Patent ID: 6944300

Claim:
A method for migrating a base chip key from a first computer system to a second computer system, wherein said first computer system includes a base chip key 1 , and said second computer system includes a base chip key 2 , said method comprising: generating a second certificate for said base chip key 1 by a manufacturer of said second computer system using a first certificate for said base chip key 1 , and generating a second certificate for said base chip key 2 by a manufacturer of said first computer system using a first certificate for said base chip key 2 ; sending a first data packet from said first computer system to said second computer system, wherein said first data packet includes all data necessary to reproduce said base chip key 1 in said second computer system; sending a second data packet from said second computer system to said first computer system acknowledging the receipt of a copy of said base chip key 1 ; erasing said base chip key 1 from said first computer system; and replacing said base chip key 2 in said second computer system with said base chip key 1 .