/* -*-c-*-
*
- * $Id: ghash.h,v 1.1 1999/12/10 23:16:01 mdw Exp $
+ * $Id: ghash.h,v 1.7 2004/04/08 01:36:15 mdw Exp $
*
* Generic hash function interface
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: ghash.h,v $
- * Revision 1.1 1999/12/10 23:16:01 mdw
- * Generic interface.
- *
- */
-
#ifndef CATACOMB_GHASH_H
#define CATACOMB_GHASH_H
#include <stddef.h>
-/*----- Generic hash function interface -----------------------------------*/
+#include <mLib/bits.h>
-typedef struct gchash_base {
- const char *name; /* Name of the hash function */
- size_t hashsz; /* Size of output hash */
-} gchash_base;
+/*----- Generic hash function interface -----------------------------------*/
typedef struct ghash {
const struct ghash_ops *ops; /* Pointer to hash operations */
} ghash;
typedef struct ghash_ops {
- const gchash_base *b; /* Pointer to basic information */
+ const struct gchash *c; /* Pointer to hash class */
void (*hash)(ghash */*h*/, const void */*p*/, size_t /*sz*/); /* Hash */
- void (*done)(ghash */*h*/, void */*buf*/); /* Write result */
+ 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))
+
typedef struct gchash {
- gchash_base b; /* Basic bits of information */
+ 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