A Lightweight and Secure Anonymous User Authentication Protocol for Wireless Body Area Networks

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Notations</td><td class="align_center">Execution time for various operations</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Th</td><td class="align_center">One-way hash function H (·) or h (·)</td></tr><tr><td class="align_left">Tpair</td><td class="align_center">Bilinear pairing computation</td></tr><tr><td class="align_left">Tadd</td><td class="align_center">Addition operation of points in ECC</td></tr><tr><td class="align_left">Texp</td><td class="align_center">Exponential operation</td></tr><tr><td class="align_left">Tmul</td><td class="align_center">Scalar multiplication of elliptic curve</td></tr><tr><td class="align_left">Ten</td><td class="align_center">Symmetric encryption algorithm AES (128-bit key)</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Execution time of the related pairing-based operations.</div>

Security and Communication Networks

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Table 3

Table 3: A Lightweight and Secure Anonymous User Authentication Protocol for Wireless Body Area Networks 