Cyclist.h

/*
Implementation by Ronny Van Keer, hereby denoted as "the implementer".

For more information, feedback or questions, please refer to our website:
https://keccak.team/

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 _Cyclist_h_
#define _Cyclist_h_

#include <stdint.h>
#include "align.h"

#define Cyclist_ModeHash    1
#define Cyclist_ModeKeyed   2

#define Cyclist_PhaseDown   1
#define Cyclist_PhaseUp     2

#ifdef OUTPUT

#include    <stdio.h>

#define KCP_DeclareCyclistStructure(prefix, size, alignment)                    \
            ALIGN(alignment) typedef struct prefix##_CyclistInstanceStruct {    \
            uint8_t         state[size];                                        \
            uint8_t         stateShadow[size];                                  \
            FILE            *file;                                              \
            unsigned int    phase;                                              \
            unsigned int    mode;                                               \
            unsigned int    Rabsorb;                                            \
            unsigned int    Rsqueeze;                                           \
        } prefix##_Instance;

#else

#define KCP_DeclareCyclistStructure(prefix, size, alignment)                    \
            ALIGN(alignment) typedef struct prefix##_CyclistInstanceStruct {    \
            uint8_t         state[size];                                        \
            unsigned int    phase;                                              \
            unsigned int    mode;                                               \
            unsigned int    Rabsorb;                                            \
            unsigned int    Rsqueeze;                                           \
        } prefix##_Instance;

#endif

#define KCP_DeclareCyclistFunctions(prefix) \
    void prefix##_Initialize(prefix##_Instance *instance, const uint8_t *K, size_t KLen, const uint8_t *ID, size_t IDLen, const uint8_t *counter, size_t counterLen); \
    void prefix##_Absorb(prefix##_Instance *instance, const uint8_t *X, size_t XLen); \
    void prefix##_Encrypt(prefix##_Instance *instance, const uint8_t *P, uint8_t *C, size_t PLen); \
    void prefix##_Decrypt(prefix##_Instance *instance, const uint8_t *C, uint8_t *P, size_t CLen); \
    void prefix##_Squeeze(prefix##_Instance *instance, uint8_t *Y, size_t YLen); \
    void prefix##_SqueezeKey(prefix##_Instance *instance, uint8_t *K, size_t KLen); \
    void prefix##_Ratchet(prefix##_Instance *instance);

#endif