/* -*-c-*-
*
- * $Id: bbs.h,v 1.4 2000/06/17 10:45:48 mdw Exp $
+ * $Id: bbs.h,v 1.7 2004/04/08 01:36:15 mdw Exp $
*
* The Blum-Blum-Shub random bit generator
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: bbs.h,v $
- * Revision 1.4 2000/06/17 10:45:48 mdw
- * Minor changes for key fetching. Typesetting fixes.
- *
- * 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.
- *
- */
-
/*----- Notes on the BBS generator ----------------------------------------*
*
* The Blum-Blum-Shub generator takes the least significant bits from the
mp *n;
} bbs_pub;
-typedef struct bbs_param {
+typedef struct bbs_priv {
mp *p, *q; /* Prime factors (3 mod 4) */
mp *n; /* Product @pq@ -- a Blum integer */
-} bbs_param, bbs_priv;
+} bbs_priv;
/*----- Key fetching ------------------------------------------------------*/
extern const key_fetchdef bbs_privfetch[];
#define BBS_PRIVFETCHSZ 7
+/* --- @bbs_pubfree@, @bbs_privfree@ --- *
+ *
+ * Arguments: @bbs_pub *bp@, @bbs_priv *bp@ = pointer to key block
+ *
+ * Returns: ---
+ *
+ * Use: Frees a BBS key block.
+ */
+
+extern void bbs_pubfree(bbs_pub */*bp*/);
+extern void bbs_privfree(bbs_priv */*bp*/);
+
/*----- The basic generator -----------------------------------------------*/
/* --- @bbs_create@ --- *
/* --- @bbs_ff@ --- *
*
* Arguments: @bbs *b@ = pointer to a BBS generator state
- * @bbs_param *bp@ = pointer to BBS modulus factors
+ * @bbs_priv *bp@ = pointer to BBS modulus factors
* @unsigned long n@ = number of steps to make
*
* Returns: ---
* efficiently.
*/
-extern void bbs_ff(bbs */*b*/, bbs_param */*bp*/, unsigned long /*n*/);
+extern void bbs_ff(bbs */*b*/, bbs_priv */*bp*/, unsigned long /*n*/);
/* --- @bbs_rew@ --- *
*
* Arguments: @bbs *b@ = pointer to a BBS generator state
- * @bbs_param *bp@ = pointer to BBS modulus factors
+ * @bbs_priv *bp@ = pointer to BBS modulus factors
* @unsigned long n@ = number of steps to make
*
* Returns: ---
* at all.
*/
-extern void bbs_rew(bbs */*b*/, bbs_param */*bp*/, unsigned long /*n*/);
+extern void bbs_rew(bbs */*b*/, bbs_priv */*bp*/, unsigned long /*n*/);
/*----- Parameter generation ----------------------------------------------*/
/* --- @bbs_gen@ --- *
*
- * Arguments: @bbs_param *bp@ = pointer to parameter block
+ * Arguments: @bbs_priv *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
* Shub pseudorandom bit generator.
*/
-extern int bbs_gen(bbs_param */*bp*/, unsigned /*nbits*/, grand */*r*/,
+extern int bbs_gen(bbs_priv */*bp*/, unsigned /*nbits*/, grand */*r*/,
unsigned /*n*/, pgen_proc */*event*/, void */*ectx*/);
/*----- Generic random number generator interface -------------------------*/
/* --- Blum-Blum-Shub-specific misc op codes --- */
enum {
- BBS_SET = GRAND_SPECIFIC /* @mp *x@ */
+ BBS_SET = GRAND_SPECIFIC('B') /* @mp *x@ */
};
/*----- That's all, folks -------------------------------------------------*/