How to enable SHA256 in image footer
Posted: Tue Sep 26, 2023 8:31 am
We have used the SHA256 that was appended at the end of the binary file to verify integrity when uploading the file to the our backend for OTA to client ESP32 devices. Suddenly the ESP-IDF stopped generating these checksums and I have no idea why and how to enable them again.
For reference this is a new binary generated:
And this was a previous binary already on the backend server:
Does anyone have any idea how to get the ESP-IDF to generate this SHA256 validation hash again in the image footer?
Best regards,
Max
For reference this is a new binary generated:
Code: Select all
max@max-linuxbox:~/Code/mtappro-app$ esptool.py image_info --version 2 ./build/MTapPro.bin
esptool.py v4.7.dev1
File size: 1794176 (bytes)
Detected image type: ESP32-C3
ESP32-C3 image header
=====================
Image version: 1
Entry point: 0x40380430
Segments: 5
Flash size: 4MB
Flash freq: 80m
Flash mode: DIO
ESP32-C3 extended image header
==============================
WP pin: 0xee (disabled)
Flash pins drive settings: clk_drv: 0x0, q_drv: 0x0, d_drv: 0x0, cs0_drv: 0x0, hd_drv: 0x0, wp_drv: 0x0
Chip ID: 5 (ESP32-C3)
Minimal chip revision: v0.3, (legacy min_rev = 3)
Maximal chip revision: v0.99
Segments information
====================
Segment Length Load addr File offs Memory types
------- ------- ---------- ---------- ------------
1 0x50f08 0x3c150020 0x00000018 DROM
2 0x032c4 0x3fc96c00 0x00050f28 DRAM, BYTE_ACCESSIBLE
3 0x0be1c 0x40380000 0x000541f4 IRAM
4 0x14b2c8 0x42000020 0x00060018 IROM
5 0x0ad84 0x4038be1c 0x001ab2e8 IRAM
ESP32-C3 image footer
=====================
Checksum: 0x76 (valid)
Application information
=======================
Project name: MTapPro
App version: 0.0.17-dirty
Compile time: Sep 26 2023 10:21:56
ELF file SHA256: 0ea901793494fd713023d898f4ef7d22d3d05898ce7446565f9bd77309142531
ESP-IDF: v5.1.1
Secure version: 0
Code: Select all
max@max-linuxbox:~/Code/mtappro-app$ esptool.py image_info --version 2 ~/Downloads/a4e23936-7ac3-4561-aa09-431edec14a00
esptool.py v4.7.dev1
File size: 1794176 (bytes)
Detected image type: ESP32-C3
ESP32-C3 image header
=====================
Image version: 1
Entry point: 0x40380430
Segments: 5
Flash size: 4MB
Flash freq: 80m
Flash mode: DIO
ESP32-C3 extended image header
==============================
WP pin: 0xee (disabled)
Flash pins drive settings: clk_drv: 0x0, q_drv: 0x0, d_drv: 0x0, cs0_drv: 0x0, hd_drv: 0x0, wp_drv: 0x0
Chip ID: 5 (ESP32-C3)
Minimal chip revision: v0.3, (legacy min_rev = 3)
Maximal chip revision: v0.99
Segments information
====================
Segment Length Load addr File offs Memory types
------- ------- ---------- ---------- ------------
1 0x50f48 0x3c150020 0x00000018 DROM
2 0x032c4 0x3fc96c00 0x00050f68 DRAM, BYTE_ACCESSIBLE
3 0x0bddc 0x40380000 0x00054234 IRAM
4 0x14b26c 0x42000020 0x00060018 IROM
5 0x0adc4 0x4038bddc 0x001ab28c IRAM
ESP32-C3 image footer
=====================
Checksum: 0xed (valid)
Validation hash: 3eddca940cb8401dddbab3a2413bead6ecb16751bc95ee66c65d14896d2facbb (valid)
Application information
=======================
Project name: MTapPro
App version: 0.0.13
Compile time: Aug 29 2023 15:07:03
ELF file SHA256: 4955c31c7a8ae43a16f0873c42151f833e57471d196def7c2503751a9cbd7536
ESP-IDF: v5.1.1
Secure version: 0Best regards,
Max