United States Postal Service

Entrust Corporation

Isadore Schoen

Jon L Cook

Leo J Campbell

Charles R Chamberlain

Michael J McGrath

Michael Boberski

Michael J Mcgrath

Systems and methods are disclosed for authenticating electronic messages. A data structure is generated by a computer server which allows for the authentication of the contents and computer server identity of a received electronic message and provides a trusted stamp to authenticate when the message was sent. Data which can authenticate the message, the computer server identity, and the time the message was sent is included into a data structure which is called an Electronic PostMark (EPM).

Systems and methods for authenticating an electronic message

A method and apparatus for facilitating instant messaging utilizes a secure instant message group policy certificate issued by an instant messaging public key infrastructure policy certificate issuing unit. The secure instant messaging group policy certificate is received, such as through a local instant messaging secure public key infrastructure proxy, and contains data defining the group members, references to other groups, security controls and relevant data such as allowed algorithms. The secure instant messaging group policy certificate defines a plurality of different instant messaging groups, each identified by an instant messaging group identifier. Each instant messaging group identifier is associated with a plurality of instant message group number identifiers.

Secure instant messaging system using instant messaging group policy certificates

Growing community of inventors

Burke, VA, United States of America

Isadore Schoen