X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/72a6efc4d59568868fc6bbe05d343f777fc1a159..5c3f75ec49019d160806489824fc76652a2ef444:/blkc.h

diff --git a/blkc.h b/blkc.h
index dfbd4f7..77ecf0e 100644
--- a/blkc.h
+++ b/blkc.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: blkc.h,v 1.7 2004/04/08 01:36:15 mdw Exp $
+ * $Id: blkc.h,v 1.8 2004/04/17 09:58:36 mdw Exp $
  *
  * Common definitions for block ciphers
  *
@@ -101,6 +101,10 @@
   BLKC_GLUE(BLKC_STEP_X_, BLKC_ENDIAN(PRE))				\
     (PRE, w)
 
+#define BLKC_ZERO(PRE, w)						\
+  BLKC_GLUE(BLKC_ZERO_, BLKC_TYPE(PRE))					\
+    (PRE, w, BLKC_BITS(PRE))
+
 #define BLKC_SET(PRE, w, x)						\
   BLKC_GLUE(BLKC_SET_X_, BLKC_ENDIAN(PRE))				\
     (PRE, w, x)
@@ -154,6 +158,9 @@
   BLKC_SKEL_X(PRE, BLKC_W(w); const BLKC_WX(wx);,			\
 	      *_w ^= *_wx; _w++; _wx++; )				\
 
+#define BLKC_ZERO_X(PRE, w, n)						\
+  BLKC_SKEL_X(PRE, BLKC_W(w);, *_w++ = 0;)
+
 #define BLKC_STEP_X_B(PRE, w) do {					\
   unsigned _i = PRE##_BLKSZ / 4; BLKC_W(w); uint32 _x = 0;		\
   while (_i && !_x) { _i--; _w[_i] = _x = U32(_w[_i] + 1); }		\
@@ -208,6 +215,7 @@
 #define BLKC_XLOAD_GUTS(op, i) _w[i] ^= op(_p + 4 * i)
 #define BLKC_MOVE_GUTS(op, i) _w[i] = _wx[i]
 #define BLKC_XMOVE_GUTS(op, i) _w[i] ^= _wx[i]
+#define BLKC_ZERO_GUTS(op, i) _w[i] = 0
 
 #define BLKC_STORE_N(PRE, b, w, op, n)					\
   BLKC_GLUE(BLKC_SKEL_, n)						\
@@ -230,6 +238,10 @@
   BLKC_GLUE(BLKC_SKEL_, n)						\
     (PRE, BLKC_W(w); const BLKC_WX(wx);, op, BLKC_MOVE_GUTS)
 
+#define BLKC_ZERO_N(PRE, w, n)						\
+  BLKC_GLUE(BLKC_SKEL_, n)						\
+    (PRE, BLKC_W(w); , op, BLKC_ZERO_GUTS)
+
 #define BLKC_XMOVE_N(PRE, w, wx, n)					\
   BLKC_GLUE(BLKC_SKEL_, n)						\
     (PRE, BLKC_W(w); const BLKC_WX(wx);, op, BLKC_XMOVE_GUTS)