A Framework for OPES End to End Data Integrity: Virtual Private Content Networks (VPCN)

摘要

In the IETF, OPES is developing a framework for a 'services engine' in theInternet to communicate with a user agent to deliver content in a formatbased on user preferences and abiding to content owners policies.The document introduces the concept of Virtual Private Content Networks as alayer-7 Virtual Private Network as a vehicle for providing content integrity andtrust model that ensures the delivery of content in a network with distributedintelligence. The VPCN framework represents a trusted closed group of entitiesthat agree to deliver, store/cache, modify or adapt content as specified by therules and polices in the content profile. In a VPCN, the content provider is amember and the owner of the VPCN. Any surrogate or an application gateway that is in the content path must be a member of the VPCN. In a VPCN content isdistributed among members' nodes through the use of Content Tunnels that ensurethe integrity of the transport of content among network nodes.