GSR: Geographic Secured Routing using SHA-3 algorithm for node and message authentication in wireless sensor networks

Secured Two Phase geographic Greedy Forwarding (SecuTPGF) is a greedy geographic forwarding protocol. It is used for transmitting multimedia data streams in wireless multimedia sensor networks (WMSNs). For a secure and reliable multimedia transmission, cryptography and user defined message authentication code (MAC) mechanisms are used in SecuTPGF. SecuTPGF uses two different algorithms for node and message authentication that incur high computation overhead. To address this issue, this paper proposes a modified version of SecuTPGF called Geographic Secured Routing (GSR). Unlike SecuTPGF, GSR provides security using both node and message authentication with low computation power. Further, GSR uses the standard SHA-3 algorithm for authentication rather than user-defined authentication methods. The effectiveness of the GSR algorithm is confirmed via security analysis and simulation evaluation.