Ask questions and find answers on STM32 security frameworks and tools, including cryptographic libraries, TrustZone, and the Secure Manager.
Hi,The CRC function of the flash module in the STM32H753 is documented as using the polynomial 0x04c11DB7. If I use this module to calculate a CRC over 128 bytes all set to zero I get a non-zero answer (0x11e66c62) so it must also be using an initia...
I have an STM32F405 (which has no PCROP). I want RDP Level 1, but also want to re-flash firmware updates using the bootloader (and the DeFuse utility). With RDP Level 0: everything works: I can reflash firmware updates, no problem.But when optio...
Is it possible to set level 2 RDP to just a subset of a certain Flash bank? not the entire bank. (Begin Address -> End Address for example)Is it possible to set RDP levels for an external flash not the internal MCU flash?
Hi all,I am sending a message via USART from STM32F303 (later to be moved from STM32F3 to STM32F427) to an X86.The message consists of 2 parts payload + crc ,CRC is calculated on stm32 using crc hardware engine and calling CRC_CalcCRC/CRC_CalcCRC16bi...
I've strange problems with my custom board with microSD card:The same code doesn't work if I run debug build and works well if I flash the realise. It gives error CRC. And the error is the same if I remove the card. It looks like that response did no...
Hi.. Geeks From few days I'm playing with SBSFU. I'm using default application SBSFU files (STM32L496G-Discovery_AWS) with custom user application with STM32L496ZG The default code was ported on STM32L496AG which is x-cube AWS I have simply adopted i...
Hello Experts,I am trying to integrate the "STM32 Cryptographic Library" to my application. The library name is "libSTM32CryptographicV3.1.3_CM4_GCC_ot_fpu.a".How big is the stack size used by this library?When I used the library, RTOS got a hard f...
I am trying to sign and verify messages with the STM32 CryptoLibrary and the ED25519 signing functionality.But the created signature is not the same as the created ED25519 signature created with the CryptoPP library.My code for generating a signature...
Hi,I could successfully integrate the SBSFU feature to our application. everything goes well until I get a failure after swapping the images.FW signature is not getting verified and function SE_SP_SMUGGLE is returning SE_ERROR which is causing the er...
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