Existing digital signature schemes are computationally expensive; the ideal approach of signing and verifying each packet independently raises a serious challenge to resource- constrained devices. In order to reduce computation overhead, conventional schemes use efficient signature algorithms and are vulnerable to packet injection by malicious Here, MABS can achieve perfect resilience to packet loss in lossy channels in the sense that no matter how many packets are lost, the already- received packets can still be authenticated by receivers. Basic scheme MABS-B is efficient in terms of latency, computation and communication overhead. An enhanced scheme called MABS-E combines the basic scheme MABS-B and a packet filtering mechanism to tolerate packet injection.

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Multicast authentication signature