aa4611a4d1
This PR sacrifices passing some extra arguments to get rid of the global state. * Haraka needs state in all hash calls, this results in changes to the hash functions specified in `hash.h`. The extra pointers passed would not be necessary for SHA256 or SHAKE256. * SHAKE256 did not have global state, but uniformity in the implementations requires us to pass around the new state context anyway. Otherwise, @joostrijneveld's SPHINCS+ generator doesn't really work anymore). We introduce a new header file called `primitive.h` which defines the required state type for the generic functions. I did not go into replacing _all_ occurrences of state variables by the new `hash_state` macro.
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#ifndef SPX_WOTS_H
|
|
#define SPX_WOTS_H
|
|
|
|
#include "params.h"
|
|
#include "primitive.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_SPHINCSSHA256256FROBUST_CLEAN_wots_gen_pk(
|
|
unsigned char *pk, const unsigned char *sk_seed,
|
|
const unsigned char *pub_seed, uint32_t addr[8],
|
|
hash_state *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_SPHINCSSHA256256FROBUST_CLEAN_wots_sign(
|
|
unsigned char *sig, const unsigned char *msg,
|
|
const unsigned char *sk_seed, const unsigned char *pub_seed,
|
|
uint32_t addr[8], hash_state *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_SPHINCSSHA256256FROBUST_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],
|
|
hash_state *state_seeded);
|
|
|
|
#endif
|