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Universal Composability Notion for Functional Encryption Schemes
<span title="2013-06-30">2013</span>
<i title="The Korea Society of Industrial Systems">
<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/lckna3eytzdyfjj3yya2wi5fs4" style="color: black;">Journal of the Korea Industrial Information Systems Research</a>
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We have developed an ideal functionality for security requirement of functional encryption schemes. The functionality is needed when we want to show the security of a functional encryption scheme in universal composable (UC) framework. A functionality was developed to represent ideal respond of a functional encryption scheme against any polynomial time active attacker. We show that UC security notion of functional encryption scheme is as strong as fully secure functional encryption in
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... an indistinguishable game with chosen cipher text attack. The proof used a method that showing for any environment algorithm, it can not distinguish ideal world where the attacker play with ideal functionality and real world where the attacker play a fully secure functional encryption scheme.
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