encrypt 12 bytes with AT88CK490

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#1
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Hi,

I have a AT88CK490 Evaluation Kit  with ATAES132, ATSHA204, ATECC108.

And I wonder if I can encrypt only 12 bytes or less  (and not 16bytes) with this evaluation kit.

I can not encrypt 16 bytes because my device can send 12 bytes maximun at the same time.

I am a noob in security so I d'ont know if I can use CTR mode with AES component ...

 

Thanks ! 

David.

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While I don't really know of limitations of the minimum amount of data or how much it would take.

 

But Atmel guys did create some firmware for a bootloader that has AES encrytion functionality. Being on an 8 bit micro and in a bootloader, the implementation had to be small and fast.

 

Check it out in the Atmel 2054 Serial Bootloader app:

http://www.atmel.com/Images/Atme...

http://www.atmel.com/images/Atme...