/* -*-c-*-
*
- * $Id: blkc.h,v 1.1 1999/09/03 08:41:11 mdw Exp $
+ * $Id$
*
* Common definitions for block ciphers
*
* (c) 1999 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of Catacomb.
*
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
- *
+ *
* Catacomb is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
- *
+ *
* You should have received a copy of the GNU Library General Public
* License along with Catacomb; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: blkc.h,v $
- * Revision 1.1 1999/09/03 08:41:11 mdw
- * Initial import.
- *
- */
-
-#ifndef BLKC_H
-#define BLKC_H
+#ifndef CATACOMB_BLKC_H
+#define CATACOMB_BLKC_H
#ifdef __cplusplus
extern "C" {
/*----- Header files ------------------------------------------------------*/
+#include <assert.h>
+
#include <mLib/bits.h>
/*----- Theory of operation -----------------------------------------------*
#define BLKC_FIRST(x, y, z) x
#define BLKC_SECOND(x, y, z) y
#define BLKC_THIRD(x, y, z) z
-#define BLKC_TYPE(PRE) BLKC_APPLY(BLKC_FIRST, PRE ## _CLASS)
-#define BLKC_ENDIAN(PRE) BLKC_APPLY(BLKC_SECOND, PRE ## _CLASS)
-#define BLKC_BITS(PRE) BLKC_APPLY(BLKC_THIRD, PRE ## _CLASS)
+#define BLKC_TYPE(PRE) BLKC_APPLY(BLKC_FIRST, PRE##_CLASS)
+#define BLKC_ENDIAN(PRE) BLKC_APPLY(BLKC_SECOND, PRE##_CLASS)
+#define BLKC_BITS(PRE) BLKC_APPLY(BLKC_THIRD, PRE##_CLASS)
#define BLKC_STORE_E(PRE) BLKC_GLUE(STORE32_, BLKC_ENDIAN(PRE))
#define BLKC_LOAD_E(PRE) BLKC_GLUE(LOAD32_, BLKC_ENDIAN(PRE))
BLKC_GLUE(BLKC_XMOVE_, BLKC_TYPE(PRE)) \
(PRE, w, wx, BLKC_BITS(PRE))
+#define BLKC_STEP(PRE, w) \
+ 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)
+
+#define BLKC_SHOW(PRE, tag, w) do { \
+ fputs(tag ": ", stdout); \
+ BLKC_SKEL_X(PRE, BLKC_W(w);, printf("%08x ", *_w++);); \
+ fputc('\n', stdout); \
+} while (0)
+
/* --- General implementation skeleton --- */
#define BLKC_SKEL(PRE, decl, guts) do { \
#define BLKC_P(p) register octet *_p = (octet *)(p)
#define BLKC_W(w) register uint32 *_w = (w)
-#define BLKC_WX(wx) register uint32 *_wx = (wx);
+#define BLKC_WX(wx) register uint32 *_wx = (wx)
/* --- Implementation for unusual block sizes --- */
#define BLKC_SKEL_X(PRE, decl, guts) \
- BLKC_SKEL(PRE, int _i; decl, \
- for (_i = 0; _i < PRE ## _BLKSZ / 4; _i++) { \
+ BLKC_SKEL(PRE, unsigned _i; decl, \
+ for (_i = 0; _i < PRE##_BLKSZ / 4; _i++) { \
guts \
})
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); } \
+} while (0)
+
+#define BLKC_STEP_X_L(PRE, w) do { \
+ unsigned _i = 0; BLKC_W(w); uint32 _x = 0; \
+ while (_i < PRE##_BLKSZ / 4 && !_x) \
+ { _w[_i] = _x = U32(_w[_i] + 1); _i++; } \
+} while (0)
+
+#define BLKC_SET_X_B(PRE, w, x) do { \
+ unsigned _i; BLKC_W(w); unsigned long _x = x; \
+ for (_i = 0; _i < PRE##_BLKSZ / 4; _i++) { \
+ *_w++ = U32(_x); \
+ _x = ((_x & ~MASK32) >> 16) >> 16; \
+ } \
+} while (0)
+
+#define BLKC_SET_X_L(PRE, w, x) do { \
+ unsigned _i; BLKC_W(w); unsigned long _x = x; _w += PRE##_BLKSZ / 4; \
+ for (_i = 0; _i < PRE##_BLKSZ / 4; _i++) { \
+ *--_w = U32(_x); \
+ _x = ((_x & ~MASK32) >> 16) >> 16; \
+ } \
+} while (0)
+
/* --- Implementation for known block sizes --- */
#define BLKC_SKEL_64(PRE, decl, op, guts) \
BLKC_SKEL(PRE, decl, guts(op, 0); guts(op, 1);)
+#define BLKC_SKEL_96(PRE, decl, op, guts) \
+ BLKC_SKEL(PRE, decl, guts(op, 0); guts(op, 1); guts(op, 2);)
+
#define BLKC_SKEL_128(PRE, decl, op, guts) \
BLKC_SKEL(PRE, decl, guts(op, 0); guts(op, 1); guts(op, 2); guts(op, 3);)
+#define BLKC_SKEL_192(PRE, decl, op, guts) \
+ BLKC_SKEL(PRE, decl, \
+ guts(op, 0); guts(op, 1); guts(op, 2); guts(op, 3); \
+ guts(op, 4); guts(op, 5);)
+
+#define BLKC_SKEL_256(PRE, decl, op, guts) \
+ BLKC_SKEL(PRE, decl, \
+ guts(op, 0); guts(op, 1); guts(op, 2); guts(op, 3); \
+ guts(op, 4); guts(op, 5); guts(op, 6); guts(op, 7);)
+
#define BLKC_STORE_GUTS(op, i) op(_p + 4 * i, _w[i])
#define BLKC_XSTORE_GUTS(op, i) op(_p + 4 * i, _w[i] ^ _wx[i])
#define BLKC_LOAD_GUTS(op, i) _w[i] = op(_p + 4 * i)
#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) \
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)
#ifdef TEST_RIG
+#include <string.h>
+
#include <mLib/quis.h>
#include <mLib/testrig.h>
-#define BLKC_TEST(PRE, pre) \
+#define BLKC_VERIFY(PRE, pre) \
\
-static int verify(dstr *v) \
+static int pre##_verify(dstr *v) \
{ \
- pre ## _ctx k; \
- uint32 p[PRE ## _BLKSZ / 4]; \
- uint32 c[PRE ## _BLKSZ / 4]; \
- uint32 d[PRE ## _BLKSZ / 4]; \
+ pre##_ctx k; \
+ uint32 p[PRE##_BLKSZ / 4]; \
+ uint32 c[PRE##_BLKSZ / 4]; \
+ uint32 d[PRE##_BLKSZ / 4]; \
dstr b = DSTR_INIT; \
int ok = 1; \
\
/* --- Initialize the key buffer --- */ \
\
- dstr_ensure(&b, PRE ## _BLKSZ); \
- b.len = PRE ## _BLKSZ; \
- pre ## _init(&k, v[0].buf, v[0].len); \
+ dstr_ensure(&b, PRE##_BLKSZ); \
+ b.len = PRE##_BLKSZ; \
+ pre##_init(&k, v[0].buf, v[0].len); \
BLKC_LOAD(PRE, p, v[1].buf); \
BLKC_LOAD(PRE, c, v[2].buf); \
\
/* --- Test encryption --- */ \
\
BLKC_MOVE(PRE, d, p); \
- pre ## _eblk(&k, d, d); \
+ pre##_eblk(&k, d, d); \
BLKC_STORE(PRE, b.buf, d); \
- if (memcmp(b.buf, v[2].buf, PRE ## _BLKSZ)) { \
+ if (memcmp(b.buf, v[2].buf, PRE##_BLKSZ)) { \
ok = 0; \
printf("\nfail encryption:" \
- "\n\tkey = "); \
+ "\n\tkey = "); \
type_hex.dump(&v[0], stdout); \
printf("\n\tplaintext = "); type_hex.dump(&v[1], stdout); \
printf("\n\texpected = "); type_hex.dump(&v[2], stdout); \
/* --- Test decryption --- */ \
\
BLKC_MOVE(PRE, d, c); \
- pre ## _dblk(&k, d, d); \
+ pre##_dblk(&k, d, d); \
BLKC_STORE(PRE, b.buf, d); \
- if (memcmp(b.buf, v[1].buf, PRE ## _BLKSZ)) { \
+ if (memcmp(b.buf, v[1].buf, PRE##_BLKSZ)) { \
ok = 0; \
printf("\nfail decryption:" \
- "\n\tkey = "); \
+ "\n\tkey = "); \
type_hex.dump(&v[0], stdout); \
printf("\n\tciphertext = "); type_hex.dump(&v[2], stdout); \
printf("\n\texpected = "); type_hex.dump(&v[1], stdout); \
/* --- Return --- */ \
\
return (ok); \
-} \
+}
+
+#define BLKC_TEST(PRE, pre) \
+ \
+BLKC_VERIFY(PRE, pre) \
\
-static test_chunk defs[] = { \
- { #pre, verify, { &type_hex, &type_hex, &type_hex, 0 } }, \
- { #pre "-sched", verify, { &type_hex, &type_hex, &type_hex, 0 } }, \
+static const test_chunk defs[] = { \
+ { #pre, pre##_verify, { &type_hex, &type_hex, &type_hex, 0 } }, \
{ 0, 0, { 0 } } \
}; \
\
}
#else
+# define BLKC_VERIFY(PRE, pre)
# define BLKC_TEST(PRE, pre)
#endif
projects / u / mdw / catacomb / blobdiff