1 /****************************************************************************** 2 * Copyright (c) 2022 Telink Semiconductor (Shanghai) Co., Ltd. ("TELINK") 3 * All rights reserved. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 *****************************************************************************/ 18 #include "blt_fw_sign.h" 19 #include "blt_common.h" 20 #include "drivers.h" 21 #include "proj_lib/firmware_encrypt.h" 22 #include "tl_common.h" 23 24 /** 25 * @brief This function is used to check digital signature of firmware 26 * @param[in] none 27 * @return none 28 */ blt_firmware_signature_check(void)29void blt_firmware_signature_check(void) 30 { 31 unsigned int flash_mid; 32 unsigned char flash_uid[16]; 33 unsigned char signature_enc_key[16]; 34 int flag = flash_read_mid_uid_with_check(&flash_mid, flash_uid); 35 if (flag == 0) { // reading flash UID error 36 while (1) { 37 } 38 } 39 40 firmware_encrypt_based_on_uid(flash_uid, signature_enc_key); 41 42 /* must using "0x20000000 | address" when reading flash data by address pointer */ 43 if (memcmp(signature_enc_key, 44 (u8 *)(FLASH_R_BASE_ADDR | (flash_sector_calibration + CALIB_OFFSET_FIRMWARE_SIGNKEY)), 45 16)) { // signature not match 46 while (1) { 47 } 48 // user can change the code here to stop firmware running 49 } 50 } 51