06134327 is referenced by 86 patents and cites 3 patents.

A method and apparatus for creating communities of trust within a secure communications system is accomplished by allowing end-users to obtain arbitrary lists of trusted public keys from other end-users and from associated authorities. Once an arbitrary list has been obtained by an end-user, the end-user determines whether it was obtained in a manner consistent with a security policy of the secured community. The security policy may enable an end-user to receive trusted public keys from other end-users, from associated authorities only, to receive public keys of associated authorities, other end users, or any combination thereof. When the arbitrary lists of trusted keys are obtained in a manner consistent with the security policy, the end-user adds keys of the arbitrary lists to a trusted key list. When a security-related operation is to be performed (e.g., verifying a signature of a received message or retrieving the encryption public key of a recipient for an outgoing message), any of the trusted keys contained within the trusted list may be used for authentication purposes.

Title
Method and apparatus for creating communities of trust in a secure communication system
Application Number
8/957612
Publication Number
6134327
Application Date
October 24, 1997
Publication Date
October 17, 2000
Inventor
Paul C Van Oorschot
Ottawa
CA
Agent
Markison & Reckamp P C
Assignee
Entrust Technologies
CA
IPC
H04L 9/00
H04L 9/30
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