Ask questions and find answers on STM32 security frameworks and tools, including cryptographic libraries, TrustZone, and the Secure Manager.
Hi, with MCU STM32U585QII6QTR we encrypted an AES key using SAES engine and stored it in Internal Flash in RDP Level 0 and then moved to RDP Level 1. When we decrypt the key that was encrypted in RDP Level 0 using SAES engine, we didn't get our origi...
Hi TeamGreetingsI have some general queries with respect to the usage of the TFM Application provided in firmware package.(Some of them were asked previously but to get a clear understanding)1. For calling a secure module(example UART or ADC) - can i...
If LL_CRC_INDATA_REVERSE_WORD is set and 8-bit data is provided via LL_CRC_FeedData8(), the resulting CRC is not what is expected. It appears the combination of word-reversal and byte-submission mangles the submitted data in some way, when I had expe...
Hello all,Quick question. Why does Secure Engine (SE) consume so much RAM for projects supporting KMS and X509? In sample projects, by default it's around 120 [kB] of RAM assigned for SE. For purely "building" purposes we decreased it down to 36 [kB]...
Hi all,I was hoping someone could advise me on the key storage feature of the part number STSAFE-A110 (STSAFA110S8SPL02).We have a device in the market-place at present which is currently undergoing a redesign. The device itself is a network security...
Hello, What is the status of the OEMKEY1 and OEMKEY2 when the RDP regression happens. Are those keys are also erased ? Thanks in advance.Best Regards,Surya S
Hey,I tried to activate the HDP feature / secure software area on H753 following this documentation HDP secure area for STM32H7B3xx microcontrollers - Application note. I did only activate the security option byte not the secure software area itself....
I followed the secure image tutorials as can be seen in AN4992/AN5054 or in videos made available by ST. The process takes place without errors, as can be seen in the images below (start address is 0x08000000).Smart card is valid and working:However...
Hello all,In both files sfu_kms.h and sfu_interface_crypto_scheme.h there is a header guard called SFU_KMS_H.sfu_kms.h:sfu_interface_crypto_scheme.h:Is that a bug or intentional decision?
Hello,I have not been able to debug any of my TrustZone projects. In order to see what was happening I decided to debug and run ST examples, also with TrustZone implemented, from "STM32Cube_FW_L5_V1.5.0" with the following results:- FreeRTOS_Secure_I...
