51，Johson D, Menezes A. The elliptic curve digital signature algorithm. Technical Report, CORR 99-31, Canada: Department of Combinatorics and Optimizat ion, University of Waterloo, 1999
62，Menezes A, Van Oorschot P C, Vanstone S. Handbook of Applied Cryptography. Ne w York: CRC Press, 1996. 425～460
