关键词: 后量子密码, 基于身份的密码, 基于格的密码, 认证密钥协商, 匿名性

Abstract: As the scale of data in the network becomes more and more enormous. These data are highly associated with the users, once the data is leaked, the identity information and personal privacy of the users will be seriously threatened. The encryption system based on traditional number theory becomes no longer secure with the rapid development of quantum technology, in response to this problem, this paper proposes a key negotiation protocol that gives anonymous authentication on the lattice, based on lattice cryptography security challenges can resist quantum attacks, its security has been analyzed by the security model and theoretical and compared with similar schemes to obtain a significant improvement. This novel protocol is based on the authentication cryptography of lattice ciphers, which is capable of accomplishing mutual authentication and establishing secure communication, and is able to optimize the deployment of certificate system components of public key infrastructure.

Key words: postquantum cryptography, identitybased cryptography, latticebased cryptography, authenticated key agreement, anonymity