CAJ | 학술논문

将无证书签名和签密的概念引入到多代理签名中,构造了一种新的无证书的多代理签密方案.在该方案中,原始签密人授权给一个代理签密组,代理签密组中的所有成员合作代替原始签密人生成多代理签密,避免了私钥生成中心(PKG)伪造任意用户,不需要使用任何公钥证书.整个通信不需要安全信道,从而降低了通信代价.与已有方案比,该方案算法复杂性低、通信效率高,更适合于在实际中应用.
장무증서첨명화첨밀적개념인입도다대리첨명중,구조료일충신적무증서적다대리첨밀방안.재해방안중,원시첨밀인수권급일개대리첨밀조,대리첨밀조중적소유성원합작대체원시첨밀인생성다대리첨밀,피면료사약생성중심(PKG)위조임의용호,불수요사용임하공약증서.정개통신불수요안전신도,종이강저료통신대개.여이유방안비,해방안산법복잡성저、통신효솔고,경괄합우재실제중응용.
By applying the concepts of certificateless signature and signcryption to multi-proxy signature, a new certificateless multi-proxy signcryption scheme is proposed. In the new scheme, the original signcrypter can delegate the proxy signcrypter group, then the multi-proxy signcryption is generated by the cooperation of all the proxy signcrypters on behalf of the original signcrypter, avoiding the private key generator to personate any user, no certificate is required to verify the authenticity of public key, the system doesn' t need a security channel, then the communication cost of the system is decreased. The proposed has lower computation complexity and higher communication efficiency than the existing schemes, so it is more convenient for applications in practice.