topic Re: 802.15.4 security in 8-bit Microcontrollers

802.15.4 security

saurabh — Tue, 10 Jun 2008 20:23:18 GMT

I have looked at the MyWirelessDemo 8 for security over 802.15.4. I have selected security mode as 0x01 (ACL mode) and security level as 0x02 (AES-CCM-128) on the coordinator and the end device.
The demo runs perfectly fine.

I am not able to understand the flow of the code. How does the coordinator allow the end devices to associate to it without checking the ACL? Is there any provision to add entries to the ACL?
The documentation does not talk anything about this.

It would be great if I get the exact function that deals with check/ enforcing the security.

Re: 802.15.4 security

addiyi — Wed, 11 Jun 2008 18:06:38 GMT

Hello Saurabh,

You can not access security functions, because this functions are embedded into 802.15.4_MAC libraries. More informations about Security, you can find in 802154MPSRM.pdf, Chapter 4.11 Security and also in 802.15.4 Standard and in the ZigBee Security Services Specification.

BR,
Adrian

Re: 802.15.4 security

saurabh — Fri, 13 Jun 2008 19:39:27 GMT

Thanks for the information.

I want to create a star network that has 1 coordinator and 2 end
devices. The coordinator should only allow these 2 end devices to
associate to the PAN. All the other devices that try to associate to
the PAN should be denied access.

To achieve this scenario I will have to use the ACL functionality. The
code related to ACL will have to be modified for the same.

I am to able to identify the exact function which when modifed will enforce these restrictions?