—Popularity of group-oriented applications motivates research on security and privacy protection for group communications. A number of group key agreement protocols exploiting ID...
Using smart cards, remote user authentication and key agreement can be simplified, flexible, and efficient for creating a secure distributed computers environment. Addition to use...
A key tree is a distributed data structure of security keys that can be used by a group of users. In this paper, we describe how any user in the group can use the different keys i...
Suppose that messages have been signed using a user's signature private key during the period of time after a key compromise but before the compromise is detected. This is a ...