/* -*-c-*-
*
- * $Id: bbs.h,v 1.1 1999/12/10 23:14:59 mdw Exp $
+ * $Id: bbs.h,v 1.3 2000/02/12 18:21:02 mdw Exp $
*
* The Blum-Blum-Shub random bit generator
*
/*----- Revision history --------------------------------------------------*
*
* $Log: bbs.h,v $
+ * Revision 1.3 2000/02/12 18:21:02 mdw
+ * Overhaul of key management (again).
+ *
+ * Revision 1.2 1999/12/22 15:52:08 mdw
+ * Rename `bbs_params' to `bbs_param' for consistency.
+ *
* Revision 1.1 1999/12/10 23:14:59 mdw
* Blum-Blum-Shub generator, and Blum-Goldwasser encryption.
*
# include "mpbarrett.h"
#endif
+#ifndef CATACOMB_PGEN_H
+# include "pgen.h"
+#endif
+
/*----- Data structures ---------------------------------------------------*/
/* --- Basic generator state --- */
/* --- Parameters --- */
-typedef struct bbs_params {
+typedef struct bbs_param {
mp *p, *q; /* Prime factors (3 mod 4) */
mp *n; /* Product @pq@ -- a Blum integer */
-} bbs_params;
-
-/*----- Event codes from @bbs_gen@ ----------------------------------------*/
-
-enum {
- BBSEV_OK,
-
- BBSEV_FINDP,
- BBSEV_TRYP,
- BBSEV_PASSP,
- BBSEV_FAILP,
- BBSEV_GOODP,
-
- BBSEV_FINDQ,
- BBSEV_TRYQ,
- BBSEV_PASSQ,
- BBSEV_FAILQ,
- BBSEV_GOODQ
-};
+} bbs_param;
/*----- The basic generator -----------------------------------------------*/
/* --- @bbs_ff@ --- *
*
* Arguments: @bbs *b@ = pointer to a BBS generator state
- * @bbs_params *bp@ = pointer to BBS modulus factors
+ * @bbs_param *bp@ = pointer to BBS modulus factors
* @unsigned long n@ = number of steps to make
*
* Returns: ---
* efficiently.
*/
-extern void bbs_ff(bbs */*b*/, bbs_params */*bp*/, unsigned long /*n*/);
+extern void bbs_ff(bbs */*b*/, bbs_param */*bp*/, unsigned long /*n*/);
/* --- @bbs_rew@ --- *
*
* Arguments: @bbs *b@ = pointer to a BBS generator state
- * @bbs_params *bp@ = pointer to BBS modulus factors
+ * @bbs_param *bp@ = pointer to BBS modulus factors
* @unsigned long n@ = number of steps to make
*
* Returns: ---
* at all.
*/
-extern void bbs_rew(bbs */*b*/, bbs_params */*bp*/, unsigned long /*n*/);
+extern void bbs_rew(bbs */*b*/, bbs_param */*bp*/, unsigned long /*n*/);
/*----- Parameter generation ----------------------------------------------*/
/* --- @bbs_gen@ --- *
*
- * Arguments: @bbs_params *bp@ = pointer to parameter block
- * @mp *p, *q@ = initial numbers to search from
- * @size_t n@ = number of attempts to make
- * @void (*proc)(int ev, mp *m, void *p)@ = event handler
- * @void *arg@ = argument for event handler
+ * Arguments: @bbs_param *bp@ = pointer to parameter block
+ * @unsigned nbits@ = number of bits in the modulus
+ * @grand *r@ = pointer to random number source
+ * @unsigned n@ = number of attempts to make
+ * @pgen_proc *event@ = event handler function
+ * @void *ectx@ = argument for event handler
*
- * Returns: Zero if all went well, otherwise an event code which explains
- * the problem.
+ * Returns: If it worked OK, @PGEN_DONE@, otherwise @PGEN_ABORT@.
*
* Use: Finds two prime numbers %$p'$% and %$q'$% such that both are
* congruent to %$3 \bmod 4$%, and $(p - 1)/2$% and
* Shub pseudorandom bit generator.
*/
-extern int bbs_gen(bbs_params */*bp*/, mp */*p*/, mp */*q*/, size_t /*n*/,
- int (*/*proc*/)(int /*ev*/, mp */*m*/, void */*p*/),
- void */*arg*/);
+extern int bbs_gen(bbs_param */*bp*/, unsigned /*nbits*/, grand */*r*/,
+ unsigned /*n*/, pgen_proc */*event*/, void */*ectx*/);
/*----- Generic random number generator interface -------------------------*/