Weak Oblivious Transfer from Strong One-Way Functions
Weak Oblivious Transfer from Strong One-Way Functions
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DOI：
10.1007/978-3-642-24316-5_5
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发表时间：
2011-10
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影响因子：
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通讯作者：
Keisuke Tanaka;Akihiro Yamada;Kenji Yasunaga
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文献类型：
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作者：
Keisuke Tanaka;Akihiro Yamada;Kenji Yasunaga
我们考虑了来自强单向函数的弱不经意转移(OT)和将Maurer的有界存储模型中的无条件安全协议转换为随机预言模型中的计算安全协议的范例。弱OT对于那些与诚实方有二次资源缺口的对手是安全的。我们证明了在OT协议中，随机预言可以被强单向函数代替。我们利用强单向函数构造了一个实现二次安全性的OT协议。
We consider weak oblivious transfer (OT) from strong one-way functions and the paradigm of transforming unconditionally secure protocols in Maurer’s bounded storage model into computational secure protocols in the random oracle model. Weak OT is secure against adversaries which have a quadratic resource gap to honest parties. We prove that the random oracle can be replaced with strong one-way functions in the OT protocol. We construct an OT protocol achieving quadratic security from strong one-way functions.