Uprating of the passphrase pixie.

[u/mdw/catacomb] / group.h

diff --git a/group.h b/group.h
index 9578f33..5ea7786 100644 (file)
--- a/group.h
+++ b/group.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: group.h,v 1.5 2004/04/17 09:58:37 mdw Exp $
+ * $Id$
  *
  * General cyclic group abstraction
  *
@@ -80,7 +80,11 @@ typedef struct group_expfactor {
 } group_expfactor;
 
 typedef struct group_ops {
+
+  /* --- General information --- */
+
   unsigned ty;                         /* Type of this group */
+  const char *name;                    /* Textual name string */
 
   /* --- Memory management --- */
 
@@ -136,6 +140,9 @@ enum {
   GTY_EC                               /* Elliptic curve group */
 };
 
+#define G_NAME(g)              (g)->ops->name
+#define G_TYPE(g)              (g)->ops->ty
+
 #define G_DESTROYGROUP(g)      (g)->ops->destroygroup((g))
 #define G_CREATE(g)            (g)->ops->create((g))
 #define G_COPY(g, d, x)                (g)->ops->copy((g), (d), (x))
@@ -334,6 +341,22 @@ typedef struct gprime_param {
 
 group *group_prime(const gprime_param */*gp*/);
 
+/*----- Binary field subgroups --------------------------------------------*/
+
+typedef gprime_param gbin_param;
+
+/* --- @group_binary@ --- *
+ *
+ * Arguments:  @const gbin_param *gb@ = group parameters
+ *
+ * Returns:    A pointer to the group, or null.
+ *
+ * Use:                Constructs an abstract group interface for a subgroup of a
+ *             prime field.  Group elements are @mp *@ pointers.
+ */
+
+group *group_binary(const gbin_param */*gp*/);
+
 /*----- Elliptic curve groups ---------------------------------------------*/
 
 /* --- @group_ec@ --- *