diff --git a/components/esp_rainmaker/src/core/esp_rmaker_claim.c b/components/esp_rainmaker/src/core/esp_rmaker_claim.c index 6999731..4cbe823 100644 --- a/components/esp_rainmaker/src/core/esp_rmaker_claim.c +++ b/components/esp_rainmaker/src/core/esp_rmaker_claim.c @@ -788,8 +788,7 @@ static void event_handler(void* arg, esp_event_base_t event_base, #endif /* CONFIG_ESP_RMAKER_ASSISTED_CLAIM */ esp_err_t __esp_rmaker_claim_init(esp_rmaker_claim_data_t *claim_data) { - uint8_t random_bytes[ESP_RMAKER_RANDOM_NUMBER_LEN]; - esp_err_t err; + esp_err_t err = ESP_OK; char *key = esp_rmaker_get_client_key(); if (key) { @@ -814,14 +813,22 @@ esp_err_t __esp_rmaker_claim_init(esp_rmaker_claim_data_t *claim_data) return err; } } - /* Generate random bytes for general purpose use */ - esp_fill_random(&random_bytes, sizeof(random_bytes)); + /* Check if the general purpose random bytes are already present in the storage */ + char *stored_random_bytes = esp_rmaker_storage_get(ESP_RMAKER_CLIENT_RANDOM_NVS_KEY); + if (stored_random_bytes == NULL) { + /* Generate random bytes for general purpose use */ + uint8_t random_bytes[ESP_RMAKER_RANDOM_NUMBER_LEN]; + esp_fill_random(&random_bytes, sizeof(random_bytes)); - /* Store the PoP in the storage */ - err = esp_rmaker_storage_set(ESP_RMAKER_CLIENT_RANDOM_NVS_KEY, random_bytes, sizeof(random_bytes)); - if (err != ESP_OK) { - ESP_LOGE(TAG, "Failed to store random bytes to storage."); - return err; + /* Store the PoP in the storage */ + err = esp_rmaker_storage_set(ESP_RMAKER_CLIENT_RANDOM_NVS_KEY, random_bytes, sizeof(random_bytes)); + if (err != ESP_OK) { + ESP_LOGE(TAG, "Failed to store random bytes to storage."); + return err; + } + } else { + /* Free the copy of the random bytes as it isn't required here. */ + free(stored_random_bytes); } #ifdef CONFIG_ESP_RMAKER_SELF_CLAIM err = esp_rmaker_claim_generate_csr(claim_data, esp_rmaker_get_node_id());