/* Copyright (c) 2023, Google LLC * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef OPENSSL_HEADER_CRYPTO_SPX_THASH_H #define OPENSSL_HEADER_CRYPTO_SPX_THASH_H #include <openssl/base.h> #include "./params.h" #if defined(__cplusplus) extern "C" { #endif // Implements F: a hash function takes an n-byte message as input and produces // an n-byte output. void spx_thash_f(uint8_t *output, const uint8_t input[SPX_N], const uint8_t pk_seed[SPX_N], uint8_t addr[32]); // Implements H: a hash function takes a 2*n-byte message as input and produces // an n-byte output. void spx_thash_h(uint8_t *output, const uint8_t input[2 * SPX_N], const uint8_t pk_seed[SPX_N], uint8_t addr[32]); // Implements Hmsg: a hash function used to generate the digest of the message // to be signed. void spx_thash_hmsg(uint8_t *output, const uint8_t r[SPX_N], const uint8_t pk_seed[SPX_N], const uint8_t pk_root[SPX_N], const uint8_t *msg, size_t msg_len); // Implements PRF: a pseudo-random function that is used to generate the secret // values in WOTS+ and FORS private keys. void spx_thash_prf(uint8_t *output, const uint8_t pk_seed[SPX_N], const uint8_t sk_seed[SPX_N], uint8_t addr[32]); // Implements PRF: a pseudo-random function that is used to generate the // randomizer r for the randomized hashing of the message to be signed. values // in WOTS+ and FORS private keys. void spx_thash_prfmsg(uint8_t *output, const uint8_t sk_prf[SPX_N], const uint8_t opt_rand[SPX_N], const uint8_t *msg, size_t msg_len); // Implements Tl: a hash function that maps an l*n-byte message to an n-byte // message. void spx_thash_tl(uint8_t *output, const uint8_t input[SPX_WOTS_BYTES], const uint8_t pk_seed[SPX_N], uint8_t addr[32]); // Implements Tk: a hash function that maps a k*n-byte message to an n-byte // message. void spx_thash_tk(uint8_t *output, const uint8_t input[SPX_FORS_TREES * SPX_N], const uint8_t pk_seed[SPX_N], uint8_t addr[32]); #if defined(__cplusplus) } // extern C #endif #endif // OPENSSL_HEADER_CRYPTO_SPX_THASH_H