Hewlett-packard Development Company, L.P.

Valluddin Y Ali

Lan Wang

Manuel Novoa

Jennifer E Rios

Wael M Ibrahim

A system comprises a first operating environment and a second operating environment. The first and second operating environments exchange information in encrypted form using a shared encryption key (K). The first and second operating environments cooperate to change the encryption key Kusing another shared encryption key (K). The encryption key Kis changed upon the encryption key Kbeing changed.

Changing of shared encryption key

A system comprises storage and a basic input/output system (BIOS) stored in the storage and adapted to be executed by a processor. The BIOS has an associated setting. The system receives an encrypted value that comprises an encrypted hash of a request to alter at least one of the BIOS and the setting. A first key is used to encrypt the value. The processor uses a second key corresponding to the first key to authenticate said request.

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Houston, TX, United States of America

Valluddin Y Ali