mirror of https://github.com/wolfSSL/wolfBoot.git
124 lines
3.7 KiB
C
124 lines
3.7 KiB
C
/* wolfcrypt_support.c
|
|
*
|
|
* Support infrastructure for wolfCrypt test and benchmark
|
|
*
|
|
* Copyright (C) 2025 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfBoot.
|
|
*
|
|
* wolfBoot 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.
|
|
*
|
|
* wolfBoot 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, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <wolfssl/wolfcrypt/settings.h>
|
|
#include <wolfssl/wolfcrypt/types.h>
|
|
|
|
#if defined(WOLFCRYPT_TEST) || defined(WOLFCRYPT_BENCHMARK)
|
|
|
|
/* ========== TIME FUNCTIONS ========== */
|
|
|
|
/*
|
|
* Time implementation strategy:
|
|
* 1. If WOLFCRYPT_SECURE_MODE - use secure world API
|
|
* 2. If target has SysTick/timer - use hardware timer
|
|
* 3. Fallback - simple counter (not accurate for benchmarks)
|
|
*/
|
|
|
|
#if defined(WOLFCRYPT_SECURE_MODE)
|
|
/* Use secure mode API for time */
|
|
#include "wolfboot/wc_secure.h"
|
|
#elif defined(TARGET_va416x0)
|
|
/* Use Vorago SDK HAL_time_ms (incremented by SysTick_Handler every 1ms) */
|
|
extern volatile uint64_t HAL_time_ms;
|
|
#else
|
|
/* Simple tick counter fallback */
|
|
static volatile unsigned int tick_counter = 0;
|
|
#endif
|
|
|
|
/* my_time() - Used by wolfCrypt ASN.c for certificate time checking
|
|
* Returns: Current time in seconds since epoch (or counter value)
|
|
*/
|
|
unsigned long my_time(unsigned long* timer)
|
|
{
|
|
#if defined(WOLFCRYPT_SECURE_MODE)
|
|
/* Get time from secure world */
|
|
unsigned long t = wolfBoot_nsc_get_time();
|
|
if (timer) *timer = t;
|
|
return t;
|
|
#elif defined(TARGET_va416x0)
|
|
unsigned long t = (unsigned long)(HAL_time_ms / 1000);
|
|
if (timer) *timer = t;
|
|
return t;
|
|
#else
|
|
/* Simple incrementing counter */
|
|
tick_counter++;
|
|
if (timer) *timer = tick_counter;
|
|
return tick_counter;
|
|
#endif
|
|
}
|
|
|
|
#ifdef WOLFCRYPT_BENCHMARK
|
|
/* current_time() - Used by wolfCrypt benchmark tool for timing measurements
|
|
* Parameter: reset - if non-zero, reset the timer
|
|
* Returns: Current time in seconds (floating point)
|
|
*/
|
|
double current_time(int reset)
|
|
{
|
|
(void)reset;
|
|
|
|
#if defined(WOLFCRYPT_SECURE_MODE)
|
|
return wolfBoot_nsc_current_time(reset);
|
|
#elif defined(TARGET_va416x0)
|
|
/* Use Vorago SDK SysTick-based millisecond counter */
|
|
return (double)HAL_time_ms / 1000.0;
|
|
#else
|
|
/* Simple counter-based timing */
|
|
double timeNow = (double)tick_counter;
|
|
return timeNow;
|
|
#endif
|
|
}
|
|
#endif /* WOLFCRYPT_BENCHMARK */
|
|
|
|
/* ========== RNG SEED FUNCTIONS ========== */
|
|
|
|
/*
|
|
* RNG seed generation strategy:
|
|
* 1. If WOLFCRYPT_SECURE_MODE - use secure TRNG
|
|
* 2. If target has TRNG - use hardware random
|
|
* 3. Fallback - pseudo-random based on time (NOT cryptographically secure)
|
|
*/
|
|
|
|
/* Simple incrementing RNG for testing (not cryptographically secure).
|
|
* Fixed non-zero seed for deterministic test/benchmark results. */
|
|
static uint32_t test_rng_counter = 0x12345678;
|
|
|
|
/* my_rng_seed_gen() - Generate random seed/data for test/benchmark
|
|
* This is NOT cryptographically secure - only for testing!
|
|
* Returns: 0 on success
|
|
*/
|
|
int my_rng_seed_gen(unsigned char* output, unsigned int sz)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < sz; i++) {
|
|
if ((i % 4) == 0) {
|
|
test_rng_counter++;
|
|
}
|
|
output[i] = (unsigned char)(test_rng_counter >> ((i % 4) * 8));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* WOLFCRYPT_TEST || WOLFCRYPT_BENCHMARK */
|