摘要
全同态加密在云计算的数据和隐私安全领域有重要应用,但现有全同态加密体制普遍存在密钥、密文尺寸偏大的弊端,严重制约其实用性。为此,以环上容错学习问题为基础,提出环上重编码体制与基于属性加密体制,并与全同态加密体制结合,构造基于属性的全同态加密体制,该体制无需公钥证书,可实现对加密数据细粒度访问控制,与已有同类成果相比,大大缩短了密钥与密文尺寸。
The fully homomorphic encryption has important applications in the area of data security and privacy security of cloud computing, but the size of secret keys and ciphertext in most of current homomorphic encryption schemes were too large, which restricted its practical. To improve these drawbacks, a recoding scheme and a attribute-based encryption scheme based on learning with errors problem over rings were provided, then a attribute-based fully homomorphic encryption was constructed. The new scheme overcame the above mentioned drawbacks, because it did＇t need public key certificate, meanwhile, it can achieve the fine-grained access control to the ciphertext. Compared with similar results, proposed method decreases the size of keys and ciphertext greatly.
作者
郑永辉
康元基
顾纯祥
董辉
ZHENG Yong-hui KANG Yuan-ji GU Chun-xiang DONG Hui(Information Engineering University, Zhengzhou 450002, China State Key Laboratory of Mathematical Engineering and Advanced Computing, Wuxi 214125, China 66136 Troop ofPLA, Beijing 100043, China)
出处
《通信学报》
EI
CSCD
北大核心
2017年第4期55-63,共9页
Journal on Communications
基金
河南省科技创新杰出青年基金资助项目(No.134100510002)
河南省基础与前沿技术研究基金资助项目(No.142300410002)
数学工程与先进计算国家重点实验室开放基金资助项目~~
关键词
RLWE问题
重编码
基于属性加密
全同态加密
RLWE problem
recode
attribute-based encryption
fully homomorphic encryption
