Randomness Leakage in the KEM/DEM Framework
Randomness Leakage in the KEM/DEM Framework
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DOI：
10.1007/978-3-642-24316-5_22
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发表时间：
2011-10
期刊：
影响因子：
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通讯作者：
Hitoshi Namiki;Keisuke Tanaka;Kenji Yasunaga
中科院分区：
文献类型：
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作者：
Hitoshi Namiki;Keisuke Tanaka;Kenji Yasunaga
近年来，有许多研究致力于构造即使某些秘密信息泄漏也是安全的密码原语。在本文中，我们考虑的问题，构造公钥加密方案，是弹性泄漏的随机性使用的加密算法。特别是，我们考虑的情况下，公钥加密方案是从KEM/DEM的框架，和泄漏的随机性在加密算法的KEM和DEM独立发生。为此，我们定义了一个新的安全概念KEM。然后，我们提供了一个通用的建设的公钥加密方案，是弹性的随机性泄漏从任何KEM方案满足这种安全性。同时，我们构造了一个KEM方案，该方案在决策Diffie-Hellman假设下满足安全性。
Recently, there have been many studies on constructing cryptographic primitives that are secure even if some secret information leaks. In this paper, we consider the problem of constructing public-key encryption schemes that are resilient to leaking the randomness used in the encryption algorithm. In particular, we consider the case in which public-key encryption schemes are constructed from the KEM/DEM framework, and the leakage of randomness in the encryption algorithms of KEM and DEM occurs independently. For this purpose, we define a new security notion for KEM. Then we provide a generic construction of a public-key encryption scheme that is resilient to randomness leakage from any KEM scheme satisfying this security. Also we construct a KEM scheme that satisfies the security under the decisional Diffie-Hellman assumption.