摘要： Halevi提出的抗自适应泄漏公钥加密(PKE)方案(TCC 2011会议论文集)只能抵抗选择明文攻击，不能抵抗选择密文攻击(CCA)。为此，利用双加密技术和非交互的零知识证明系统对其进行改进，基于CCA安全的抗自适应泄漏的形式化定义，给出一个新的PKE方案。理论分析结果表明，与原方案相比，新方案具有相同的密钥长度和抗泄漏量，并且安全性更高。
关键词:
自适应泄漏,
公钥加密,
选择密文攻击,
双加密,
非交互零知识证明系统
Abstract: Halevi’s adaptive leakage-resilient Public Key Encryption(PKE) scheme can only resist Chosen-Plaintext-Attack(CPA) but can not resist Chosen-Cipertext-Attack(CCA). This paper uses double encryption and non-interactive zero knowledge proof systems to improve the scheme, and proposes a formal definition on adaptive leakage-resilient against CCA. Based on the definition, an adaptive-resilient PKE against CCA is constructed. Security analysis shows that improved scheme has the same secret key size, and it is more secure.
Key words:
adaptive leakage,
Public Key Encryption(PKE),
Chosen-Ciphertext-Attack(CCA),
double encryption,
non-interactive zero knowledge proof system
中图分类号:
陈浩, 朱艳琴, 罗喜召. 改进的抗自适应泄漏公钥加密方案[J]. 计算机工程, 2012, 38(15): 108-110,113.
CHEN Gao, SHU Yan-Qin, LUO Chi-Shao. Improved Adaptive Leakage-resilient Public Key Encryption Scheme[J]. Computer Engineering, 2012, 38(15): 108-110,113.