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Tan Han Chiang | 1 Jun 2007 03:26

Re: MicaZ standalone AES Encryption

Hi,

did anyone here managed to use the micaz standalone AES encryption sucessfully?? Also does anyone knows the crypto used for the AES standalone encryption? Is it CBC, counter mode or.... ??

Any help would be appreciated. Thanks

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<div>
<div><span class="296442201-01062007">Hi,</span></div>
<div>
<span class="296442201-01062007"></span>&nbsp;</div>
<div><span class="296442201-01062007">did anyone here 
managed to use the micaz standalone AES encryption sucessfully??&nbsp;Also does 
anyone knows the crypto used for the&nbsp;AES&nbsp;standalone encryption? Is it 
CBC, counter mode or.... ??</span></div>
<div>
<span class="296442201-01062007"></span>&nbsp;</div>
<div><span class="296442201-01062007">Any help would be 
appreciated. Thanks</span></div>
<div>
<span class="296442201-01062007"></span>&nbsp;</div>
<table><tr><td bgcolor="#ffffff">------------ Institute For Infocomm Research - Disclaimer -------------<br>
This email is confidential and may be privileged.  If you are not the intended recipient, please delete it and notify us immediately. Please do not copy or use it for any purpose, or disclose its contents to any other person. Thank you.<br>
--------------------------------------------------------<br>
</td></tr></table>
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Steve McKown | 1 Jun 2007 05:44

Re: Re: MicaZ standalone AES Encryption

On Thursday 31 May 2007 19:26, Tan Han Chiang wrote:
> did anyone here managed to use the micaz standalone AES encryption
> sucessfully?? Also does anyone knows the crypto used for the AES
> standalone encryption? Is it CBC, counter mode or.... ??

The micaz uses the CC2420 radio, which has AES-128 functionality built into 
hardware.  It can support Counter, CBC-MAC or CCM modes somewhat seamlessly 
as part of the packet send and receive workflows.  You can also use it to do 
standalone encryption operations on non-packet data.  CCM is the most 
interesting mode, in that it is a combination of Counter and CBC-Mac.  The 
CC2420 data sheeet has all the details.

We're going to be looking into using the CC2420 and AES for an upcoming 
project.  At first blush, it looks like the packet-layer stuff will be pretty 
straightforward and key mangement will be the challenge if you need to do 
dynamic keying.  TinySec is a security layer developed for TinyOS 1.x that 
might have some other useful information for you.

Steve