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Oracle separation methods are used in cryptography to rule out black-box reductions between cryptographic primitives. It is sufficient to find an oracle relative to which the base primitive exists but there are no secure instances of the constructed primitive. In practice, it is beyond our current reach to construct a fixed oracle with such properties for most of the reductions because it is difficult...
Secure set-intersection computation is one of the important problems in secure multiparty computation. We propose a general protocol construction for secure 2-party set-intersection computation based-on the anonymous IBE scheme and its user private-keys blind generation techniques. Compared with related works, this construction is provably GUC (generalized universally composable) secure in standard...
Private inference control enables simultaneous enforcement of inference control and protection of users’ query privacy. Private inference control is a useful tool for database applications, especially when users are increasingly concerned about individual privacy nowadays. However, protection of query privacy on top of inference control is a double-edged sword: without letting the database server...
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