CAJ | 학술논문

针对云计算隐私安全保护，提出了一种基于数据分割的CP-ABE （密文策略的基于属性的加密方案）隐私保护方案，克服了云环境下不可信第三方、安全性和性能开销的三大难题。本方案利用数据分割思想将数据分为大数据块和小数据块，通过分割策略对大数据块再进行分块，并用CP-ABE 算法对小数据块进行加密。经理论分析及实验仿真表明，在云环境下，此方案在安全问题、开销问题及扩展问题上都有很大优势。
침대운계산은사안전보호，제출료일충기우수거분할적CP-ABE （밀문책략적기우속성적가밀방안）은사보호방안，극복료운배경하불가신제삼방、안전성화성능개소적삼대난제。본방안이용수거분할사상장수거분위대수거괴화소수거괴，통과분할책략대대수거괴재진행분괴，병용CP-ABE 산법대소수거괴진행가밀。경이론분석급실험방진표명，재운배경하，차방안재안전문제、개소문제급확전문제상도유흔대우세。
According to cloud computing privacy protection,this paper proposed a CP-ABE (cipertext policy-attribute based encryption)scheme based on data partition which improved security,it reduced the performance overhead,overcome untrustful three sides.This scheme used the data ideological to divide date into big and small block of data,then divided the big data block into small pieces and encrypting the small data block with CP-ABE algorithms.Manager deals with experimental analy-sis,in a cloud environment,this scheme has advantages on the safety and performance overhead and extension.