Secure Collaborative Key Management for Dynamic Groups in Mobile Networks

Box 4

Group merging.

Assume that a group is merged into a group where , and the merged

group = . is the master of and is the master of .

Step  1. selects a random number in , computes = mod p, and updates

the locker list into = , , .

(delegation) → :

Step  2. selects random in for new group key and computes key-locks with updated locker list.

: ,