An Efficient and Practical Public Key Cryptosystem with CCA-security on Standard Model

摘要：

　　chosen ciphertext attack (CCA) security on the standard model is widely accepted as the standard security notion for the public key cryptosystem.The existing CCA-secure public key cryptosystems on the standard model are expensive in terms of efficiency and practicality.In this paper,an efficient and practical public key cryptosystem is presented over the group of signed quadratic residues.It is provably secure against CCA on the standard model.Furthermore,publicly verifiability for the scheme is also realized in the way that projects the privacy key into public key on trapdoor pretending.It will be useful to devise efficient CCA-secure threshold and proxy re-encryption schemes on the standard model.

关键词： public key cryptosystem standard model CCA-security public verifiability

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: 1-8

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）