An ECC crypto engine based on binary edwards elliptic curve for low-cost RFID tag chip

This paper presents a high-performance 163-bit elliptic curve cryptographic (ECC) engine, based on binary Edwards curve, for low-cost radio frequency identification (RFID) tag chips. A security-enhanced ECC processor is designed and implemented in the algorithm level. This paper analyzes and optimizes the Karatsuba-Ofman divide and rule algorithm multiplier in finite field in ECC ALU module and implements the design efficiently in order to meet the power, area and timing requirements of RFID tags. According to the simulation results, the optimized design requires 14,200 equivalent gates area and 23,023 cycles with 0.93 μJ energy consumption for one encryption process.