/* -*-c-*-
*
- * $Id: sha.h,v 1.1 1999/09/03 08:41:12 mdw Exp $
+ * $Id: sha.h,v 1.6 2004/04/08 01:36:15 mdw Exp $
*
* Implementation of the SHA-1 hash function
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: sha.h,v $
- * Revision 1.1 1999/09/03 08:41:12 mdw
- * Initial import.
- *
- */
-
/*----- Notes on the SHA-1 hash function ----------------------------------*
*
* SHA (Secure Hash Algorithm) was designed by the NSA, for use with the
- * Digital Signature Algorithm. It has gained wide acceptance since then,
- * and is probably now most people's collision-resistant function of choice.
- * The author prefers RIPEMD-160, for no particularly good reasons.
+ * Digital Signature Algorithm. It is defined by FIPS 180-1. It has gained
+ * wide acceptance since its initial publication, and is probably now most
+ * people's collision-resistant function of choice. The author prefers
+ * RIPEMD-160, for no particularly good reasons.
*/
-#ifndef SHA_H
-#define SHA_H
+#ifndef CATACOMB_SHA_H
+#define CATACOMB_SHA_H
#ifdef __cplusplus
extern "C" {
#include <mLib/bits.h>
+#ifndef CATACOMB_GHASH_H
+# include "ghash.h"
+#endif
+
/*----- Magic numbers -----------------------------------------------------*/
#define SHA_BUFSZ 64
#define SHA_HASHSZ 20
+#define SHA_STATESZ 20
/*----- Data structures ---------------------------------------------------*/
typedef struct sha_ctx {
uint32 a, b, c, d, e; /* Chaining variables */
- unsigned long count; /* Byte count so far */
- int off; /* Offset into buffer */
+ uint32 nl, nh; /* Byte count so far */
+ unsigned off; /* Offset into buffer */
octet buf[SHA_BUFSZ]; /* Accumulation buffer */
} sha_ctx;
extern unsigned long sha_state(sha_ctx */*ctx*/, void */*state*/);
+/*----- Generic hash interface --------------------------------------------*/
+
+extern const gchash sha;
+
/*----- That's all, folks -------------------------------------------------*/
#ifdef __cplusplus