Patent ID: 7099477
Filing Date: 2006-08-29
Classification: G06F,H04L

Abstract:
1. A method for secure backup and restore of a context encryption key (CEK) on a device in a secured processing system, said method comprising: first encrypting an information including said CEK within a first device using a first key to obtain a first encrypted result, responsive to receiving a request to backup said CEK; first storing said first encrypted result outside of said first device; first sending said first encrypted result to a server, responsive to receiving a request to restore said CEK; first decrypting said first encrypted result at said server using a second key associated with said first key to obtain a decrypted result; re-encrypting said decrypted result with a third key to obtain a second encrypted result; transmitting said second encrypted result to a second device within said system; and second decrypting said second encrypted result within said device using a fourth key associated with said third key to retrieve said information.