Abstract: Techniques for enhancing security in networking environments, whereby a cryptographic node negotiates a set of security parameters (a “security association”) with an end node, on behalf of a routing node (an “edge router”), and then securely distributes the negotiated security parameters to the edge router and/or to other edge routers in the network. The disclosed negotiation techniques allow the end node to physically move during the negotiation, yet still establish the security association, and the secure distribution enables the end node to move seamlessly through the network yet continue communicating securely. The disclosed techniques may also be used advantageously in other environments, such as clustered server environments, and allow an end node to communicate with multiple routing or server nodes for a variety of reasons (for example, during a hot-swap to a different server during fail-over or as a result of load balancing).

Abstract: Methods, systems, and computer program instructions for enabling users of pervasive devices to remotely access and manipulate information in ways that might otherwise be impossible or impractical because of inherent limitations of the device. The disclosed techniques enable a wide variety of data manipulation operations to be performed on behalf of the pervasive device, for a wide variety of content types. In preferred embodiments, no modifications or add-ons are required to the pervasive device.