CAJ | 학술논문

基于属性的签名近年来由于云计算的大规模应用而备受关注。为了有效保护云计算环境下数据中的敏感信息，该文将可净化的思想引入基于属性的签名中，提出云计算环境下基于属性的可净化签名的方案。该方案中的签名者可以指定净化者对已经签名的文件进行改动，使之隐私部分不再呈现，可以有效解决云端数据中敏感信息隐藏与签名者隐私性的问题。方案在标准模型下证明基于属性的可净化签名方案是不可伪造的。分析表明，所提方案可以解决云计算环境下数据的敏感信息隐藏问题。
기우속성적첨명근년래유우운계산적대규모응용이비수관주。위료유효보호운계산배경하수거중적민감신식，해문장가정화적사상인입기우속성적첨명중，제출운계산배경하기우속성적가정화첨명적방안。해방안중적첨명자가이지정정화자대이경첨명적문건진행개동，사지은사부분불재정현，가이유효해결운단수거중민감신식은장여첨명자은사성적문제。방안재표준모형하증명기우속성적가정화첨명방안시불가위조적。분석표명，소제방안가이해결운계산배경하수거적민감신식은장문제。
Attribute signature attracts much attention due to the large-scale applications of cloud computing. Sensitive information in the document needs to be hidden in cloud computing environment, and Attribute Based Sanitizable Signature (ABSS) scheme in cloud computing environment is proposed to solve this issue. The ABSS scheme brings the character of sanitizable into Attribute Based Signature (ABS) in order to hide sensitive information, ensure signer’s anonymity and achieve fine-grained access control. The ABSS scheme constructed in this paper is proved to be unforged in the standard model. Analysis shows that the proposed ABSS scheme is more appropriate for cloud computing environment to hide the sensitive information of the data.