STM32 MCUs Security

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RSA CRYPTO LIBRARY

Posted on February 01, 2018 at 14:46Hi.I'm using an RSA cryptographic library and I have a big issue with the verification process.ST crypto library for RSA has a 'standard' module, message, key pairs and signatures in its main program.I need to use...

Trouble with the CRC unit on STM32F407

Posted on January 17, 2018 at 10:52Hello everyoneI have some trouble with the CRC unit on my STM32F407 MCU.Before each time I am going to use it to calculate a checksum, I reset it and after doing so I double check that the CRC data register (CRC_DR...

Nils B by Associate II
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X-CUBE-CRYPTOLIB AES-CCM optimization

Posted on January 26, 2018 at 09:27Hi,I'm using AES CCM algorithm from X-CUBE-CRYPTOLIB (STM32AccHwCryptoV3.1.0_L4_KEIL_otslsm1elfspf.lib) in sensitive real time system and unfortunelaty it does not fit our time requirement. We would like to investi...

Readout protection only for Flash, not EEPROM possible?

Posted on January 24, 2018 at 15:19Hi,we are facing troubles with the readout Protection on the STM32L0: when you secure the chip and then want to do a firmware update, the Settings and serial numbers in EEPROM also are erased. Can we somehow protec...

STM32F407 and CRC

Posted on January 19, 2018 at 11:55Hello friends.I created CRC calculator, but I don't know, how to compare results.My input data:uint32_t data[16] = {       0x1234, 0x456, 0x78, 0x09,       0x10, 0x100, 0x1000, 0x01,       0x54, 0x35, 0x98, 0x2432,...

STM32F103 CRC32 of uint8_t buffer

Posted on January 10, 2018 at 14:51 Hi there, I wrote a serial protocol to exchange data between MCU and a PC. This protocol provides a checksum to verify data integrity. At the moment I use a simple sum of each byte but I think that the...

Fede Rico by Associate III
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crypto lib - VFP error

Posted on January 09, 2018 at 14:27HelloI would like to use the crypto lib with gcc (eclipse/ system workbench).The compiler returns this:error: xxx.elf uses VFP register arguments, libSTM32CryptographicV3.0.0_CM4_GCC_ot.a(crypto.o) does not.I'm not...

tarzan2 by Associate III
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STM32L4 Read Protected when flashing

Posted on December 19, 2017 at 09:21Good morning,I'm working in my custom application based on STM32L4.Sometimes, a problem appears when trying to flash the device: If I try to flash it with Keil and Ulink2 interface, a message suddenly appears when...

SPI Broken Communication

Posted on January 31, 2016 at 10:19Hello, I am currently evaluating the EVALSTPM34 Smart Metering IC so that a decision can be made about including it in a smart home management system. Here is the STPM34 IC datasheet for reference: https://my.st.co...

ahmad2 by Associate II
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