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https://github.com/espressif/esp-idf.git
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52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <string.h>
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#include <inttypes.h>
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#include <errno.h>
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#include "esp_system.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_tee_attestation.h"
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static const char *TAG = "example_tee_attest";
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#define ESP_ATT_TK_NONCE (0xA1B2C3D4)
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#define ESP_ATT_TK_CLIENT_ID (0x0FACADE0)
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#define ESP_ATT_TK_BUF_SIZE (1792)
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#define ESP_ATT_TK_PSA_CERT_REF ("0716053550477-10100")
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static uint8_t token_buf[ESP_ATT_TK_BUF_SIZE] = {0};
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void app_main(void)
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{
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ESP_LOGI(TAG, "TEE Attestation Service");
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uint32_t token_len = 0;
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/* Generate entity attestation token using the following parameters
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* and return the token length in token_len:
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* - Nonce value for freshness
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* - Client ID to identify requester
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* - PSA certification ID reference string
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* - Buffer to store the generated token
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*/
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esp_err_t err = esp_tee_att_generate_token(ESP_ATT_TK_NONCE, ESP_ATT_TK_CLIENT_ID, (const char *)ESP_ATT_TK_PSA_CERT_REF,
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token_buf, sizeof(token_buf), &token_len);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to generate entity attestation token!");
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abort();
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}
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/* Print the generated token details - length and contents */
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ESP_LOGI(TAG, "Attestation token - Length: %lu", token_len);
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ESP_LOGI(TAG, "Attestation token - Data:\n'%.*s'", (int)token_len, token_buf);
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}
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