  In this document we describe the design of a multi-party messaging encryption
protocol "Strongvelope". We hope that it will prove useful to people interested
in understanding the inner workings of this protocol as well as cryptography
and security experts to review the underlying concepts and assumptions.
  In this design paper we are outlining the perspective of chat message
protection through the Strongvelope module. This is different from the product
(the Mega chat) and the transport means which it will be used with. Aspects of
the chat product and transport are only referred to where appropriate, but are
not subject to discussion in this document.
