Platform Based SoC Design Study Of Elliptic Curve Cryptography

Public key cryptography system is an important branch in informationsecurity field. It's being more and more extensively applied in many areasdue to increasing demands on information security. Elliptic CurveCryptography (ECC) provides the highest security strength per bit than anyother currently exiting public key cryptosystems. It is a great challenge toimplement ECC because its high complexity, especially the ECC over GF(p).After extensive research on the ECC algorithm and SoC architecture, asoftware-hardware co-design methodology on ECC implementation isproposed in this thesis, which can archive both high-speed and flexibility.The corresponding SoC architecture, which adopts C*CORE as the processorcore, is developed and the new ECC chip over GF(p) is successfully designedby the Platform-Based design methodology. In the chip designing, the modular operation modules are appropriatelyoptimized according to the SoC internal bus architecture. An improved DMAdata transfer structure is employed to meet high-speed data transfer inside thechip. Through deep analysis to C*CORE and SoC, the ECC-SoC chip possessboth high performance and good extendibility.The chip is designed by using SMIC 0.18μm 1P6M CMOS technology. Itscales 350K equivalent gates with die area of 7.9 mm2, packaged in ceramicPGA 132, and is powered by 3.3V/1.8V dual voltage. The testing resultshows that our chip can perform modular arithmetics, point-add, point-doubleand scalar multiplication operations on ECC over GF(p) with the length of pfrom 192 bit to 256 bit. The chip can carry out 250 times scalar multiplicationper second, and its average dynamic power consumption is 15.42mW at theworking frequency of 100MHz.