Draft S/MIME - CMS Symmetric Key Management and Distribution
This document describes a mechanism to manage (i.e., setup,
distribute, and rekey) keys used with symmetric cryptographic
algorithms. Also defined herein is a mechanism to organize users into
groups to support distribution of encrypted content using symmetric
cryptographic algorithms. The mechanism uses the Cryptographic
Message Syntax (CMS) protocol [CMS] and Certificate Management
Message over CMS (CMC) protocol [CMC] to manage the symmetric keys.
Any member of the group can then later use this distributed shared
key to decrypt other CMS encrypted objects with the symmetric key.