dss_sha.h

Sample code for use on smp 863x processor.

/*
 * samples/dss_sha.h
 *
 * Copyright (c) 2001-2004 Sigma Designs, Inc. 
 * All Rights Reserved. Proprietary and Confidential.
 *
 */
 
/**
  @file samples/dss_sha.h
  @brief DSS/SHA1 signature check
   
  @author Christian Wolff
*/

#ifndef __DSS_SHA_H__
#define __DSS_SHA_H__

typedef RMuint16 * Bignum;

struct dss_key {
	Bignum p, q, g, y, x;
};

typedef struct {
	RMuint32 h[5];
	RMuint8 block[64];
	RMint32 blkused;
	RMuint32 lenhi, lenlo;
} RMSHA_State;

void RMSHA_Init(RMSHA_State * s);
void RMSHA_Bytes(RMSHA_State * s, void *p, RMint32 len);
void RMSHA_Final(RMSHA_State * s, RMuint8 *output);
void RMSHA_Simple(void *p, RMint32 len, RMuint8 *output);
void RMSHATransform(RMuint32 * digest, RMuint32 * data);

extern Bignum Zero, One;
Bignum copybn(Bignum b);
void freebn(Bignum b);
Bignum modpow(Bignum base, Bignum exp, Bignum mod);
Bignum modmul(Bignum a, Bignum b, Bignum mod);
Bignum bignum_from_bytes(RMuint8 *data, RMint32 nbytes);
Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);
Bignum modinv(Bignum number, Bignum modulus);
RMint32 bignum_cmp(Bignum a, Bignum b);

#endif  // __DSS_SHA_H__