[Tinyos-help] 802.15.4 security measures

[Raunak Roongta]

Hi All,
I am working on a project to implement securities measures in the IP
based Wireless Sensor network and it uses 802.15.4 as the data link
layer. There are securities features implemented in 802.15.4 such as
confidentiality, freshness and data integrity. I searched online for
any help, but only found about tinysec, which is there in tinyos 1.0.
We are using Tinyos 2.0. Is there any followup regarding tinysec in
2.x versions?

Any help regarding the implementing the security measures of 802.15.4
in tinyos will be of great help.

Thanks

Raunak Rungta