/* -*-c-*-
*
- * $Id: ghash.h,v 1.3 2000/07/02 18:27:42 mdw Exp $
+ * $Id$
*
* Generic hash function interface
*
* (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: ghash.h,v $
- * Revision 1.3 2000/07/02 18:27:42 mdw
- * (ghash->ops->done): Interface change. Passing in a null buffer pointer
- * uses a buffer internal to the ghash object. The operation returns the
- * address of the buffer it used. Clients of generic hashes no longer need
- * to use dynamically allocated memory for hash results.
- *
- * Revision 1.2 2000/06/17 11:22:17 mdw
- * Minor changes in the generic hash interface.
- *
- * Revision 1.1 1999/12/10 23:16:01 mdw
- * Generic interface.
- *
- */
-
#ifndef CATACOMB_GHASH_H
#define CATACOMB_GHASH_H
#include <stddef.h>
+#include <mLib/bits.h>
+
/*----- Generic hash function interface -----------------------------------*/
typedef struct ghash {
void (*hash)(ghash */*h*/, const void */*p*/, size_t /*sz*/); /* Hash */
octet *(*done)(ghash */*h*/, void */*buf*/); /* Write result */
void (*destroy)(ghash */*h*/); /* Destroy hash block */
+ ghash *(*copy)(ghash */*h*/); /* Make a copy of the hash context */
} ghash_ops;
+#define GH_INIT(ch) (ch)->init()
+#define GH_CLASS(h) (h)->ops->c
+#define GH_HASH(h, p, sz) (h)->ops->hash((h), (p), (sz))
+#define GH_DONE(h, buf) (h)->ops->done((h), (buf))
+#define GH_DESTROY(h) (h)->ops->destroy((h))
+#define GH_COPY(h) (h)->ops->copy((h))
+
+#define GH_HASHU_(h, n, W) do { \
+ TY_U##W n_ = (n); octet b_[SZ_##W]; \
+ STORE##W(b_, n_); GH_HASH((h), b_, SZ_##W); \
+} while (0)
+#define GH_HASHU8(h, n) GH_HASHU_((h), (n), 8)
+#define GH_HASHU16(h, n) GH_HASHU_((h), (n), 16)
+#define GH_HASHU16_B(h, n) GH_HASHU_((h), (n), 16_B)
+#define GH_HASHU16_L(h, n) GH_HASHU_((h), (n), 16_L)
+#define GH_HASHU24(h, n) GH_HASHU_((h), (n), 24)
+#define GH_HASHU24_B(h, n) GH_HASHU_((h), (n), 24_B)
+#define GH_HASHU24_L(h, n) GH_HASHU_((h), (n), 24_L)
+#define GH_HASHU32(h, n) GH_HASHU_((h), (n), 32)
+#define GH_HASHU32_B(h, n) GH_HASHU_((h), (n), 32_B)
+#define GH_HASHU32_L(h, n) GH_HASHU_((h), (n), 32_L)
+#ifdef HAVE_UINT64
+# define GH_HASHU64(h, n) GH_HASHU_((h), (n), 64)
+# define GH_HASHU64_B(h, n) GH_HASHU_((h), (n), 64_B)
+# define GH_HASHU64_L(h, n) GH_HASHU_((h), (n), 64_L)
+#endif
+
+#define GH_HASHBUF_(h, p, sz, W) do { \
+ size_t sz_ = (sz); assert(sz_ <= MASK##W); \
+ GH_HASHU_(h, sz_, W); GH_HASH(h, (p), sz_); \
+} while (0)
+#define GH_HASHBUF8(h, p, sz) GH_HASHBUF_((h), (p), (sz), 8)
+#define GH_HASHBUF16(h, p, sz) GH_HASHBUF_((h), (p), (sz), 16)
+#define GH_HASHBUF16_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 16_L)
+#define GH_HASHBUF16_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 16_B)
+#define GH_HASHBUF24(h, p, sz) GH_HASHBUF_((h), (p), (sz), 24)
+#define GH_HASHBUF24_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 24_L)
+#define GH_HASHBUF24_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 24_B)
+#define GH_HASHBUF32(h, p, sz) GH_HASHBUF_((h), (p), (sz), 32)
+#define GH_HASHBUF32_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 32_L)
+#define GH_HASHBUF32_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 32_B)
+#ifdef HAVE_UINT64
+# define GH_HASHBUF64(h, p, sz) GH_HASHBUF_((h), (p), (sz), 64)
+# define GH_HASHBUF64_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 64_L)
+# define GH_HASHBUF64_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 64_B)
+#endif
+
+#define GH_HASHSTR_(h, p, W) do { \
+ const char *p_ = (p); GH_HASHBUF_((h), p_, strlen(p_), W); \
+} while (0)
+#define GH_HASHSTR8(h, p) GH_HASHSTR_((h), (p), 8)
+#define GH_HASHSTR16(h, p) GH_HASHSTR_((h), (p), 16)
+#define GH_HASHSTR16_L(h, p) GH_HASHSTR_((h), (p), 16_L)
+#define GH_HASHSTR16_B(h, p) GH_HASHSTR_((h), (p), 16_B)
+#define GH_HASHSTR24(h, p) GH_HASHSTR_((h), (p), 24)
+#define GH_HASHSTR24_L(h, p) GH_HASHSTR_((h), (p), 24_L)
+#define GH_HASHSTR24_B(h, p) GH_HASHSTR_((h), (p), 24_B)
+#define GH_HASHSTR32(h, p) GH_HASHSTR_((h), (p), 32)
+#define GH_HASHSTR32_L(h, p) GH_HASHSTR_((h), (p), 32_L)
+#define GH_HASHSTR32_B(h, p) GH_HASHSTR_((h), (p), 32_B)
+#ifdef HAVE_UINT64
+# define GH_HASHSTR64(h, p) GH_HASHSTR_((h), (p), 64)
+# define GH_HASHSTR64_L(h, p) GH_HASHSTR_((h), (p), 64_L)
+# define GH_HASHSTR64_B(h, p) GH_HASHSTR_((h), (p), 64_B)
+#endif
+
+#define GH_HASHSTRZ(h, p) do { \
+ const char *p_ = (p); GH_HASH((h), p_, strlen(p_) + 1); \
+} while (0)
+#define GH_HASHSTR(h, p) do { \
+ const char *p_ = (p); GH_HASH((h), p_, strlen(p_)); \
+} while (0)
+
typedef struct gchash {
const char *name; /* Name of the hash function */
size_t hashsz; /* Size of output hash */
ghash *(*init)(void); /* Create a new hash instance */
+ size_t bufsz; /* Buffer size, or zero */
} gchash;
+/*----- Tables ------------------------------------------------------------*/
+
+extern const gchash *const ghashtab[];
+
+/* --- @ghash_byname@ --- *
+ *
+ * Arguments: @const char *p@ = pointer to name string
+ *
+ * Returns: The named cipher class, or null.
+ */
+
+extern const gchash *ghash_byname(const char */*p*/);
+
/*----- That's all, folks -------------------------------------------------*/
#ifdef __cplusplus