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fix(examples/tee): Remove dead code and fix unintialised scalar usage

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This commit is contained in:
harshal.patil
2026-01-21 10:10:11 +05:30
parent 469ead652b
commit 16e01b7b75
1 changed files with 6 additions and 8 deletions
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examples/security/tee/tee_secure_storage/main/tee_main.c
+6 -8
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@@ -41,10 +41,6 @@ static esp_err_t verify_ecdsa_secp256r1_sign(const uint8_t *digest, size_t len,
return ESP_ERR_INVALID_ARG;
}
if (len == 0) {
return ESP_ERR_INVALID_SIZE;
}
esp_err_t err = ESP_FAIL;
psa_key_id_t pub_key_id = 0;
@@ -75,6 +71,9 @@ exit:
static void example_tee_sec_stg_sign_verify(void *pvParameter)
{
psa_key_id_t priv_key_id = 0;
psa_key_attributes_t priv_key_attr = PSA_KEY_ATTRIBUTES_INIT;
char *msg = (char *)pvParameter;
ESP_LOGI(TAG, "Message-to-be-signed: %s", msg);
@@ -108,10 +107,7 @@ static void example_tee_sec_stg_sign_verify(void *pvParameter)
.tee_key_id = cfg.id,
};
psa_key_id_t priv_key_id = 0;
psa_key_attributes_t priv_key_attr = PSA_KEY_ATTRIBUTES_INIT;
psa_algorithm_t alg = PSA_ALG_ECDSA(PSA_ALG_SHA_256);
psa_set_key_type(&priv_key_attr, PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1));
psa_set_key_bits(&priv_key_attr, ECDSA_SECP256R1_KEY_LEN * 8);
psa_set_key_usage_flags(&priv_key_attr, PSA_KEY_USAGE_SIGN_HASH);
@@ -129,6 +125,7 @@ static void example_tee_sec_stg_sign_verify(void *pvParameter)
status = psa_sign_hash(priv_key_id, alg, msg_digest, msg_digest_len, signature, sizeof(signature), &signature_len);
if (status != PSA_SUCCESS) {
ESP_LOGE(TAG, "Failed to generate signature!");
psa_destroy_key(priv_key_id);
goto exit;
}
@@ -139,19 +136,20 @@ static void example_tee_sec_stg_sign_verify(void *pvParameter)
status = psa_export_public_key(priv_key_id, pub_key, sizeof(pub_key), &pub_key_len);
if (status != PSA_SUCCESS) {
ESP_LOGE(TAG, "Failed to fetch public-key!");
psa_destroy_key(priv_key_id);
goto exit;
}
err = verify_ecdsa_secp256r1_sign(msg_digest, msg_digest_len, pub_key, pub_key_len, signature, signature_len);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to verify signature!");
psa_destroy_key(priv_key_id);
goto exit;
}
ESP_LOGI(TAG, "Signature verified successfully!");
exit:
psa_destroy_key(priv_key_id);
psa_reset_key_attributes(&priv_key_attr);
vTaskDelete(NULL);
}