STM32 MCUs Security

Resolved! Firmware authenticity verification with ECDSA

Hello,I am using the X-CUBE-SBSFU package with the KMS to perform firmware update on my ST MCU.To verify the authenticity of the firmware I use ECDSA. However, I don't understand why I only need to provide a private key but not the public key. If I u...

What the CRC algorithm used in No-Stretch GetCheckSum command of STM32 I2C Bootloader

Hello,There is No-Stretch GetCheckSum command in I2C bootloader command, Does someone know what the CRC algorithm used in the bootloader?Many thanks.B.R.Frank

X-CUBE-AWS demo project on B-L4S5I-IOT01A - Build Issue

HiI have downloaded en.x-cube-aws_v2-0-0.zip file. Imported STM32CubeExpansion_Cloud_AWS_V2.0.0\Projects\B-L4S5I-IOT01A\Applications\Cloud\aws_demos project in to STMCube IDE.(Version: 1.10.1)I am able to build B-L4S5I-IOT01_2_Images_SBSFU and B-L4S5...

About read-out protection, write protection

Hi all,I'm working in a project (with STM32L462) in which we're building our own bootloader to perform secure boot and firmware upgrade. There are some issues we're still struggling with, regarding protection of our code (and data). Hopefully someon...

Resolved! How to create signed firmware for STM32U5 MCU?

Hi ST Team,I am using STM32U575 MCU. I want to create signed binary. I want to upload signed firmware in MCU and also update only new signed firmware via Native bootloader and want to restrict unknown firmware updates.How can I create signed firmware...

Facing issue in Erase ,read and update secure firmware in STM32U585ZIT6Q using UART1 with trust zone option enabled

Hi;I am using STM32U585ZIT6Q controller in my current project. I am enabled Trust Zone option. I am using dual bank option too.I have created two partition in both bank as in attached image.When i try to update firmware using STM32 cube programmer, a...

Resolved! what is this Exit Secure Memory feature in STM32 system bootloader in AN2606 Application note? As per the application note it is used for secured exit from boot and entry from application. kindly explain clearly

Whether this feature is applicable for only stm32g series listed below. Highlighted registers are not available in stm32f401

Resolved! I'm using STM32F103RBT6 with custom linker script where I'm alocating bootloader section in Flash, encryption keys, magic numbers, provision in RAM , but stmcube geberate large bin file > 390 Mbyte

STM32L151 setting RDP=1 prevents update via user bootloader (Boot From Flash)

I have a user bootloader I have used across various STM32 parts over 12 years. In production RDP level 1 is enabled and this has always been fine for various STM32F1, F2, F4 based products we have in production, and for thousands of units in the fiel...

STM32WB35 - Can't write or read flash memory (J-Link)

Hello, I'm a bit stuck and I am not sure what to do so I am asking for your help.Here is the problem :I have a custom board with a STM32WB35 that was working fine for a while. But after multiple (incomplete) boot when I was soldering the battery to m...