Date Added: Nov 2011
Securing data is becoming a crucial need for most internet-based applications. Whereas the problem of data confidentiality has been widely investigated, the problem of how to ensure that data, when moving among different parties, are modified only according to the stated policies has been so far not deeply investigated. At present data security is an area where corporate spend huge amount to ensure that their data and their client's data are not tampered with. This paper proposes an approach that addresses data integrity and confidentiality in content adaptation and caching by intermediaries. This approach permits multiple intermediaries to simultaneously perform content services on different portions of the data.