About RamaKrishna

RamaKrishna · 2024-01-02

Hi I'm trying to write some data in to ST25dv64 NFC TAG using custom mobile application, before writing data into NFC tag we are encrypting message. encryption method is AES 128 CBC, the encrypted message has some non-printable characters, like 0x91,...

RamaKrishna · 2023-10-08

Hi,In my application using stm32l496zgt6 I'm using DCMI to capture Image and storing image Data in External PSRAM , this code works fine, Problem is whenever integrating this piece of code with application using SBSFU, As soon as MX_FMC_Init(); func...

RamaKrishna · 2024-01-04

Hi,Ok thanks got it, it looks like online tools using some padding mechanisms (pkcs7 and pkcs5 ) and so even if we are giving 16 bytes we are getting 32 bytes output.

RamaKrishna · 2024-01-04

Hi,Iam having same issue what emil28 is facing , In simple term issue is i'm encrypting a message "0000000012345678", when i encrypt this message using AES 128 CBC the encrypted message should be 32 bytes long like this "5BE9894C93D9B6D72A7C83512076...

RamaKrishna · 2024-01-03

Hi,Thank you so much for the confirming, I will check for what is going on app side.

RamaKrishna · 2023-11-08

Hi, Thanks, and sorry for the delayed response, whenever I disable the MPU, Application is able to access the PSRAM, but is there any way to keep the MPU enabled and also use PSRAM.Please suggest, Thanks in advance.

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NFC encryption issue

External PSRAM not working when using SBSFU

Re: Why the STM32_AES_CBC_Encrypt function doesn't return multiple of 64 bytes encrypted message

Re: Why the STM32_AES_CBC_Encrypt function doesn't return multiple of 64 bytes encrypted message

Re: NFC encryption issue

Re: External PSRAM not working when using SBSFU