X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/3688eb757240b2332f67ec827be8caf6f6abe924..02dfbd5b7af7816959dbd39c1fe628451204e35f:/dh.h

diff --git a/dh.h b/dh.h
index 8288740..689d8f1 100644
--- a/dh.h
+++ b/dh.h
@@ -166,6 +166,29 @@ extern int dh_limlee(dh_param */*dp*/, unsigned /*ql*/, unsigned /*pl*/,
 		     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
@@ -182,6 +205,19 @@ extern int dh_limlee(dh_param */*dp*/, unsigned /*ql*/, unsigned /*pl*/,
 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