61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
#ifndef SPX_UTILS_H
|
|
#define SPX_UTILS_H
|
|
|
|
#include "params.h"
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
/**
|
|
* Converts the value of 'in' to 'outlen' bytes in big-endian byte order.
|
|
*/
|
|
void PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_ull_to_bytes(
|
|
unsigned char *out, size_t outlen, unsigned long long in);
|
|
|
|
/**
|
|
* Converts the inlen bytes in 'in' from big-endian byte order to an integer.
|
|
*/
|
|
unsigned long long PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_bytes_to_ull(
|
|
const unsigned char *in, size_t inlen);
|
|
|
|
/**
|
|
* Computes a root node given a leaf and an auth path.
|
|
* Expects address to be complete other than the tree_height and tree_index.
|
|
*/
|
|
void PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_compute_root(
|
|
unsigned char *root, const unsigned char *leaf,
|
|
uint32_t leaf_idx, uint32_t idx_offset,
|
|
const unsigned char *auth_path, uint32_t tree_height,
|
|
const unsigned char *pub_seed, uint32_t addr[8]);
|
|
|
|
/**
|
|
* For a given leaf index, computes the authentication path and the resulting
|
|
* root node using Merkle's TreeHash algorithm.
|
|
* Expects the layer and tree parts of the tree_addr to be set, as well as the
|
|
* tree type (i.e. SPX_ADDR_TYPE_HASHTREE or SPX_ADDR_TYPE_FORSTREE).
|
|
* Applies the offset idx_offset to indices before building addresses, so that
|
|
* it is possible to continue counting indices across trees.
|
|
*/
|
|
void PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_treehash_FORS_HEIGHT(
|
|
unsigned char *root, unsigned char *auth_path,
|
|
const unsigned char *sk_seed, const unsigned char *pub_seed,
|
|
uint32_t leaf_idx, uint32_t idx_offset,
|
|
void (*gen_leaf)(
|
|
unsigned char * /* leaf */,
|
|
const unsigned char * /* sk_seed */,
|
|
const unsigned char * /* pub_seed */,
|
|
uint32_t /* addr_idx */, const uint32_t[8] /* tree_addr */),
|
|
uint32_t tree_addr[8]);
|
|
|
|
void PQCLEAN_SPHINCSSHA256256FROBUST_CLEAN_treehash_TREE_HEIGHT(
|
|
unsigned char *root, unsigned char *auth_path,
|
|
const unsigned char *sk_seed, const unsigned char *pub_seed,
|
|
uint32_t leaf_idx, uint32_t idx_offset,
|
|
void (*gen_leaf)(
|
|
unsigned char * /* leaf */,
|
|
const unsigned char * /* sk_seed */,
|
|
const unsigned char * /* pub_seed */,
|
|
uint32_t /* addr_idx */, const uint32_t[8] /* tree_addr */),
|
|
uint32_t tree_addr[8]);
|
|
|
|
#endif
|