topic Re: CMAC AES authentication and encryption in CodeWarrior Development Tools

CMAC AES authentication and encryption

kellylim — Mon, 12 Dec 2016 08:45:08 GMT

Hi all,

I am new in the community and I am doing on a project with the MC9S12XDP512 board, I need to do CMAC AES authentication and encryption via CAN communication on the board.I have tried several AES encryption codes in C in codewarrior but it keep showing errors in the program. Can anyone help?

Thank you so much.

Re: CMAC AES authentication and encryption

ZhangJennie — Tue, 13 Dec 2016 09:26:11 GMT

Hi Kelly,

Please specify what error do you have with screenshot?

Have a great day,
Jennie Zhang

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Re: CMAC AES authentication and encryption

kellylim — Wed, 14 Dec 2016 06:17:39 GMT

hi Jennie,

The following image shows the error, i tried adding the header file it can't work too.

Thank you very much.

Best Regards,

Kelly Lim

Re: CMAC AES authentication and encryption

ZhangJennie — Wed, 14 Dec 2016 06:23:46 GMT

Hi Kelly,

From your screenshot, your code can not find some header files in your project.

while the file for example stdafx.h is not included in CW install folder.

did you get it anywhere and include it in your project folder?

Best Regards

Jennie

Re: CMAC AES authentication and encryption

kellylim — Wed, 14 Dec 2016 06:45:19 GMT

Hi Jennie,

It works in visual studio. Can I create the header files in CW? so that this C++ code can work in CW as well?

Thank you.

Best Regards,

Kelly

Re: CMAC AES authentication and encryption

ZhangJennie — Wed, 14 Dec 2016 09:01:58 GMT

Hi Kelly,

No, CW for HCS12 is not full C++ compatible.

Some features of the C++ language are not designed for embedded controllers. There are some C++ restrictions for embedded MCU.

you should find it in {CW5.x install directory}\ Help\PDF\ Compiler_HC12.pdf:

- search doc with keyword “C++, EC++, compactC++”.

- Appendices E “Known C++ Issues in the HC(S)12 Compilers” which explains in detail, what features are not supported.

Have a great day,
Jennie Zhang

Re: CMAC AES authentication and encryption

kellylim — Wed, 14 Dec 2016 09:07:12 GMT

Hi Jennie,

Thank you so much for your help. Do you know how to do authentication or encryption in Cw?

Thank you.

Best regards,

Kelly Lim

Re: CMAC AES authentication and encryption

kellylim — Wed, 21 Dec 2016 03:14:36 GMT

Hi Jennie,

Thank you so much for your help. I am still trying out the examples as it don't seems to work for my board.

Thank you.

Best regards,

Kelly Lim

Re: CMAC AES authentication and encryption

ZhangJennie — Wed, 21 Dec 2016 04:45:29 GMT

Kelly,

As I know, we have customer refer VKSP demo code for developing HCS12 device.

But unfortunately, we don't have demo code of that.

Have a great day,
Jennie Zhang

Re: CMAC AES authentication and encryption

kellylim — Wed, 21 Dec 2016 10:28:53 GMT

Hi Jennie,

Thank you. I will continue to try.

Best Regards,

Kelly Lim