06192130 is referenced by 98 patents and cites 8 patents.

A first trusted authority, such as an originating certification authority, that stores key history data, such as private decryption keys for one or more subscribers, includes a key history exportation engine operative to generate a security key history exportation packet. The security key history exportation packet contains at least encrypted security key history data uniquely associated with a subscriber. A second trusted authority, such as a destination certification authority, includes a security key history importation engine operative to decrypt the security key history exportation packet. The retrieved security key history data then is stored and made accessible through the second trust authority for later access by the subscriber. The second trusted authority serves as a new trust anchor instead of the first trust authority.

Title
Information security subscriber trust authority transfer system with private key history transfer
Application Number
9/345234
Publication Number
6192130 (B1)
Application Date
June 30, 1999
Publication Date
February 20, 2001
Inventor
Josanne Otway
Ottawa
US
Agent
Markison & Reckamp P C
US
Assignee
Entrust Technologies
US
IPC
H04L 9/00
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