A New Variant of the Cramer-Shoup Leakage-Resilient Public Key Encryption
A New Variant of the Cramer-Shoup Leakage-Resilient Public Key Encryption
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DOI：
10.1109/incos.2012.64
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
Sujuan Li;Futai Zhang;Yinxia Sun;Limin Shen
中科院分区：
文献类型：
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作者：
Sujuan Li;Futai Zhang;Yinxia Sun;Limin Shen
我们提出了一个新的变体的Cramer-Shoup泄漏弹性公钥加密。该方案比原Cramer-Shoup抗泄漏公钥加密方案具有更高的计算效率。它具有较短的（公开/秘密）密钥长度和较高的相对泄漏率。在标准模型下，在判定性Diffie-Hellman假设下，证明了新方案在自适应选择密文攻击下是语义安全的。
We present a new variant of the Cramer-Shoup leakage-resilient public key encryption. The proposed scheme is more computational efficient than the original Cramer-Shoup leakage-resilient public key encryption scheme. It enjoys a shorter (public/secret) key length, and a higher relative leakage ratio. The new scheme is proved semantically secure against adaptive chosen cipher text attack in the standard model under the decisional Diffie-Hellman assumption.