Abstract: A method receives a set of data. Further, the method receives a traffic key. In addition, the method determines a traffic protection group for the set of data. The method also encrypts the set of data according to the traffic key to generate an encrypted set of data. Finally, the method provides the encrypted set of data through a network to a device.

Abstract: A method and system for transmitting content from a content provider to a caching server and then from the caching server to a viewer. The method comprises encrypting the content with a pre-encryptor application before the content is transmitted to the caching server. The pre-encryptor application uses a pre-encryption subkey provided by a key storage service to perform the pre-encryption. The key storage service is a stand-alone component of the system and generates, stores, and distributes the pre-encryption subkeys.

Abstract: An information service system for providing interruption-free information access service is disclosed to serve multiple users communicating to the system via a communications network. The system comprises a main program subsystem, an information access agent subsystem and an information storage subsystem. The main program subsystem executes a main program for providing information access service to the users by receiving user-issued I/O access requests. The information storage subsystem stores information required for implementing the information service. The I/O access agent subsystem processes user-issued I/O access requests by registering the requests received by the main program subsystem and submits the received requests to the information storage subsystem for implementing the read or write accesses corresponding to the requests. The I/O access agent subsystem relays the result of the requests to the main program subsystem for returning to the users upon completion of the submitted requests.