The popularity of multimedia applications is rapidly growing nowadays. The confidentiality of
video communication is of primary concern for commercial usage, eg in video on demand …

Multicasting is a scalable solution for group communication. Whereas secure unicast is a
well-understood problem, scalable secure multicast poses several unique security …

In wireless sensor networks there is a need to securely store monitored data in a distributed
way whenever it is either not desired or simply not possible to transmit regional volatile …

The problem of solving two sided linear equations in the idempotent semirings Rmax and
Rmin has been proved to be reducible to the problem mean payoff game which is of the …

Certificate revocation is an outstanding problem in PKI. This paper extends Naor's scheme
of dynamic hash tree in order to optimize performance. Set of revoked certificates is divided …

Cryptographers need to provide the world with a new encryption standard. DES, the major
encryption algorithm for the past fifteen years, is nearing the end of its useful life. Its 56-bit …