KeccakSponge.h

/*
Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
denoted as "the implementer".
 
For more information, feedback or questions, please refer to our websites:
http://keccak.noekeon.org/
http://keyak.noekeon.org/
http://ketje.noekeon.org/
 
To the extent possible under law, the implementer has waived all copyright
and related or neighboring rights to the source code in this file.
http://creativecommons.org/publicdomain/zero/1.0/
*/
 
#ifndef _KeccakSponge_h_
#define _KeccakSponge_h_
 
#ifdef DontReallyInclude_DocumentationOnly
int Prefix_Sponge(unsigned int rate, unsigned int capacity, const unsigned char* input, size_t inputByteLen, unsigned char suffix,
                  unsigned char* output, size_t outputByteLen);
 
int Prefix_SpongeInitialize(Prefix_SpongeInstance* spongeInstance, unsigned int rate, unsigned int capacity);
 
int Prefix_SpongeAbsorb(Prefix_SpongeInstance* spongeInstance, const unsigned char* data, size_t dataByteLen);
 
int Prefix_SpongeAbsorbLastFewBits(Prefix_SpongeInstance* spongeInstance, unsigned char delimitedData);
 
int Prefix_SpongeSqueeze(Prefix_SpongeInstance* spongeInstance, unsigned char* data, size_t dataByteLen);
#endif
 
#include <string.h>
#include "align.h"
 
#define KCP_DeclareSpongeStructure(prefix, size, alignment) \
  ALIGN(alignment) typedef struct prefix##_SpongeInstanceStruct { \
    unsigned char state[size]; \
    unsigned int rate; \
    unsigned int byteIOIndex; \
    int squeezing; \
  } prefix##_SpongeInstance;
 
#define KCP_DeclareSpongeFunctions(prefix) \
  int prefix##_Sponge(unsigned int rate, unsigned int capacity, const unsigned char *input, size_t inputByteLen, unsigned char suffix, unsigned char *output, size_t outputByteLen); \
  int prefix##_SpongeInitialize(prefix##_SpongeInstance *spongeInstance, unsigned int rate, unsigned int capacity); \
  int prefix##_SpongeAbsorb(prefix##_SpongeInstance *spongeInstance, const unsigned char *data, size_t dataByteLen); \
  int prefix##_SpongeAbsorbLastFewBits(prefix##_SpongeInstance *spongeInstance, unsigned char delimitedData); \
  int prefix##_SpongeSqueeze(prefix##_SpongeInstance *spongeInstance, unsigned char *data, size_t dataByteLen);
 
#ifndef KeccakP200_excluded
#include "KeccakP-200-SnP.h"
KCP_DeclareSpongeStructure(KeccakWidth200, KeccakP200_stateSizeInBytes, KeccakP200_stateAlignment)
KCP_DeclareSpongeFunctions(KeccakWidth200)
#endif
 
#ifndef KeccakP400_excluded
#include "KeccakP-400-SnP.h"
KCP_DeclareSpongeStructure(KeccakWidth400, KeccakP400_stateSizeInBytes, KeccakP400_stateAlignment)
KCP_DeclareSpongeFunctions(KeccakWidth400)
#endif
 
#ifndef KeccakP800_excluded
#include "KeccakP-800-SnP.h"
KCP_DeclareSpongeStructure(KeccakWidth800, KeccakP800_stateSizeInBytes, KeccakP800_stateAlignment)
KCP_DeclareSpongeFunctions(KeccakWidth800)
#endif
 
#ifndef KeccakP1600_excluded
#include "KeccakP-1600-SnP.h"
KCP_DeclareSpongeStructure(KeccakWidth1600, KeccakP1600_stateSizeInBytes, KeccakP1600_stateAlignment)
KCP_DeclareSpongeFunctions(KeccakWidth1600)
#endif
 
#ifndef KeccakP1600_excluded
#include "KeccakP-1600-SnP.h"
KCP_DeclareSpongeStructure(KeccakWidth1600_12rounds, KeccakP1600_stateSizeInBytes, KeccakP1600_stateAlignment)
KCP_DeclareSpongeFunctions(KeccakWidth1600_12rounds)
#endif
 
#endif