/* 
 * Copyright Ó 1992 by Xerox Corporation.  All rights reserved.
 * September 30, 1992
 * A straightforward implementation of NIST's proposed Secure 
 * Hash Standard (SHS), dated 22 January 1992.
 *
 * To use: allocate an SHS_CTX and pass it to SHSInit;
 * repeatedly call SHSUpdate on successive chunks of the message
 * then call SHSFinal(hash, ctx).
 * The hash is in ctx->state, as 4 byte integers
 * and, properly reorganized for endian-ness, in *hash.
 *
 * These definitions follow the model of the MD5 reference
 * implementation so it should be easy to to convert clients
 * between the two.  However, the two hash functions produce
 * different-sized hashes so client conversion is slightly harder than
 * trivial.
 */

typedef unsigned long UINT4;

typedef struct {
    UINT4 state[5];                             /* state (ABCDE) */
    UINT4 count[2];        /* number of bits */
    unsigned char buffer[64];                   /* input buffer */
} SHS_CTX;

#define PROTO_LIST(x) ();

void SHSInit PROTO_LIST ((SHS_CTX *));

void SHSUpdate PROTO_LIST
    ((SHS_CTX *, unsigned char *, unsigned int));
    /* SHSUpdate( ctx, buffer, bytes ) */
	
void SHSFinal PROTO_LIST ((unsigned char [20], SHS_CTX *));
    /* SHSFinal( hash, ctx ) */