/* -*-c-*-
*
- * $Id: dh.h,v 1.6 2000/07/29 10:01:16 mdw Exp $
+ * $Id$
*
* Diffie-Hellman and related public-key systems
*
* (c) 1999 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of Catacomb.
*
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
- *
+ *
* Catacomb 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 Library General Public License for more details.
- *
+ *
* You should have received a copy of the GNU Library General Public
* License along with Catacomb; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: dh.h,v $
- * Revision 1.6 2000/07/29 10:01:16 mdw
- * Supply commentry for the Diffie-Hellman parameters. Add Lim-Lee
- * parameter generation.
- *
- * Revision 1.5 2000/07/01 11:20:51 mdw
- * New functions for freeing public and private keys.
- *
- * Revision 1.4 2000/06/17 10:52:47 mdw
- * Minor changes for key fetching.
- *
- * Revision 1.3 2000/02/12 18:21:02 mdw
- * Overhaul of key management (again).
- *
- */
-
#ifndef CATACOMB_DH_H
#define CATACOMB_DH_H
/*----- Header files ------------------------------------------------------*/
+#ifndef CATACOMB_GROUP_H
+# include "group.h"
+#endif
+
#ifndef CATACOMB_GRAND_H
# include "grand.h"
#endif
# include "key.h"
#endif
+#ifndef CATACOMB_KEYCHECK_H
+# include "keycheck.h"
+#endif
+
#ifndef CATACOMB_PGEN_H
# include "pgen.h"
#endif
+#ifndef CATACOMB_QDPARSE_H
+# include "qdparse.h"
+#endif
+
/*----- Data structures ---------------------------------------------------*/
-typedef struct dh_param { /* Prime numbers %$p$% and %$q$% */
- mp *p, *q; /* Generates order-%$q$% subgroup */
- mp *g;
-} dh_param;
+typedef gprime_param dh_param; /* Group parameters */
-typedef struct dh_pub { /* Shared parameters */
- dh_param dp; /* Public key */
- mp *y;
+typedef struct dh_pub {
+ dh_param dp; /* Shared parameters */
+ mp *y; /* Public key */
} dh_pub;
-typedef struct dh_priv { /* Shared parameters */
- dh_param dp; /* Private key */
- mp *x; /* %$y \equiv g^x \pmod{p}$% */
- mp *y;
+typedef struct dh_priv {
+ dh_param dp; /* Shared parameters */
+ mp *x; /* Private key */
+ mp *y; /* %$y \equiv g^x \pmod{p}$% */
} dh_priv;
/*----- Key fetching ------------------------------------------------------*/
* @unsigned flags@ = other generation flags
* @unsigned steps@ = number of steps to go
* @grand *r@ = random number source
- * @pgen_proc *oev@ = outer event handler function
- * @void *oec@ = argument for the outer event handler
- * @pgen_proc *iev@ = inner event handler function
- * @void *iec@ = argument for the inner event handler
- * @size_t *nf@, @mp ***f@ = output array for factors
+ * @pgen_proc *oev@ = outer event handler function
+ * @void *oec@ = argument for the outer event handler
+ * @pgen_proc *iev@ = inner event handler function
+ * @void *iec@ = argument for the inner event handler
+ * @size_t *nf@, @mp ***f@ = output array for factors
*
* Returns: @PGEN_DONE@ if it worked, @PGEN_ABORT@ if it didn't.
*
pgen_proc */*oev*/, void */*oec*/, pgen_proc */*iev*/,
void */*iec*/, size_t */*nf*/, mp ***/*f*/);
+/* --- @dh_kcdsagen@ --- *
+ *
+ * Arguments: @dh_param *dp@ = pointer to output parameter block
+ * @unsigned ql@ = size of small factor of %$(p - 1)/2$%
+ * @unsigned pl@ = size of %$p$% in bits
+ * @unsigned flags@ = other generation flags (none defined)
+ * @unsigned steps@ = number of steps to go
+ * @grand *r@ = random number source
+ * @pgen_proc *ev@ = event handler function
+ * @void *ec@ = context for the event handler
+ *
+ * Returns: @PGEN_DONE@ if it worked, @PGEN_ABORT@ if it failed.
+ *
+ * Use: Generates a KCDSA prime group. That is, it chooses a prime
+ * %$p$%, such that $%p = 2 q v + 1$%, for primes %$q$% and
+ * %$v$%. The actual group of interest is the subgroup of order
+ * %$q$%.
+ */
+
+extern int dh_kcdsagen(dh_param */*dp*/, unsigned /*ql*/, unsigned /*pl*/,
+ unsigned /*flags*/, unsigned /*steps*/, grand */*r*/,
+ pgen_proc */*ev*/, void */*ec*/);
+
+/* --- @dh_checkparam@ --- *
+ *
+ * Arguments: @keycheck *kc@ = keycheck state
+ * @const dh_param *dp@ = pointer to the parameter set
+ * @mp **v@ = optional vector of factors
+ * @size_t n@ = size of vector
+ *
+ * Returns: Zero if all OK, or return status from function.
+ *
+ * Use: Checks a set of Diffie-Hellman parameters for consistency and
+ * security.
+ */
+
+extern int dh_checkparam(keycheck */*kc*/, const dh_param */*dp*/,
+ mp **/*v*/, size_t /*n*/);
+
+/* ---- @dh_infofromdata@ --- *
+ *
+ * Arguments: @dh_param *dp@ = parameters to fill in
+ * @pdata *pd@ = packed data structure
+ *
+ * Returns: ---
+ *
+ * Use: Fills in a parameters structure from a packed data block.
+ */
+
+struct pdata;
+extern void dh_infofromdata(dh_param */*dp*/, struct pdata */*pd*/);
+
+/* --- @dh_parse@, @dhbin_parse@ --- *
+ *
+ * Arguments: @qd_parse *qd@ = parser context
+ * @dh_param *dp@ = parameters to fill in
+ *
+ * Returns: Zero if OK, nonzero on error.
+ *
+ * Use: Parses a prime/binary group string. This is either one of
+ * the standard group strings, or a %$p$%, %$q$%, %$g$% triple
+ * separated by commas.
+ */
+
+extern int dh_parse(qd_parse */*qd*/, dh_param */*dp*/);
+extern int dhbin_parse(qd_parse */*qd*/, gbin_param */*gb*/);
+
/*----- That's all, folks -------------------------------------------------*/
#ifdef __cplusplus
projects / u / mdw / catacomb / blobdiff