摘要
构造具有同态性质的基于身份的加密方案是当下同态密码领域研究的热点之一。本文采用了高效的陷门生成算法,并结合前像可采样陷门单向函数,构造了一个基于LWE问题的全同态IBE方案,相比现有方案效率更高。
引文
[1]Gentry C,Sahai A,Waters B.Homomorphic Encryption from Learning with Errors:Conceptually-Simpler,Asymptotically-Faster,Attribute-Based[M]//Advances in Cryptology-CRYPTO 2013.Springer Berlin Heidelberg,2013:75-92.
[2]Micciancio D,Peikert C.Trapdoors for Lattices:Simpler,Tighter,Faster,Smaller[C]//Euro Crypt.2012,7237:700-718.
[3]Agrawal S,Dan B,Boyen X.Lattice Basis Delegation in Fixed Dimension and Shorter-Ciphertext Hierarchical IBE[C]//Advances in Cryptology-CRYPTO 2010,DBLP,2010:98-115.