STM32 MCUs Security

Use of STM32L4 HAL_CRYP hardware in LORAWAN

I've tried to find an example code of use of crypto harware accelerator in LORAWAN but i haven't been able to find any . Does someone have an example expecially concerning the use of AES CMAC?Regards

What is the correct sequence to remove read protection (RDP level 1 -> RDP level 0) using bootloader over SPI-bus?

I working with the STM32F446-microcontroller and I need to upgrade firmware and change the option bytes on it using the built-in bootloader (en.CD00167594.pdf, AN2606) using SPI-bus (en.DM00081379.pdf, AN4286). I am able to successfully modify all op...

STM32L1xxx Hardware CRC calculation

I am working on STM32L151QD MCU. I want to implement CRC feature in my application using STM hardware CRC block.i am trying below steps to configure HW CRC:uint32_t crc; uint32_t t_buffer[4] = {1,2,3,4};  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_CRC, ENAB...

I want to use AES encryption to encrypt a simple text like "hello world" in 128 bit format with stm32f4-discovery board. please suggest me the way to do this.

"AES_CMAC_Encrypt_Finish" function always return bad_context error

Hello. AllI'm using STM32L151 MCU, stm32 crypto library v.3.0.0.I implemented CMAC according to the sample code but it returned "AES_ERR_BAD_CONTEXT". I could not find any reason.. please let me know to solve this problem.!!Here is my code for CMAC e...

STM32H7 Flash Bank CRC

I am trying to use the hardware CRC built into the embedded flash module. When I use the start and end addresses and kick off the CRC, the processor halts and I have to do a full flash erase to get it back. Are the start and end addresses relative ...

Enable readout protection using system memory bootloader

I have been using the STM32 serial bootloader, instead of coding my own bootloader, for a while now. But lately I wanted to protect my code, so I tried to enable readout protection (RDP) level 1. This is meant to prevent the user to read the flash. H...

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STM32 RDP2 prevents the modification of OPTLOCK?

Hi everyone,we have a bootloader that writes new application code to the flash bank 2 in an STM32H7 and afterwards swaps the banks to execute the new code. The procedure for swapping is something like this:   unlock OPTLOCK   set SWAP_BANK_OPT   set ...