Security for Multihop Wireless Networks

252  ◾  Security for Multihop Wireless Networks

10.3.3 Security Requirements

To secure a distributed scope, common security aspects, such as data confidential-

ity and integrity that are also desirable in other sensor network security schemes,

should be provided. e following requirements were recognized in conjunction

with access control in the scopes framework.

◾ Secure group key exchange. e basis for scope-level access control is to be able

to securely exchange scope keys to establish a trusted group communication.

is scheme should provide a secure exchange of symmetric scope keys to

enable efficient cryptography between scope members.

◾ Group-level access control. e scope-level access control extends the secure

key exchange and adds ac ...