About Dick Mincher

Dick Mincher · 2020-08-06

Is it possible to compute the ECDH shared secret (pubkey * privkey) by using HAL_PKA_ECCMul, replacing the generator X and Y with the public key X and Y and specifying the private key as the scalar value?Thank you.

Dick Mincher · 2020-02-05

Hello,I am trying to decrypt some data on the L5. The data below can be fed directly into a python crypto library and get a valid result. I am trying to understand the 32-bit alignment requirements of the L5 as well as any possible byte swapping ne...

Dick Mincher · 2019-11-16

In the code below I have AES GCM correctly decrypting data using the Cryptolib. I am trying to decrypt the same data using the HAL_CRYP_AES_XXXX functions and it isn't working.Key is 32 bytes. iv is 12 bytes. header data (aad) is 3 bytes. message...

Dick Mincher · 2019-11-07

I've just installed the latest version of STMCubeIDE on a Mac and am trying to flash a simple program generated by the IDE. I have installed the L4 pack.The firmware on the ST-LINK has been updated.I have no other ST boards and I am not sure if it i...

Dick Mincher · 2020-08-06

Thanks .It doesn't show up on the update list in the IDE (yet?). I've switched to a SEGGER for now. I'll check for updates again later or manually update. Hopefully that fixes it.

Dick Mincher · 2020-08-06

Same problem for me on OSX Catalina with 1.4.0 update.

Dick Mincher · 2020-02-06

In looking at the details of GCM the aad (additionally authenticated data) has no relation to the success of the decryption, only in the generation of the tag. So the aad must be the issue. It is 3 bytes and the length specified is 1 (one word). I...

Dick Mincher · 2020-02-06

I have been able to get further by byte swapping everything. See the _bswap32 calls below.I suspect that DataType might be the issue but I don't know what gets swapped and what doesn't. The code below returns the data correctly however the outtag32...

Dick Mincher · 2019-11-19

When can I get a STM32L562E-DK?Will the HAL PKA be supported and are there examples for that module?Thanks,D i c k

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Computing ECDH shared secret on STM32L562 using HAL_PKA_ECCMul

AES 256 GCM Decryption on STM32L562

HAL_CRYP_AES_XXXXX results different from Cryptolib AES_GCM_XXXXX using the same data.

Nucleo-L4A6ZG failure to program

Re: After updating CubeIDE to version 1.4.0 (Linux), the debugger does not work.

Re: After updating CubeIDE to version 1.4.0 (Linux), the debugger does not work.

Re: AES 256 GCM Decryption on STM32L562

Re: AES 256 GCM Decryption on STM32L562

Re: STM32CubeMX 5.4.0 released