/* -*-c-*-
*
- * $Id: ecb-def.h,v 1.1 1999/12/10 23:16:39 mdw Exp $
+ * $Id: ecb-def.h,v 1.4 2004/04/17 09:58:37 mdw Exp $
*
* Definitions electronic code book mode
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: ecb-def.h,v $
- * Revision 1.1 1999/12/10 23:16:39 mdw
- * Split mode macros into interface and implementation.
- *
- */
-
#ifndef CATACOMB_ECB_DEF_H
#define CATACOMB_ECB_DEF_H
#include <mLib/bits.h>
#include <mLib/sub.h>
+#ifndef CATACOMB_ARENA_H
+# include "arena.h"
+#endif
+
#ifndef CATACOMB_BLKC_H
# include "blkc.h"
#endif
# include "gcipher.h"
#endif
+#ifndef CATACOMB_PARANOIA_H
+# include "paranoia.h"
+#endif
+
/*----- Macros ------------------------------------------------------------*/
/* --- @ECB_DEF@ --- *
\
while (sz >= 2 * PRE##_BLKSZ || sz == PRE##_BLKSZ) { \
uint32 x[PRE##_BLKSZ / 4]; \
- BLKC_LOAD(PRE, x, s); \
+ if (!s) \
+ BLKC_ZERO(PRE, x); \
+ else { \
+ BLKC_LOAD(PRE, x, s); \
+ s += PRE##_BLKSZ; \
+ } \
pre##_eblk(&ctx->ctx, x, x); \
- BLKC_STORE(PRE, d, x); \
- s += PRE##_BLKSZ; \
- d += PRE##_BLKSZ; \
+ if (d) { \
+ BLKC_STORE(PRE, d, x); \
+ d += PRE##_BLKSZ; \
+ } \
sz -= PRE##_BLKSZ; \
} \
\
* out yet, because I've not read the partial plaintext block. \
*/ \
\
- BLKC_LOAD(PRE, x, s); \
+ if (!s) \
+ BLKC_ZERO(PRE, x); \
+ else { \
+ BLKC_LOAD(PRE, x, s); \
+ s += PRE##_BLKSZ; \
+ } \
pre##_eblk(&ctx->ctx, x, x); \
BLKC_STORE(PRE, b, x); \
\
* ciphertext block. \
*/ \
\
- s += PRE##_BLKSZ; \
- d += PRE##_BLKSZ; \
+ if (d) d += PRE##_BLKSZ; \
for (i = 0; i < sz; i++) { \
register octet y = b[i]; \
b[i] = s[i]; \
- d[i] = y; \
+ if (d) d[i] = y; \
} \
BLKC_LOAD(PRE, x, b); \
pre##_eblk(&ctx->ctx, x, x); \
- BLKC_STORE(PRE, d - PRE##_BLKSZ, x); \
+ if (d) BLKC_STORE(PRE, d - PRE##_BLKSZ, x); \
} \
\
/* --- Done --- */ \
\
static gcipher *ginit(const void *k, size_t sz) \
{ \
- gctx *g = CREATE(gctx); \
+ gctx *g = S_CREATE(gctx); \
g->c.ops = &gops; \
pre##_ecbinit(&g->k, k, sz, 0); \
return (&g->c); \
static void gdestroy(gcipher *c) \
{ \
gctx *g = (gctx *)c; \
- DESTROY(g); \
+ BURN(*g); \
+ S_DESTROY(g); \
} \
\
static const gcipher_ops gops = { \
- &pre##_ecb.b, \
- gencrypt, gdecrypt, gdestroy, 0, 0 \
+ &pre##_ecb, \
+ gencrypt, gdecrypt, gdestroy, 0, 0 \
}; \
\
const gccipher pre##_ecb = { \
- { #pre "-ecb", PRE##_KEYSZ, PRE##_BLKSZ }, \
+ #pre "-ecb", pre##_keysz, PRE##_BLKSZ, \
ginit \
}; \
\