Abstract: An information processing unit and methods therefore which render it more difficult to infer information being processed within an information processing unit by observing the unit's current consumption or electromagnetic radiation. Specifically, the information processing unit preferably encrypts and decrypts data when the data is read from/written to memories within the unit. The encryption/decryption process may include the use of multiple cryptographic keys, permutated data storage locations, randomly generated keys, and permutated data processing steps.

Abstract: A method for distributing data input/output load is performed by a management server which is connected to at least one storage device for storing data and for inputting or outputting the stored data in response to an external request, one or more computers for performing predetermined processes and making a request for input and output of the data stored in the storage device if necessary, and more than one switches each of which has a port connected to the storage device and the computers and provides a connection between each port of the switches.

Abstract: An information processing unit and methods therefore which render it more difficult to infer information being processed within an information processing unit by observing the unit's current consumption or electromagnetic radiation. Specifically, the information processing unit preferably encrypts and decrypts data when the data is read from/written to memories within the unit. The encryption/decryption process may include the use of multiple cryptographic keys, permutated data storage locations, randomly generated keys, and permutated data processing steps.