Ask questions and find answers on STM32 security frameworks and tools, including cryptographic libraries, TrustZone, and the Secure Manager.
I'm trying to understand an issue I am having with chaining decryption, using the shared key out of the SAES and have distilled the problem to the following example:I am attempting to encrypt and decrypt large blocks of data (65536 bytes). I can encr...
Hello,I'm not sure if I understand the RDP regression mechanism described on STM32U0 reference manual (RM0503 rev4) correctly. My general understanding is that it's possible to go from RDP2 => RDP1 => RDP0 if the OEM keys are set - if they are not se...
Hi guys i am trying to use stm32cryptolib library's encryption function. the main problem i am facing when i am trying to call the cmox_initialize function it is giving the error cmox_init.c:(.text+0x1a): undefined reference to `cmox_ll_init'collect...
We are here trying to achieve the HMAC-SHA-125 generation.we are using the cryptolib-4.3.5 . the implementation is in PNG file( only the main and hmac computation is shown)we are not getting any compilation error but we are getting ERROR as program o...
Friends, hello, I encountered a problem with starting DWT with PRODUСT STATE = 72;I measure the time between pulses (white beam of the logic analyzer) by the EXTI5 interrupt input (falling edge of the signal), TIME_LONG_SENS = DWT->CYCCNT / (SystemCo...
This is a follow up to this post:https://community.st.com/t5/stm32-mcus-wireless/conflict-betwenn-pka-and-ble-after-pairing/m-p/76599?search-action-id=65799734948&search-result-uid=76599So if I understand correctly , After CPU2 BLE stack finished wor...
According to Wikipedia The MODBUS uses the CRC-16-ANSI also known as CRC-16-IBM. The normal hexadecimal algebraic polynomial being 8005 and reversed A001Initial value: 65,535.Example of frame in hexadecimal: 01 04 02 FF FF B8 80(CRC-16-ANSI calcul...
Hi everyone,I tried Secure Firmware Install (SFI) with the Nucleo-H563ZI. The process failed, however my device is still accessible. By connecting to the device via Hot plug and Access port 1 I am able to see that the device is in "Provisioning" stat...
Hi,I have a STM32u585 where SFI worked on first attempt. Then I did a factory reset , post that I am not able to get SFi working again at all. Is there a residual / stale state I need to clear to be able to do SFI again?We do not have any OEM Keys se...
Hi All,I am following the UM2262 document. I will add a screenshot. I enabled the ENABLE_IMAGE_STATE_HANDLING flag to enable rollback, but after updating UserApp.bin, the device continues to reset. I will add a debug log screenshot (it’s not jumping ...
