首页> 外文会议>Information and Communications Security >Practical t-out-n Oblivious Transfer and Its Applications
【24h】

Practical t-out-n Oblivious Transfer and Its Applications

机译:实用的t-out-n遗忘转移及其应用

获取原文

摘要

General constructions of t-out-n (string) oblivious transfers and millionaire protocol are presented using two-lock crypto-system, which enables Alice to send Bob secret without shared key. In the proposed t-out-n (string) oblivious transfer, Alice cannot determine which t messages Bob received even if she has unlimited computational power while Bob cannot learn the other n - t messages if the discrete logarithm problem is infeasible. The scheme requires constant rounds. Alice needs n + t modular exponentiations and Bob needs 2t modular exponentiations. Furthermore, the basic scheme is improved to meet public verifiability and extended to distributed oblivious transfers. As applications, efficient PIR scheme and millionaire protocol are built.
机译:使用两锁密码系统介绍了t-out-n(字符串)遗忘传输和百万富翁协议的一般结构,该系统使Alice可以在没有共享密钥的情况下发送Bob秘密。在提议的t-out-n(字符串)遗忘传输中,即使离散对数问题不可行,即使Alice有无限的计算能力,Alice也无法确定Bob收到了哪些t消息,而Bob却无法学习其他n-t消息。该计划需要不断进行。爱丽丝需要n + t模幂,鲍勃需要2t模幂。此外,改进了基本方案以满足公众的可验证性,并将其扩展到分布式遗忘转移。作为应用,构建了有效的PIR方案和百万富翁协议。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号