...
首页> 外文期刊>International journal of communication systems >Efficient revocable ID-based encryption with cloud revocation server
【24h】

Efficient revocable ID-based encryption with cloud revocation server

机译:使用云吊销服务器进行有效的基于ID的可撤销的加密

获取原文
获取原文并翻译 | 示例
           

摘要

The capability to efficiently revoke compromised/misbehaving users is important in identity-based encryption (IBE) applications, as it is not a matter of if but of when that one or more users are compromised. Existing solutions generally require a trusted third party to update the private keys of nonrevoked users periodically, which impact on scalability and result in high computation and communication overheads at the key generation center. Li et al proposed a revocable IBE scheme, which outsources most of the computation and communication overheads to a Key Update Cloud Service Provider (KU-CSP). However, their scheme is lack of scalability since the KU-CSP must maintain a secret value for each user. Tseng et al proposed another revocable IBE scheme with a cloud revocation authority, seeking to provide scalability and improve both performance and security level. In this paper, we present a new revocable IBE scheme with a cloud revocation server (CRS). The CRS holds only one secret time update key for all users, which provides the capability to scale our scheme. We demonstrate that our scheme is secure against adaptive-ID and chosen ciphertext attacks under the k-CAA assumption and outperforms both schemes mentioned above, in terms of having lower computation and communication overheads.
机译:在基于身份的加密(IBE)应用程序中,有效撤消受到感染/行为不当的用户的能力很重要,因为这不是一个或多个用户受到损害的时间,而是何时。现有的解决方案通常需要受信任的第三方来定期更新未撤销用户的私钥,这会影响可伸缩性,并导致密钥生成中心的计算和通信开销较高。 Li等人提出了可撤销的IBE方案,该方案将大多数计算和通信开销外包给密钥更新云服务提供商(KU-CSP)。但是,由于KU-CSP必须为每个用户维护一个秘密值,因此它们的方案缺乏可伸缩性。 Tseng等人提出了另一种具有云吊销权限的可撤销IBE方案,旨在提供可伸缩性并提高性能和安全级别。在本文中,我们提出了一种新的具有云吊销服务器(CRS)的可撤销IBE方案。 CRS仅为所有用户持有一个秘密时间更新密钥,这提供了扩展我们的方案的能力。我们证明了我们的方案在k-CAA假设下针对自适应ID和选择的密文攻击是安全的,并且在较低的计算和通信开销方面优于上述两种方案。

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