mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
541 lines
17 KiB
C
541 lines
17 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "memory_checks.h"
|
|
#include "unity_fixture.h"
|
|
|
|
#include "soc/soc_caps.h"
|
|
typedef enum {
|
|
HMAC_KEY0 = 0,
|
|
HMAC_KEY1,
|
|
HMAC_KEY2,
|
|
HMAC_KEY3,
|
|
HMAC_KEY4,
|
|
HMAC_KEY5,
|
|
HMAC_KEY_MAX
|
|
} hmac_key_id_t;
|
|
|
|
#if CONFIG_IDF_TARGET_ESP32S2
|
|
#include "esp32s2/rom/efuse.h"
|
|
#include "esp32s2/rom/digital_signature.h"
|
|
#include "esp32s2/rom/aes.h"
|
|
#include "esp32s2/rom/sha.h"
|
|
#include "esp32s2/rom/hmac.h"
|
|
#include "soc/soc_memory_layout.h"
|
|
#elif CONFIG_IDF_TARGET_ESP32C3
|
|
#include "esp32c3/rom/efuse.h"
|
|
#include "esp32c3/rom/digital_signature.h"
|
|
#include "esp32c3/rom/hmac.h"
|
|
#elif CONFIG_IDF_TARGET_ESP32S3
|
|
#include "esp32s3/rom/efuse.h"
|
|
#include "esp32s3/rom/digital_signature.h"
|
|
#include "esp32s3/rom/aes.h"
|
|
#include "esp32s3/rom/sha.h"
|
|
#elif CONFIG_IDF_TARGET_ESP32C6
|
|
#include "esp32c6/rom/efuse.h"
|
|
#include "esp32c6/rom/digital_signature.h"
|
|
#include "esp32c6/rom/aes.h"
|
|
#include "esp32c6/rom/sha.h"
|
|
#elif CONFIG_IDF_TARGET_ESP32H2
|
|
#include "esp32h2/rom/efuse.h"
|
|
#include "esp32h2/rom/digital_signature.h"
|
|
#include "esp32h2/rom/aes.h"
|
|
#include "esp32h2/rom/sha.h"
|
|
#elif CONFIG_IDF_TARGET_ESP32P4
|
|
#include "esp32p4/rom/efuse.h"
|
|
#include "esp32p4/rom/digital_signature.h"
|
|
#include "esp32p4/rom/aes.h"
|
|
#include "esp32p4/rom/sha.h"
|
|
#endif
|
|
|
|
#define ESP_ERR_HW_CRYPTO_DS_HMAC_FAIL (0x1) /*!< HMAC peripheral problem */
|
|
#define ESP_ERR_HW_CRYPTO_DS_INVALID_KEY (0x2) /*!< given HMAC key isn't correct, HMAC peripheral problem */
|
|
#define ESP_ERR_HW_CRYPTO_DS_INVALID_DIGEST (0x4) /*!< message digest check failed, result is invalid */
|
|
#define ESP_ERR_HW_CRYPTO_DS_INVALID_PADDING (0x5) /*!< padding check failed, but result is produced anyway and can be read*/
|
|
|
|
#define ESP_DS_IV_BIT_LEN 128
|
|
#define ESP_DS_IV_LEN (ESP_DS_IV_BIT_LEN / 8)
|
|
#define ESP_DS_SIGNATURE_MAX_BIT_LEN SOC_RSA_MAX_BIT_LEN
|
|
#define ESP_DS_SIGNATURE_MD_BIT_LEN 256
|
|
#define ESP_DS_SIGNATURE_M_PRIME_BIT_LEN 32
|
|
#define ESP_DS_SIGNATURE_L_BIT_LEN 32
|
|
#define ESP_DS_SIGNATURE_PADDING_BIT_LEN 64
|
|
|
|
#define ESP_DS_C_LEN (((ESP_DS_SIGNATURE_MAX_BIT_LEN * 3 \
|
|
+ ESP_DS_SIGNATURE_MD_BIT_LEN \
|
|
+ ESP_DS_SIGNATURE_M_PRIME_BIT_LEN \
|
|
+ ESP_DS_SIGNATURE_L_BIT_LEN \
|
|
+ ESP_DS_SIGNATURE_PADDING_BIT_LEN) / 8))
|
|
|
|
typedef enum {
|
|
ESP_DS_RSA_1024 = (1024 / 32) - 1,
|
|
ESP_DS_RSA_2048 = (2048 / 32) - 1,
|
|
ESP_DS_RSA_3072 = (3072 / 32) - 1,
|
|
ESP_DS_RSA_4096 = (4096 / 32) - 1
|
|
} esp_digital_signature_length_t;
|
|
|
|
typedef struct esp_digital_signature_data {
|
|
esp_digital_signature_length_t rsa_length;
|
|
uint32_t iv[ESP_DS_IV_BIT_LEN / 32];
|
|
uint8_t c[ESP_DS_C_LEN];
|
|
} esp_ds_data_t;
|
|
|
|
typedef struct {
|
|
uint32_t Y[ESP_DS_SIGNATURE_MAX_BIT_LEN / 32];
|
|
uint32_t M[ESP_DS_SIGNATURE_MAX_BIT_LEN / 32];
|
|
uint32_t Rb[ESP_DS_SIGNATURE_MAX_BIT_LEN / 32];
|
|
uint32_t M_prime;
|
|
uint32_t length;
|
|
} esp_ds_p_data_t;
|
|
|
|
#define NUM_RESULTS 10
|
|
|
|
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
|
#define DS_MAX_BITS (4096)
|
|
#else
|
|
#define DS_MAX_BITS (ETS_DS_MAX_BITS)
|
|
#endif
|
|
|
|
typedef struct {
|
|
uint8_t iv[ETS_DS_IV_LEN];
|
|
ets_ds_p_data_t p_data;
|
|
uint8_t expected_c[ETS_DS_C_LEN];
|
|
uint8_t hmac_key_idx;
|
|
uint32_t expected_results[NUM_RESULTS][DS_MAX_BITS / 32];
|
|
} encrypt_testcase_t;
|
|
|
|
|
|
#if DS_MAX_BITS == 4096
|
|
#define RSA_LEN (ESP_DS_RSA_4096)
|
|
#include "digital_signature_test_cases_4096.h"
|
|
#elif DS_MAX_BITS == 3072
|
|
#define RSA_LEN (ESP_DS_RSA_3072)
|
|
#include "digital_signature_test_cases_3072.h"
|
|
#endif
|
|
|
|
_Static_assert(NUM_RESULTS == NUM_MESSAGES, "expected_results size should be the same as NUM_MESSAGES in generated header");
|
|
|
|
#if !CONFIG_IDF_TARGET_ESP32S2
|
|
|
|
#include "esp_private/periph_ctrl.h"
|
|
#include "hal/ds_hal.h"
|
|
#include "hal/ds_ll.h"
|
|
#include "hal/hmac_hal.h"
|
|
|
|
|
|
static void ds_acquire_enable(void)
|
|
{
|
|
periph_module_enable(PERIPH_HMAC_MODULE);
|
|
periph_module_enable(PERIPH_SHA_MODULE);
|
|
periph_module_enable(PERIPH_DS_MODULE);
|
|
hmac_hal_start();
|
|
}
|
|
|
|
static void ds_disable_release(void)
|
|
{
|
|
ds_hal_finish();
|
|
periph_module_disable(PERIPH_DS_MODULE);
|
|
periph_module_disable(PERIPH_SHA_MODULE);
|
|
periph_module_disable(PERIPH_HMAC_MODULE);
|
|
}
|
|
|
|
|
|
static esp_err_t esp_ds_start_sign(const void *message, const esp_ds_data_t *data, hmac_key_id_t key_id)
|
|
{
|
|
ds_acquire_enable();
|
|
|
|
uint32_t conf_error = hmac_hal_configure(HMAC_OUTPUT_DS, key_id);
|
|
if (conf_error) {
|
|
ds_disable_release();
|
|
return ESP_ERR_HW_CRYPTO_DS_HMAC_FAIL;
|
|
}
|
|
|
|
ds_hal_start();
|
|
|
|
while (ds_hal_busy() != 0) { }
|
|
|
|
size_t rsa_len = (data->rsa_length + 1) * 4;
|
|
ds_hal_write_private_key_params(data->c);
|
|
ds_hal_configure_iv((uint32_t *)data->iv);
|
|
ds_hal_write_message(message, rsa_len);
|
|
|
|
ds_hal_start_sign();
|
|
|
|
return ESP_OK;
|
|
}
|
|
|
|
static esp_err_t esp_ds_finish_sign(void *signature, const esp_ds_data_t *data)
|
|
{
|
|
unsigned rsa_len = (data->rsa_length + 1) * 4;
|
|
|
|
while (ds_hal_busy()) { }
|
|
|
|
ds_signature_check_t sig_check_result = ds_hal_read_result((uint8_t *) signature, (size_t) rsa_len);
|
|
|
|
esp_err_t return_value = ESP_OK;
|
|
|
|
if (sig_check_result == DS_SIGNATURE_MD_FAIL || sig_check_result == DS_SIGNATURE_PADDING_AND_MD_FAIL) {
|
|
return_value = ESP_ERR_HW_CRYPTO_DS_INVALID_DIGEST;
|
|
}
|
|
|
|
if (sig_check_result == DS_SIGNATURE_PADDING_FAIL) {
|
|
return_value = ESP_ERR_HW_CRYPTO_DS_INVALID_PADDING;
|
|
}
|
|
|
|
hmac_hal_clean();
|
|
|
|
ds_disable_release();
|
|
|
|
return return_value;
|
|
}
|
|
|
|
static esp_err_t esp_ds_sign(const void *message,
|
|
const esp_ds_data_t *data,
|
|
hmac_key_id_t key_id,
|
|
void *signature)
|
|
{
|
|
esp_err_t result = esp_ds_start_sign(message, data, key_id);
|
|
if (result != ESP_OK) {
|
|
return result;
|
|
}
|
|
|
|
while (ds_hal_busy()) { }
|
|
|
|
return esp_ds_finish_sign(signature, data);
|
|
}
|
|
|
|
static esp_err_t esp_ds_encrypt_params(esp_ds_data_t *data,
|
|
const void *iv,
|
|
const esp_ds_p_data_t *p_data,
|
|
const void *key)
|
|
{
|
|
if (!p_data) {
|
|
return ESP_ERR_INVALID_ARG;
|
|
}
|
|
|
|
esp_err_t result = ESP_OK;
|
|
|
|
periph_module_enable(PERIPH_AES_MODULE);
|
|
periph_module_enable(PERIPH_DS_MODULE);
|
|
periph_module_enable(PERIPH_SHA_MODULE);
|
|
periph_module_enable(PERIPH_HMAC_MODULE);
|
|
periph_module_enable(PERIPH_RSA_MODULE);
|
|
|
|
ets_ds_data_t *ds_data = (ets_ds_data_t *) data;
|
|
const ets_ds_p_data_t *ds_plain_data = (const ets_ds_p_data_t *) p_data;
|
|
|
|
ets_ds_result_t ets_result = ets_ds_encrypt_params(ds_data, iv, ds_plain_data, key, ETS_DS_KEY_HMAC);
|
|
|
|
if (ets_result == ETS_DS_INVALID_PARAM) {
|
|
result = ESP_ERR_INVALID_ARG;
|
|
}
|
|
|
|
periph_module_disable(PERIPH_RSA_MODULE);
|
|
periph_module_disable(PERIPH_HMAC_MODULE);
|
|
periph_module_disable(PERIPH_SHA_MODULE);
|
|
periph_module_disable(PERIPH_DS_MODULE);
|
|
periph_module_disable(PERIPH_AES_MODULE);
|
|
|
|
return result;
|
|
}
|
|
#else /* !CONFIG_IDF_TARGET_ESP32S2 */
|
|
|
|
static void ds_acquire_enable(void)
|
|
{
|
|
ets_hmac_enable();
|
|
ets_ds_enable();
|
|
}
|
|
|
|
static void ds_disable_release(void)
|
|
{
|
|
ets_ds_disable();
|
|
ets_hmac_disable();
|
|
}
|
|
|
|
static esp_err_t esp_ds_start_sign(const void *message,
|
|
const esp_ds_data_t *data,
|
|
hmac_key_id_t key_id)
|
|
{
|
|
ds_acquire_enable();
|
|
|
|
int r = ets_hmac_calculate_downstream(ETS_EFUSE_BLOCK_KEY0 + (ets_efuse_block_t) key_id,
|
|
ETS_EFUSE_KEY_PURPOSE_HMAC_DOWN_DIGITAL_SIGNATURE);
|
|
if (r != ETS_OK) {
|
|
ds_disable_release();
|
|
return ESP_ERR_HW_CRYPTO_DS_HMAC_FAIL;
|
|
}
|
|
|
|
ets_ds_data_t *ds_data = (ets_ds_data_t *) data;
|
|
|
|
ets_ds_result_t result = ets_ds_start_sign(message, ds_data);
|
|
|
|
// ETS_DS_INVALID_PARAM only happens if a parameter is NULL or data->rsa_length is wrong
|
|
// We checked all of that already
|
|
assert(result != ETS_DS_INVALID_PARAM);
|
|
|
|
if (result == ETS_DS_INVALID_KEY) {
|
|
ds_disable_release();
|
|
return ESP_ERR_HW_CRYPTO_DS_INVALID_KEY;
|
|
}
|
|
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t esp_ds_finish_sign(void *signature, const esp_ds_data_t *data)
|
|
{
|
|
ets_ds_result_t result = ets_ds_finish_sign(signature, (ets_ds_data_t*) data);
|
|
|
|
esp_err_t return_value = ESP_OK;
|
|
|
|
assert(result != ETS_DS_INVALID_PARAM);
|
|
|
|
if (result == ETS_DS_INVALID_DIGEST) {
|
|
return_value = ESP_ERR_HW_CRYPTO_DS_INVALID_DIGEST;
|
|
}
|
|
if (result == ETS_DS_INVALID_PADDING) {
|
|
return_value = ESP_ERR_HW_CRYPTO_DS_INVALID_PADDING;
|
|
}
|
|
|
|
int res = ets_hmac_invalidate_downstream(ETS_EFUSE_KEY_PURPOSE_HMAC_DOWN_DIGITAL_SIGNATURE);
|
|
assert(res == ETS_OK); // should not fail if called with correct purpose
|
|
(void)res;
|
|
|
|
ds_disable_release();
|
|
|
|
return return_value;
|
|
}
|
|
|
|
static esp_err_t esp_ds_sign(const void *message,
|
|
const esp_ds_data_t *data,
|
|
hmac_key_id_t key_id,
|
|
void *signature)
|
|
{
|
|
esp_err_t result = esp_ds_start_sign(message, data, key_id);
|
|
if (result != ESP_OK) {
|
|
return result;
|
|
}
|
|
|
|
while (ets_ds_is_busy()) { }
|
|
|
|
return esp_ds_finish_sign(signature, (void *)data);
|
|
}
|
|
|
|
static esp_err_t esp_ds_encrypt_params(esp_ds_data_t *data,
|
|
const void *iv,
|
|
const esp_ds_p_data_t *p_data,
|
|
const void *key)
|
|
{
|
|
assert(esp_ptr_internal(p_data) && esp_ptr_word_aligned(p_data));
|
|
|
|
esp_err_t result = ESP_OK;
|
|
|
|
ets_aes_enable();
|
|
ets_sha_enable();
|
|
|
|
ets_ds_data_t *ds_data = (ets_ds_data_t *) data;
|
|
const ets_ds_p_data_t *ds_plain_data = (const ets_ds_p_data_t *) p_data;
|
|
|
|
ets_ds_result_t ets_result = ets_ds_encrypt_params(ds_data, iv, ds_plain_data, key, ETS_DS_KEY_HMAC);
|
|
|
|
if (ets_result == ETS_DS_INVALID_PARAM) {
|
|
result = ESP_ERR_INVALID_ARG;
|
|
}
|
|
|
|
ets_sha_disable();
|
|
ets_aes_disable();
|
|
|
|
return result;
|
|
}
|
|
|
|
#endif /* !CONFIG_IDF_TARGET_ESP32S2 */
|
|
|
|
TEST_GROUP(ds);
|
|
|
|
TEST_SETUP(ds)
|
|
{
|
|
test_utils_record_free_mem();
|
|
TEST_ESP_OK(test_utils_set_leak_level(0, ESP_LEAK_TYPE_CRITICAL, ESP_COMP_LEAK_GENERAL));
|
|
}
|
|
|
|
TEST_TEAR_DOWN(ds)
|
|
{
|
|
test_utils_finish_and_evaluate_leaks(test_utils_get_leak_level(ESP_LEAK_TYPE_WARNING, ESP_COMP_LEAK_ALL),
|
|
test_utils_get_leak_level(ESP_LEAK_TYPE_CRITICAL, ESP_COMP_LEAK_ALL));
|
|
}
|
|
|
|
TEST(ds, digital_signature_parameter_encryption)
|
|
{
|
|
for (int i = 0; i < NUM_CASES; i++) {
|
|
printf("Encrypting test case %d...\n", i);
|
|
const encrypt_testcase_t *t = &test_cases[i];
|
|
esp_ds_data_t result = { };
|
|
esp_ds_p_data_t p_data;
|
|
|
|
memcpy(p_data.Y, t->p_data.Y, DS_MAX_BITS / 8);
|
|
memcpy(p_data.M, t->p_data.M, DS_MAX_BITS / 8);
|
|
memcpy(p_data.Rb, t->p_data.Rb, DS_MAX_BITS / 8);
|
|
p_data.M_prime = t->p_data.M_prime;
|
|
p_data.length = t->p_data.length;
|
|
|
|
esp_err_t r = esp_ds_encrypt_params(&result, t->iv, &p_data,
|
|
test_hmac_keys[t->hmac_key_idx]);
|
|
printf("Encrypting test case %d done\n", i);
|
|
TEST_ASSERT_EQUAL(ESP_OK, r);
|
|
TEST_ASSERT_EQUAL(t->p_data.length, result.rsa_length);
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(t->iv, result.iv, ETS_DS_IV_LEN);
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(t->expected_c, result.c, ETS_DS_C_LEN);
|
|
}
|
|
}
|
|
|
|
// This test uses the HMAC_KEY0 eFuse key which hasn't been burned by burn_hmac_keys().
|
|
// HMAC_KEY0 is usually used for HMAC upstream (user access) tests.
|
|
TEST(ds, digital_signature_wrong_hmac_key_purpose)
|
|
{
|
|
esp_ds_data_t ds_data = {};
|
|
ds_data.rsa_length = RSA_LEN;
|
|
const char *message = "test";
|
|
|
|
// HMAC fails in that case because it checks for the correct purpose
|
|
TEST_ASSERT_EQUAL(ESP_ERR_HW_CRYPTO_DS_HMAC_FAIL, esp_ds_start_sign(message, &ds_data, HMAC_KEY0));
|
|
}
|
|
|
|
// This test uses the HMAC_KEY0 eFuse key which hasn't been burned by burn_hmac_keys().
|
|
// HMAC_KEY0 is usually used for HMAC upstream (user access) tests.
|
|
TEST(ds, digital_signature_blocking_wrong_hmac_key_purpose)
|
|
{
|
|
esp_ds_data_t ds_data = {};
|
|
ds_data.rsa_length = RSA_LEN;
|
|
const char *message = "test";
|
|
uint8_t signature_data [128 * 4];
|
|
|
|
// HMAC fails in that case because it checks for the correct purpose
|
|
TEST_ASSERT_EQUAL(ESP_ERR_HW_CRYPTO_DS_HMAC_FAIL, esp_ds_sign(message, &ds_data, HMAC_KEY0, signature_data));
|
|
}
|
|
|
|
TEST(ds, digital_signature_operation)
|
|
{
|
|
for (int i = 0; i < NUM_CASES; i++) {
|
|
printf("Running test case %d...\n", i);
|
|
const encrypt_testcase_t *t = &test_cases[i];
|
|
|
|
// copy encrypt parameter test case into ds_data structure
|
|
esp_ds_data_t ds_data = { };
|
|
memcpy(ds_data.iv, t->iv, ETS_DS_IV_LEN);
|
|
memcpy(ds_data.c, t->expected_c, ETS_DS_C_LEN);
|
|
ds_data.rsa_length = t->p_data.length;
|
|
|
|
for (int j = 0; j < NUM_MESSAGES; j++) {
|
|
uint8_t signature[DS_MAX_BITS / 8] = { 0 };
|
|
printf(" ... message %d\n", j);
|
|
|
|
esp_err_t ds_r = esp_ds_start_sign(test_messages[j],
|
|
&ds_data,
|
|
t->hmac_key_idx + 1);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
|
|
ds_r = esp_ds_finish_sign(signature, &ds_data);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(t->expected_results[j], signature, sizeof(signature));
|
|
}
|
|
#if CONFIG_IDF_TARGET_ESP32C3
|
|
ets_hmac_invalidate_downstream(ETS_EFUSE_KEY_PURPOSE_HMAC_DOWN_DIGITAL_SIGNATURE);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
TEST(ds, digital_signature_blocking_operation)
|
|
{
|
|
for (int i = 0; i < NUM_CASES; i++) {
|
|
printf("Running test case %d...\n", i);
|
|
const encrypt_testcase_t *t = &test_cases[i];
|
|
|
|
// copy encrypt parameter test case into ds_data structure
|
|
esp_ds_data_t ds_data = { };
|
|
memcpy(ds_data.iv, t->iv, ETS_DS_IV_LEN);
|
|
memcpy(ds_data.c, t->expected_c, ETS_DS_C_LEN);
|
|
ds_data.rsa_length = t->p_data.length;
|
|
|
|
uint8_t signature[DS_MAX_BITS / 8] = { 0 };
|
|
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
|
|
|
esp_err_t ds_r = esp_ds_start_sign(test_messages[0],
|
|
&ds_data,
|
|
t->hmac_key_idx + 1);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
|
|
ds_r = esp_ds_finish_sign(signature, &ds_data);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
#else
|
|
esp_err_t ds_r = esp_ds_sign(test_messages[0],
|
|
&ds_data,
|
|
t->hmac_key_idx + 1,
|
|
signature);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
#endif
|
|
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(t->expected_results[0], signature, sizeof(signature));
|
|
}
|
|
}
|
|
|
|
TEST(ds, digital_signature_invalid_data)
|
|
{
|
|
// Set up a valid test case
|
|
const encrypt_testcase_t *t = &test_cases[0];
|
|
esp_ds_data_t ds_data = { };
|
|
memcpy(ds_data.iv, t->iv, ETS_DS_IV_LEN);
|
|
memcpy(ds_data.c, t->expected_c, ETS_DS_C_LEN);
|
|
ds_data.rsa_length = t->p_data.length;
|
|
|
|
uint8_t signature[DS_MAX_BITS / 8] = { 0 };
|
|
const uint8_t zero[DS_MAX_BITS / 8] = { 0 };
|
|
|
|
// Corrupt the IV one bit at a time, rerun and expect failure
|
|
for (int bit = 0; bit < 128; bit++) {
|
|
printf("Corrupting IV bit %d...\n", bit);
|
|
ds_data.iv[bit / 8] ^= 1 << (bit % 8);
|
|
|
|
esp_err_t ds_r = esp_ds_start_sign(test_messages[0], &ds_data, t->hmac_key_idx + 1);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
|
|
ds_r = esp_ds_finish_sign(signature, &ds_data);
|
|
TEST_ASSERT_EQUAL(ESP_ERR_HW_CRYPTO_DS_INVALID_DIGEST, ds_r);
|
|
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(zero, signature, DS_MAX_BITS / 8);
|
|
ds_data.iv[bit / 8] ^= 1 << (bit % 8);
|
|
}
|
|
|
|
// Corrupt encrypted key data one bit at a time, rerun and expect failure
|
|
printf("Corrupting C...\n");
|
|
for (int bit = 0; bit < ETS_DS_C_LEN * 8; bit++) {
|
|
printf("Corrupting C bit %d...\n", bit);
|
|
ds_data.c[bit / 8] ^= 1 << (bit % 8);
|
|
|
|
esp_err_t ds_r = esp_ds_start_sign(test_messages[0], &ds_data, t->hmac_key_idx + 1);
|
|
TEST_ASSERT_EQUAL(ESP_OK, ds_r);
|
|
|
|
ds_r = esp_ds_finish_sign(signature, &ds_data);
|
|
TEST_ASSERT_EQUAL(ESP_ERR_HW_CRYPTO_DS_INVALID_DIGEST, ds_r);
|
|
|
|
TEST_ASSERT_EQUAL_HEX8_ARRAY(zero, signature, DS_MAX_BITS / 8);
|
|
|
|
ds_data.c[bit / 8] ^= 1 << (bit % 8);
|
|
}
|
|
}
|
|
|
|
TEST_GROUP_RUNNER(ds)
|
|
{
|
|
RUN_TEST_CASE(ds, digital_signature_parameter_encryption);
|
|
RUN_TEST_CASE(ds, digital_signature_wrong_hmac_key_purpose);
|
|
RUN_TEST_CASE(ds, digital_signature_blocking_wrong_hmac_key_purpose);
|
|
RUN_TEST_CASE(ds, digital_signature_operation);
|
|
RUN_TEST_CASE(ds, digital_signature_blocking_operation);
|
|
RUN_TEST_CASE(ds, digital_signature_invalid_data);
|
|
}
|