Patent ID: 8542824
Filing Date: 2013-09-24
Classification: H04L

Abstract:
1. A method of processing a S/MIME e-mail message at a first computing device, the S/MIME e-mail message comprising a plurality of e-mail message parts, each of the plurality of e-mail message parts containing one version of a plurality of different versions of a message text, the method comprising: identifying a plurality of different encryption keys; for each of the plurality of e-mail message parts, providing within the S/MIME e-mail message, the encryption key identifiers associated with the plurality of e-mail message parts; wherein at least one of is further provided within the S/MIME e-mail message, arranged by the encryption key identifiers and stored in at least one e-mail message part that is separate from the plurality of e-mail message parts containing the plurality of different versions of the message text.