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
STM32 MCUs Security
Ask questions and find answers on STM32 security frameworks and tools, including cryptographic libraries, TrustZone, and the Secure Manager.
Forum Posts
OEMiROT example flash protect sector problem
hello, I'm run a STM32H573DK in OEMiROT example.but following errors occured.[INF] TAMPER Activated[INF] BANK 1 secure flash [0, 15] : OB [0, 14][ERR] Unexpected value for secure flash protection so, I find why occurred this error. In the ob_flash_p...
Resolved! How to integrate SBSFU in STM32U585 series
Hello support team,Have a Nice day.I am working on STM32U585ZIT6 Controller and investigating SBSFU for firmware upgrading.I list our specifications for a custom bootloader below.Enable TrustZoneEnable Dual bankRun time firmware write in the second b...
Secure key storage using SAES engine
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...
STM32U585 TFM Package Usage for Secure Project access and Crypto Module Implementation
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...
STM32F7 CRC unit: is behavior of bit reversal settings on 16- and 8-bit data sizes intentional?
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...
Resolved! SBSFU | KMS and X509 support | RAM usage by SE
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]...
Key Storage feature - STSAFE-A110
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...
RDP regression - OEMKEY1 and OEMKEY2
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
Resolved! H753 Target not found after security option byte
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....