libbitcoinpqc 0.1.0

Post-Quantum Cryptographic signature algorithms for Bitcoin (BIP-360)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

#include <stdlib.h>
#include <string.h>
#include "libbitcoinpqc/slh_dsa.h"

/*
 * This file implements the key generation function for SLH-DSA-Shake-128s (SPHINCS+)
 */

/* Include necessary headers from SPHINCS+ reference implementation */
#include "../../sphincsplus/ref/api.h"
#include "../../sphincsplus/ref/randombytes.h"
#include "../../sphincsplus/ref/params.h"

/*
 * External declaration for the random data utilities
 * These are implemented in src/slh_dsa/utils.c
 */
extern void slh_dsa_init_random_source(const uint8_t *random_data, size_t random_data_size);
extern void slh_dsa_setup_custom_random(void);
extern void slh_dsa_restore_original_random(void);

int slh_dsa_shake_128s_keygen(
    uint8_t *pk,
    uint8_t *sk,
    const uint8_t *random_data,
    size_t random_data_size
) {
    if (!pk || !sk || !random_data || random_data_size < 128) {
        return -1;
    }

    /*
     * For fully deterministic key generation, use the first 3*SPX_N bytes
     * of the random data directly as the seed instead of going through
     * the random data wrapper.
     */
    return crypto_sign_seed_keypair(pk, sk, random_data);
}