wotsx2.h

#if !defined( WOTSX2_H_ )
#define WOTSX2_H_ 

#include <string.h>
#include "params.h"

/*
 * This is here to provide an interface to the internal wots_gen_leafx2
 * routine.  While this routine is not referenced in the package outside of
 * wots.c, it is called from the stand-alone benchmark code to characterize
 * the performance
 */
struct leaf_info_x2 {
    unsigned char *wots_sig;
    uint32_t wots_sign_leaf; /* The index of the WOTS we're using to sign */
    uint32_t *wots_steps;
    uint32_t leaf_addr[2*8];
    uint32_t pk_addr[2*8];
};

/* Macro to set the leaf_info to something 'benign', that is, it would */
/* run with the same time as it does during the real signing process */
/* Used only by the benchmark code */
#define INITIALIZE_LEAF_INFO_X2(info, addr, step_buffer) { \
    info.wots_sig = 0;             \
    info.wots_sign_leaf = ~0;      \
    info.wots_steps = step_buffer; \
    int i;                         \
    for (i=0; i<2; i++) {          \
        memcpy( &info.leaf_addr[8*i], addr, 32 ); \
        memcpy( &info.pk_addr[8*i], addr, 32 ); \
    } \
}

#define wots_gen_leafx2 SPX_NAMESPACE(wots_gen_leafx2)
void wots_gen_leafx2(unsigned char *dest,
                   const spx_ctx *ctx,
                   uint32_t leaf_idx, void *v_info);

#endif /* WOTSX2_H_ */