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pqcrypto/crypto_sign/sphincs-sha256-128f-simple/clean/wots.h
Thom Wiggers 74efb10807
Incorporate feedback
* Names passed around (mostly constant) value more clearly
* Put ``const`` where applicable (almost everywhere)
* Renamed ``primitive.h``
* Fixed some nits
2019-07-17 08:37:38 +02:00

42 lines
1.3 KiB
C

#ifndef SPX_WOTS_H
#define SPX_WOTS_H
#include "params.h"
#include "hash_state.h"
#include <stdint.h>
/**
* WOTS key generation. Takes a 32 byte seed for the private key, expands it to
* a full WOTS private key and computes the corresponding public key.
* It requires the seed pub_seed (used to generate bitmasks and hash keys)
* and the address of this WOTS key pair.
*
* Writes the computed public key to 'pk'.
*/
void PQCLEAN_SPHINCSSHA256128FSIMPLE_CLEAN_wots_gen_pk(
unsigned char *pk, const unsigned char *sk_seed,
const unsigned char *pub_seed, uint32_t addr[8],
const hash_state *hash_state_seeded);
/**
* Takes a n-byte message and the 32-byte seed for the private key to compute a
* signature that is placed at 'sig'.
*/
void PQCLEAN_SPHINCSSHA256128FSIMPLE_CLEAN_wots_sign(
unsigned char *sig, const unsigned char *msg,
const unsigned char *sk_seed, const unsigned char *pub_seed,
uint32_t addr[8], const hash_state *hash_state_seeded);
/**
* Takes a WOTS signature and an n-byte message, computes a WOTS public key.
*
* Writes the computed public key to 'pk'.
*/
void PQCLEAN_SPHINCSSHA256128FSIMPLE_CLEAN_wots_pk_from_sig(
unsigned char *pk,
const unsigned char *sig, const unsigned char *msg,
const unsigned char *pub_seed, uint32_t addr[8],
const hash_state *hash_state_seeded);
#endif