DIGITAL CONTENT DISTRIBUTION SYSTEM

摘要

A method of generating cryptographically protected digital data encoding content and arranged intomessages each message being decodable by a decoder application on a client terminal having a service interface to assemble each message for the decoder application, includes:retrieving a message from a machine-readable medium; encrypting at least part of the message; andproviding the encrypted messages as output in a format enabling a server service interface to arrange the message into at least one packet including at least one header and a payload, each payload including at least part of the message, at least one header including information enablingthe service interface on the client to assemble each message for the decoder application from thepayload of the packets. The method comprises separating each message into a first and at least one further message section. At least one of the message sections is encrypted in such a way asto be decryptable independently of the other message sections. The encrypted message is assembled by adding a resynchronisation marker, separating a message section from an adjacentmessage section and including explicit synchronisation information, to at least the further messagesections.