Abstract: This scheme proposes a method for reducing the number of security keys allocated to each node of a wireless network, and number of security keys required by the wireless network. N nodes are grouped into a first and a second groups, each group comprising N/2 nodes without nodes being shared. The first group is grouped such that at least two nodes are included and at least one node is different, and first security keys are allocated to the first group nodes without any security keys being shared among the groups. (N/2) groups are grouped to include a security key arrangement of (B/2) number of security keys of B number of second security keys, and the second security keys of each group are allocated to each node of the first group. Here, the security key arrangement of each group differs from that of the others.

Abstract: A method and system for distributed certificate management in an ad-hoc network including a plurality of nodes, the method includes making a certificate revocation list (CRL), distributing the CRL among the plurality of nodes, receiving portions of the distributed CRL from a predetermined number of nodes, and reconstructing the CRL by combining the portions of the distributed CRL.