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fix(bootloader_support): added ecdsa curve validation during secure boot

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This commit added ECDSA key curve validation between
curve selected in menuconfig and key provided.
This commit is contained in:
nilesh.kale
2026-02-24 15:43:06 +05:30
parent cdee20c77b
commit 7ff9f65a24
5 changed files with 39 additions and 7 deletions
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13
components/bootloader_support/include/esp_secure_boot.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -70,6 +70,17 @@ typedef enum {
#define ESP_SECURE_BOOT_SCHEME ESP_SECURE_BOOT_V2_ECDSA
#endif
/* Expected ECDSA curve ID from menuconfig "ECDSA key size" (matches ECDSA_CURVE_P192/P256/P384 in ROM) */
#if CONFIG_SECURE_SIGNED_APPS_ECDSA_V2_SCHEME
#if CONFIG_SECURE_BOOT_ECDSA_KEY_LEN_192_BITS
#define ESP_SECURE_BOOT_ECDSA_CURVE_ID ECDSA_CURVE_P192
#elif CONFIG_SECURE_BOOT_ECDSA_KEY_LEN_256_BITS
#define ESP_SECURE_BOOT_ECDSA_CURVE_ID ECDSA_CURVE_P256
#elif CONFIG_SECURE_BOOT_ECDSA_KEY_LEN_384_BITS
#define ESP_SECURE_BOOT_ECDSA_CURVE_ID ECDSA_CURVE_P384
#endif
#endif
#if CONFIG_SECURE_BOOT || CONFIG_SECURE_SIGNED_APPS_NO_SECURE_BOOT
/** @brief Get the selected secure boot scheme key type
*