Attribute-Based Encryption for Circuits on Lattices

摘要：

　　In the previous construction of attributed-based encryption for circuits on lattices,the secret key size was exponential to the number of AND gates of the circuit,therefore,it was suitable for the shallow circuits whose depth is bounded.For decreasing the key size of previous scheme,combining the techniques of two-to-one recoding (TOR) and sampling on lattices,we proposes a new key-policy attribute-based encryption (KP-ABE) scheme for circuits of any arbitrary polynomial on lattices,and proves that the scheme is secure against chosen plaintext attack in the selective model under the learning with errors (LWE) assumptions.In our scheme,the key size is proportional to the number of gates or wires in the circuits.

关键词： attribute-based encryption lattice learning with errors (LWE) circuits

会议类型: 国内会议

会议名称: 第八届中国可信计算与信息安全学术会议

会议地点: 湖北恩施

会议语种:英文

页码: 1-7

在线出版日期: 2014-09-13（万方平台首次上网日期，不代表论文的发表时间）