Lecture 27 Key Encapsulation Mechanisms KEM

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This lecture introduces KEM, Key Encapsulation Mechanisms, as a weaker alternative to hybrid encryptions with the attained aim of having the asymmptotic efficiency of private key encryption using a public key cryptographic scheme. The security of the induced public key scheme depends on both the security strength of the KEM mechanisms as well as the security strength of the subsequently used private key scheme. All instruction language are in Arabic, however, all formulations, definitions, concepts, equations, etc., are given in 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