基于ECC的自认证广义指定验证者签密

Self-certified Universal Designated-Verifier Signcryption Based on Elliptic Curve Cryptosystem

广义指定验证者签名允许签名的持有者指定签名给指定的验证者,但仅有指定的验证者能够验证这个签名,针对该问题,利用椭圆曲线密码体制(ECC)和自认证签密的特点,提出一个基于ECC的自认证广义指定验证者签密。该方案不仅消除了证书存在问题和密钥托管问题,而且具有算法复杂度低、处理速度快、存储空间占用小等特点,适合应用于电子投票、电子拍卖等领域。

Universal designated-verifier signature allows a signature holder to designate the signature to a desire designated-verifier,in such a way only the designated verifier can verify this signature.Using the merits of Elliptic Curve Cryptosystem（ECC） and self-certified signcryption,a new self-certified universal designated-verifier signcryption based on ECC is presented.The scheme eliminates certificate existence problem and key escrow problem.It has low algorithm complexity,quick proceeding speed and little storage space,so it is propitious to applications in E-vote and E-auction.