This paper is devoted to the design and the physical security of a parallel dual-core flexible crypto processor for computing pairings over Barreto-Naehrig (BN) curves. The proposed design is specifically optimized for field-programmable gate-array (FPGA) platforms. The design explores the in-built features of an FPGA device for achieving an efficient crypto processor for computing 128- bit secure pairings. The work further pinpoints the vulnerability of those pairing computations against sidechannel attacks and demonstrates experimentally that power consumptions of such devices can be used to attack these ciphers. Finally, we suggest a suitable countermeasure to overcome the respective weaknesses.
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