#ifndef PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_FORS_H #define PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_FORS_H #include <stdint.h> #include "hash_state.h" #include "params.h" /** * Signs a message m, deriving the secret key from sk_seed and the FTS address. * Assumes m contains at least PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_FORS_HEIGHT * PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_FORS_TREES bits. */ void PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_fors_sign( unsigned char *sig, unsigned char *pk, const unsigned char *m, const unsigned char *sk_seed, const unsigned char *pub_seed, const uint32_t fors_addr[8], const hash_state *hash_state_seeded); /** * Derives the FORS public key from a signature. * This can be used for verification by comparing to a known public key, or to * subsequently verify a signature on the derived public key. The latter is the * typical use-case when used as an FTS below an OTS in a hypertree. * Assumes m contains at least PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_FORS_HEIGHT * PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_FORS_TREES bits. */ void PQCLEAN_SPHINCSSHA256192FSIMPLE_CLEAN_fors_pk_from_sig( unsigned char *pk, const unsigned char *sig, const unsigned char *m, const unsigned char *pub_seed, const uint32_t fors_addr[8], const hash_state *hash_state_seeded); #endif