mirrors/pico-hsm
1
0
Fork 0
mirror of https://github.com/polhenarejos/pico-hsm.git synced 2026-01-17 01:18:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Moving hash to other file.

Browse source 
Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos 2022-03-28 16:02:28 +02:00
parent 69a406832d
commit d061958f90
No known key found for this signature in database
GPG key ID: C0095B7870A4CCD3
3 changed files with 100 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
CMakeLists.txt
View file

@ -51,6 +51,7 @@ target_sources(pico_hsm PUBLIC
${CMAKE_CURRENT_LIST_DIR}/src/fs/low_flash.c
${CMAKE_CURRENT_LIST_DIR}/src/rng/random.c
${CMAKE_CURRENT_LIST_DIR}/src/rng/neug.c
${CMAKE_CURRENT_LIST_DIR}/src/hsm/hash_utils.c
${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/sha256.c
${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/aes.c

73
src/hsm/hash_utils.c Normal file
View file

@ -0,0 +1,73 @@
/*
* This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
* Copyright (c) 2022 Pol Henarejos.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <pico/unique_id.h>
#include "mbedtls/md.h"
#include "mbedtls/sha256.h"
#include "hash_utils.h"
void double_hash_pin(const uint8_t *pin, size_t len, uint8_t output[32]) {
uint8_t o1[32];
hash_multi(pin, len, o1);
for (int i = 0; i < sizeof(o1); i++)
o1[i] ^= pin[i%len];
hash_multi(o1, sizeof(o1), output);
}
void hash_multi(const uint8_t *input, size_t len, uint8_t output[32]) {
mbedtls_sha256_context ctx;
mbedtls_sha256_init(&ctx);
int iters = 256;
pico_unique_board_id_t unique_id;
pico_get_unique_board_id(&unique_id);
mbedtls_sha256_starts (&ctx, 0);
mbedtls_sha256_update (&ctx, unique_id.id, sizeof(unique_id.id));
while (iters > len)
{
mbedtls_sha256_update (&ctx, input, len);
iters -= len;
}
if (iters > 0) // remaining iterations
mbedtls_sha256_update (&ctx, input, iters);
mbedtls_sha256_finish (&ctx, output);
mbedtls_sha256_free (&ctx);
}
void hash256(const uint8_t *input, size_t len, uint8_t output[32]) {
mbedtls_sha256_context ctx;
mbedtls_sha256_init(&ctx);
mbedtls_sha256_starts (&ctx, 0);
mbedtls_sha256_update (&ctx, input, len);
mbedtls_sha256_finish (&ctx, output);
mbedtls_sha256_free (&ctx);
}
void generic_hash(mbedtls_md_type_t md, const uint8_t *input, size_t len, uint8_t *output) {
mbedtls_md_context_t ctx;
mbedtls_md_init(&ctx);
const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type(md);
mbedtls_md_setup(&ctx, md_info, 0);
mbedtls_md_starts(&ctx);
mbedtls_md_update(&ctx, input, len);
mbedtls_md_finish(&ctx, output);
mbedtls_md_free(&ctx);
}

26
src/hsm/hash_utils.h Normal file
View file

@ -0,0 +1,26 @@
/*
* This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
* Copyright (c) 2022 Pol Henarejos.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _HASH_UTILS_H_
#define _HASH_UTILS_H_
extern void double_hash_pin(const uint8_t *pin, size_t len, uint8_t output[32]);
extern void hash_multi(const uint8_t *input, size_t len, uint8_t output[32]);
extern void hash256(const uint8_t *input, size_t len, uint8_t output[32]);
extern void generic_hash(mbedtls_md_type_t md, const uint8_t *input, size_t len, uint8_t *output);
#endif