CAJ | 학술논문

构造了一个安全的混淆器来实现对特殊的加密的环签名功能的混淆。这个特殊的加密的环签名功能是由waters的环签名方案和线性加密方案组合实现的。在标准模型下，构造的混淆器满足有关联预言的平均情况虚拟黑盒性质（ACVBP w.r.t. dependent oracles）。有了这个性质，即使敌手在获得混淆后的具有加密的环签名功能程序，环签名依然是匿名的和不可伪造的。
구조료일개안전적혼효기래실현대특수적가밀적배첨명공능적혼효。저개특수적가밀적배첨명공능시유waters적배첨명방안화선성가밀방안조합실현적。재표준모형하，구조적혼효기만족유관련예언적평균정황허의흑합성질（ACVBP w.r.t. dependent oracles）。유료저개성질，즉사활수재획득혼효후적구유가밀적배첨명공능정서，배첨명의연시닉명적화불가위조적。
A concrete implementation of a secure obfuscator for a special encrypted ring signature (ERS)functionality is constructed.This ERS functionality is the sequential composition of Waters’s ring signature scheme and linear encryption scheme.In the standard model,the proposed obfuscator satisfies average-case virtual black-box property (ACVBP),which guarantees the preservation of the anonymity and unforgeability of the ring signature even if an obfuscated program is given to the adversaries.