----- That's all, folks -------------------------------------------------*/