The Ellipse Curve Cryptosystems (ECC)is the most popular public key cryptosystems at present. The Ellipse Digital Signature Algorithm(ECDSA)is the important use of the ELGaml public-key scheme based on ellipse curves.

• 椭圆曲线密码(ECC)是目前最流行的公钥密码体制,而椭圆曲线数字签名(ECDSA)是ELGamal公钥签名体制在椭圆曲线密码体制中的重要应用。