Security and privacy-enhancing techniques are developed in order to provide strong protection over the Internet. These techniques aim to enable the users to keep their identities secret during the communication when they are forwarding an email, making payments online, and web browsing or posting to newsgroups. MixNet is the most practical solution for concealing the identities of messages and senders. The anonymous channel contains numerous routing protocols that consist of anonymous messages forwarding between nodes. The structure of MixNet is also based on this way to achieve anonymity. After the proposed work of Chaumian MixNet, many practical implementations of MixNet using many approaches and techniques are accomplished until now. In this paper, we propose the hybrid MixNet using NTRU asymmetric cryptosystem. We designed a mechanism for anonymous communication in which more people can participate in their secure communication. It hides the relation between input and output in each phase of Mix servers. The performance of Hybrid MixNet using NTRU is better than Hybrid Mixnet using ElGamal and ECC. In our proposed system, Hybrid MixNet using NTRU takes average time 16.4 milliseconds while Hybrid MixNet using ElGamal and ECC take 93.4 milliseconds and 182.2 milliseconds respectively.

开发安全和隐私增强技术是为了在 Internet 上提供强大的保护。这些技术旨在使用户在转发电子邮件、在线支付、网页浏览或发布到新闻组的通信过程中能够保密他们的身份。MixNet 是隐藏消息和发件人身份的最实用的解决方案。匿名通道包含许多路由协议，这些路由协议由节点之间的匿名消息转发组成。MixNet 的结构也是基于这种方式来实现匿名的。在 Chaumian MixNet 提出的工作之后，到目前为止，已经完成了许多使用多种方法和技术的 MixNet 的实际实现。在本文中，我们提出了使用 NTRU 非对称密码系统的混合 MixNet。我们设计了一种匿名通信机制，让更多人可以参与到他们的安全通信中。它隐藏了 Mix 服务器每个阶段的输入和输出之间的关系。使用 NTRU 的 Hybrid MixNet 的性能优于使用 ElGamal 和 ECC 的 Hybrid Mixnet。在我们提出的系统中，使用 NTRU 的混合 MixNet 平均花费 16.4 毫秒，而使用 ElGamal 和 ECC 的混合 MixNet 分别花费 93.4 毫秒和 182.2 毫秒。