Patent ID: 7188358
Filing Date: 2007-03-06
Classification: H04L

Abstract:
1. A method of email access control, comprising the steps of: receiving a personalized access ticket containing a sender's identification and a recipient's identification in correspondence and a sender's identification presented by a sender from the sender who wishes to send an email to a recipient so as to specify the recipient as an intended destination of the email, the personalized access ticket further containing a validity period indicating a period for which the personalized access ticket is valid, at a secure communication service for connecting communications between the sender and the recipient; controlling accesses between the sender and the recipient by verifying an access right of the sender with respect to the recipient according to the personalized access ticket at the secure communication service; checking whether the sender's identification presented by the sender is contained as the sender's identification in the personalized access ticket presented by the sender, and refusing delivery of the email when the sender's identification presented by the sender is not contained in the personalized access ticket presented by the sender; and checking the validity period contained in the personalized access ticket presented by the sender, and refusing delivery of the email when the validity period has expired.