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fix(mbedtls): validate ECDSA signature range and harden ECC memory power-down

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Co-Authored-By: Ashish Sharma <ashish.sharma@espressif.com>
This commit is contained in:
harshal.patil
2026-06-22 11:17:50 +05:30
co-authored by Ashish Sharma
parent aa222369e7
commit abcbe87e2d
7 changed files with 51 additions and 9 deletions
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components/hal/esp32p4/include/hal/ecc_ll.h
+17 -3
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -11,6 +11,8 @@
#include "hal/ecc_types.h"
#include "soc/ecc_mult_reg.h"
#include "soc/hp_sys_clkrst_struct.h"
#include "soc/hp_system_reg.h"
#include "esp_fault.h"
#ifdef __cplusplus
extern "C" {
@@ -56,8 +58,20 @@ static inline void ecc_ll_reset_register(void)
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
#define ecc_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; ecc_ll_reset_register(__VA_ARGS__)
static inline void ecc_ll_power_up(void) {}
static inline void ecc_ll_power_down(void) {}
static inline void ecc_ll_power_up(void)
{
/* Power up the ECC peripheral (default state is power-up) */
REG_CLR_BIT(HP_SYSTEM_ECC_PD_CTRL_REG, HP_SYSTEM_ECC_MEM_PD);
REG_CLR_BIT(HP_SYSTEM_ECC_PD_CTRL_REG, HP_SYSTEM_ECC_MEM_FORCE_PD);
ESP_FAULT_ASSERT(REG_GET_BIT(HP_SYSTEM_ECC_PD_CTRL_REG, HP_SYSTEM_ECC_MEM_FORCE_PD) == 0);
}
static inline void ecc_ll_power_down(void)
{
/* Power down the ECC peripheral */
REG_CLR_BIT(HP_SYSTEM_ECC_PD_CTRL_REG, HP_SYSTEM_ECC_MEM_FORCE_PU);
REG_SET_BIT(HP_SYSTEM_ECC_PD_CTRL_REG, HP_SYSTEM_ECC_MEM_PD);
}
static inline void ecc_ll_enable_interrupt(void)
{