Revision with unchanged content. Current market analysis indicates that
the most challenging issue in IPTV relates to content security. To
achieve high access control a sophisticated group key management is
required. This key must be updated and distributed each time a new
member joins the group or a current one leaves it. Because of its
dependency on time-consuming cryptographic operations this rekeying
process can become a bottleneck in the Pay-TV system over Internet. This
book tackles this problem by providing novel high-performance
architectures, called rekeying processors, which act as coprocessors in
the server environment to accelerate group rekeying. The direct effect
thereof is higher quality of service regarding joining members and
higher access control concerning leaving ones. In addition, a
benchmarking framework is presented to evaluate the performance of
different rekeying algorithms. The book is intended for Internet Pay-TV
providers who plan to scale up their service without loss of access
control or QoS. Designers of new rekeying solutions will find a reliable
benchmark framework to evaluate their algorithms. Non-specialists will
gain an insight into a serious challenge in the emerging IPTV.
