CAJ | 학술논문

文章针对实际应用中代理者权限等级不同的情况，结合特权集的思想，提出有特权集的门限代理签名方案，当特权代理者和普通代理者分别达到相应门限值才能共同产生有效的门限代理签名，同时特权代理者和普通代理者之间可以互相监督，防止任意一方滥用代理权限；方案可以抵抗合谋攻击，具有特权集和门限签名的特性，满足不可伪造性和不可否认性；证明了方案的安全性和正确性；分析表明方案的效率和通信量是合理的。
문장침대실제응용중대리자권한등급불동적정황，결합특권집적사상，제출유특권집적문한대리첨명방안，당특권대리자화보통대리자분별체도상응문한치재능공동산생유효적문한대리첨명，동시특권대리자화보통대리자지간가이호상감독，방지임의일방람용대리권한；방안가이저항합모공격，구유특권집화문한첨명적특성，만족불가위조성화불가부인성；증명료방안적안전성화정학성；분석표명방안적효솔화통신량시합리적。
Considering that different agents have different permissions in practical application , and based on the thoughts of privilege subset ,a threshold proxy signature scheme with privileged subset is proposed .Only w hen the privileged agents and general agents reach the appropriate threshold value respectively ,can the effective threshold proxy signature be produced .T he privileged agents and gen-eral agents can also supervise with each other to prevent the abuses of proxy rights of either party . Besides ,the scheme can resist collusion attack and is unforgeable and undeniable with its properties of privilege subset and threshold signature .The correctness and security of the scheme is verified ,and the efficiency and traffic of the scheme is reasonable .