catcrypt: Implement symmetric key-encapsulation and signature schemes.

[u/mdw/catacomb] / ghash-def.h

diff --git a/ghash-def.h b/ghash-def.h
index 91cc6f0..3f0266c 100644 (file)
--- a/ghash-def.h
+++ b/ghash-def.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: ghash-def.h,v 1.1 1999/12/10 23:21:37 mdw Exp $
+ * $Id: ghash-def.h,v 1.7 2004/04/08 01:36:15 mdw Exp $
  *
  * Definitions for generic hash interface
  *
@@ -27,14 +27,6 @@
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: ghash-def.h,v $
- * Revision 1.1  1999/12/10 23:21:37  mdw
- * Generic interface.
- *
- */
-
 #ifndef CATACOMB_GHASH_DEF_H
 #define CATACOMB_GHASH_DEF_H
 
@@ -47,10 +39,18 @@
 #include <mLib/bits.h>
 #include <mLib/sub.h>
 
+#ifndef CATACOMB_ARENA_H
+#  include "arena.h"
+#endif
+
 #ifndef CATACOMB_GHASH_H
 #  include "ghash.h"
 #endif
 
+#ifndef CATACOMB_PARANOIA_H
+#  include "paranoia.h"
+#endif
+
 /*----- Generic hash function interface -----------------------------------*/
 
 /* --- @GHASH_DEF@ --- *
@@ -67,11 +67,12 @@ static const ghash_ops gops;                                                \
 typedef struct gctx {                                                  \
   ghash h;                                                             \
   pre##_ctx c;                                                         \
+  octet buf[PRE##_HASHSZ];                                             \
 } gctx;                                                                        \
                                                                        \
 static ghash *ghinit(void)                                             \
 {                                                                      \
-  gctx *g = CREATE(gctx);                                              \
+  gctx *g = S_CREATE(gctx);                                            \
   g->h.ops = &gops;                                                    \
   pre##_init(&g->c);                                                   \
   return (&g->h);                                                      \
@@ -83,20 +84,33 @@ static void ghhash(ghash *h, const void *p, size_t sz)                      \
   pre##_hash(&g->c, p, sz);                                            \
 }                                                                      \
                                                                        \
-static void ghdone(ghash *h, void *buf)                                        \
+static octet *ghdone(ghash *h, void *buf)                              \
 {                                                                      \
   gctx *g = (gctx *)h;                                                 \
+  if (!buf)                                                            \
+    buf = g->buf;                                                      \
   pre##_done(&g->c, buf);                                              \
+  return (buf);                                                                \
 }                                                                      \
                                                                        \
 static void ghdestroy(ghash *h)                                                \
 {                                                                      \
   gctx *g = (gctx *)h;                                                 \
-  DESTROY(g);                                                          \
+  BURN(*g);                                                            \
+  S_DESTROY(g);                                                                \
+}                                                                      \
+                                                                       \
+static ghash *ghcopy(ghash *h)                                         \
+{                                                                      \
+  gctx *g = (gctx *)h;                                                 \
+  gctx *gg = S_CREATE(gctx);                                           \
+  memcpy(gg, g, sizeof(gctx));                                         \
+  return (&gg->h);                                                     \
 }                                                                      \
                                                                        \
-static const ghash_ops gops = { &pre.b, ghhash, ghdone, ghdestroy };   \
-const gchash pre = { { #pre, PRE##_HASHSZ }, ghinit };
+static const ghash_ops gops =                                          \
+  { &pre, ghhash, ghdone, ghdestroy, ghcopy };                         \
+const gchash pre = { #pre, PRE##_HASHSZ, ghinit, PRE##_BUFSZ };
 
 /*----- That's all, folks -------------------------------------------------*/