An encrypted request for peer-to-peer communication includes a requesting peer encrypting a requested peer identification using a public key of a security agent. The requesting peer sends the encrypted request to a security agent, which generates a first encrypted instance of the session key using a...http://www.google.com.tw/patents/US8086847?utm_source=gb-gplus-share專利 US8086847 - Computer program product and computer system for peer-to-peer communications
