Patent ID: 8769260
Filing Date: 2014-07-01
Classification: G06F,H04L

Abstract:
1. A messaging system comprising: a backend system hosting a backend service for maintaining a public key and a private key pair of a first user of a recipient computer; and a sender computer configured to insert an encrypt button on a webpage of a webmail service in response to detecting the webpage being rendered in a web browser displayed on a display monitor of the sender computer, to receive the public key of the first user from the backend system, to retrieve from the webpage a message content of an e-mail addressed to the first user and being composed on the webpage in response to activation of the encrypt button, to encrypt the message content using a symmetric key to generate an encrypted message content, to encrypt the symmetric key using the public key of the first user to generate an encrypted symmetric key, to insert the encrypted message content and the encrypted symmetric key into the e-mail in the webpage, and to send the e-mail to the recipient computer by way of the webmail service.