On the Composability of Statistically Secure Random Oblivious Transfer

On the Composability of Statistically Secure Random Oblivious Transfer

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We show that random oblivious transfer protocols that are statistically secure according to a definition based on a list of information-theoretical properties are also statistically universally Ship Model composable.That is, they are simulatable secure with an unlimited adversary, an unlimited simulator, and an unlimited environment machine.Our result implies that several previous oblivious transfer protocols in the literature that were proven secure under weaker, non-composable definitions of security Heart Rate Receiver can actually be used in arbitrary statistically secure applications without lowering the security.