For Project Enquiry +91 9962 067 067

Secure Network Coding With Erasures

and Feedback

ABSTRACT

In this paper, we develop achievability protocols and outer bounds for the secure network coding setting, where the edges are subject to packet erasures, and public feedback of the channel state is available to both Eve and the legitimate network nodes. Secure network coding assumes that the underlying network channels are error-free; thus, if our channels introduce errors, we need to first apply a channel code to correct them, and then build security on top of the resulting error-free network. We show that by leveraging erasures and feedback, we can achieve secrecy rates that are in some cases multiple times higher than the alternative of separate channel-error-correction followed by secure network coding; moreover, we develop outer bounds and prove optimality of our proposed schemes in some special cases.

EXISTING SYSTEM	PROPOSED SYSTEM
EXISTING CONCEPT:-    In existing, the security issue is main thing for the users. Secure network information transfer is not possible in the existing system. Secure    network coding assumes that the underlying network channels are error-free.	PROPOSED CONCEPT:- In proposed, we are interested in secure network information transfer. Given that we rely on network services for our most security-critical data. A source wants to securely send a message to a set of receivers over a packet network with unit-capacity edges, in the presence of a passive eavesdropper.
EXISTING TECHNIQUE:- Error coding Technique	PROPOSED ALGORITHM:- Key Generation Algorithm
TECHNIQUE DEFINITION:- This technique is used for transfer the messages through the networks. In this error free is not achievable, so the messages are not send through the correct nodes.	ALGORITHM DEFINITION:- secure message transfer over error-free networks, as well as secure message transfer over a single point-to-point erasure network with state feedback. It inserts in the network linear combinations of the message and the random packets.
DRAWBACKS:- Data’s are not secure. Packets sent are always dependent	ADVANTAGES:- Data’s will be highly securable. Packets sent in parallel on different edges are always all independent.