Secure GroupCommunication Using Robust Contributory Key Agreement

Secure Group Communication Using Robust Contributory Key Agreement Yair Amir Yongdae Kim Cristina Nita-Rotaru John Schultz Jonathan Stanton Gene Tsudik Abstract Contributory group key agreement protocols generate group keys based on contributions of all group members. Particularly appropriate for relatively small collaborative peer groups, these protocols are resilient to many types of attacks. Unlike most group key distribution protocols, contributory group key agreement protocols offer strong security properties, such as key independence and perfect forward se- crecy.

• view delivery
• nested event
• strong security properties
• key independence
• group membership
• protocol
• message
• view
• process
• group