#include <stdint.h> #include <string.h> #include "address.h" #include "hash_state.h" #include "params.h" #include "thash.h" #include "fips202.h" /** * Takes an array of inblocks concatenated arrays of PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N bytes. */ static void PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash( unsigned char *out, unsigned char *buf, const unsigned char *in, unsigned int inblocks, const unsigned char *pub_seed, uint32_t addr[8]) { memcpy(buf, pub_seed, PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N); PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_addr_to_bytes(buf + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N, addr); memcpy(buf + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_ADDR_BYTES, in, inblocks * PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N); shake256(out, PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N, buf, PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_ADDR_BYTES + inblocks * PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N); } /* The wrappers below ensure that we use fixed-size buffers on the stack */ void PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash_1( unsigned char *out, const unsigned char *in, const unsigned char *pub_seed, uint32_t addr[8], const hash_state *hash_state_seeded) { unsigned char buf[PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_ADDR_BYTES + 1 * PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N]; PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash( out, buf, in, 1, pub_seed, addr); (void)hash_state_seeded; /* Avoid unused parameter warning. */ } void PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash_2( unsigned char *out, const unsigned char *in, const unsigned char *pub_seed, uint32_t addr[8], const hash_state *hash_state_seeded) { unsigned char buf[PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_ADDR_BYTES + 2 * PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N]; PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash( out, buf, in, 2, pub_seed, addr); (void)hash_state_seeded; /* Avoid unused parameter warning. */ } void PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash_WOTS_LEN( unsigned char *out, const unsigned char *in, const unsigned char *pub_seed, uint32_t addr[8], const hash_state *hash_state_seeded) { unsigned char buf[PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_ADDR_BYTES + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_WOTS_LEN * PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N]; PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash( out, buf, in, PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_WOTS_LEN, pub_seed, addr); (void)hash_state_seeded; /* Avoid unused parameter warning. */ } void PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash_FORS_TREES( unsigned char *out, const unsigned char *in, const unsigned char *pub_seed, uint32_t addr[8], const hash_state *hash_state_seeded) { unsigned char buf[PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_ADDR_BYTES + PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_FORS_TREES * PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_N]; PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_thash( out, buf, in, PQCLEAN_SPHINCSSHAKE256192FSIMPLE_CLEAN_FORS_TREES, pub_seed, addr); (void)hash_state_seeded; /* Avoid unused parameter warning. */ }