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Adding license headers.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-03-25 12:08:48 +01:00
parent 9c707df93b
commit a01bd39f21
18 changed files with 443 additions and 363 deletions
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82
src/rng/random.c
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@@ -1,27 +1,21 @@
/*
* random.c -- get random bytes
/*
* 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.
*
* Copyright (C) 2010, 2011, 2012, 2013, 2015
* Free Software Initiative of Japan
* Author: NIIBE Yutaka <gniibe@fsij.org>
*
* This file is a part of Gnuk, a GnuPG USB Token implementation.
*
* Gnuk 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, either version 3 of the License, or
* (at your option) any later version.
*
* Gnuk 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/>.
* 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 <stdint.h>
#include <string.h>
@@ -30,18 +24,16 @@
#define RANDOM_BYTES_LENGTH 32
static uint32_t random_word[RANDOM_BYTES_LENGTH/sizeof (uint32_t)];
void random_init (void)
{
void random_init(void) {
int i;
neug_init (random_word, RANDOM_BYTES_LENGTH/sizeof (uint32_t));
neug_init(random_word, RANDOM_BYTES_LENGTH/sizeof (uint32_t));
for (i = 0; i < NEUG_PRE_LOOP; i++)
neug_get (NEUG_KICK_FILLING);
neug_get();
}
void random_fini (void)
{
void random_fini(void) {
neug_fini ();
}
@@ -50,13 +42,12 @@ void random_fini (void)
*/
void random_bytes_free (const uint8_t *p);
#define MAX_RANDOM_BUFFER 1024
const uint8_t * random_bytes_get (size_t len)
{
const uint8_t * random_bytes_get(size_t len) {
if (len > MAX_RANDOM_BUFFER)
return NULL;
static uint32_t return_word[MAX_RANDOM_BUFFER/sizeof(uint32_t)];
for (int ix = 0; ix < len; ix += RANDOM_BYTES_LENGTH) {
neug_wait_full ();
neug_wait_full();
memcpy(return_word+ix/sizeof(uint32_t), random_word, RANDOM_BYTES_LENGTH);
random_bytes_free((const uint8_t *)random_word);
}
@@ -66,53 +57,48 @@ const uint8_t * random_bytes_get (size_t len)
/*
* Free pointer to random 32-byte
*/
void random_bytes_free (const uint8_t *p)
{
void random_bytes_free(const uint8_t *p) {
(void)p;
memset (random_word, 0, RANDOM_BYTES_LENGTH);
neug_flush ();
memset(random_word, 0, RANDOM_BYTES_LENGTH);
neug_flush();
}
/*
* Return 4-byte salt
*/
void random_get_salt (uint8_t *p)
{
void random_get_salt(uint8_t *p) {
uint32_t rnd;
rnd = neug_get (NEUG_KICK_FILLING);
memcpy (p, &rnd, sizeof (uint32_t));
rnd = neug_get (NEUG_KICK_FILLING);
memcpy (p + sizeof (uint32_t), &rnd, sizeof (uint32_t));
rnd = neug_get();
memcpy(p, &rnd, sizeof (uint32_t));
rnd = neug_get();
memcpy(p + sizeof (uint32_t), &rnd, sizeof (uint32_t));
}
/*
* Random byte iterator
*/
int random_gen (void *arg, unsigned char *out, size_t out_len)
{
int random_gen(void *arg, unsigned char *out, size_t out_len) {
uint8_t *index_p = (uint8_t *)arg;
uint8_t index = index_p ? *index_p : 0;
size_t n;
while (out_len)
{
neug_wait_full ();
while (out_len) {
neug_wait_full();
n = RANDOM_BYTES_LENGTH - index;
if (n > out_len)
n = out_len;
memcpy (out, ((unsigned char *)random_word) + index, n);
memcpy(out, ((unsigned char *)random_word) + index, n);
out += n;
out_len -= n;
index += n;
if (index >= RANDOM_BYTES_LENGTH)
{
if (index >= RANDOM_BYTES_LENGTH) {
index = 0;
neug_flush ();
neug_flush();
}
}