Lower rounds lattice-based anonymous AKA under the seCK model for the IoT

The authenticated key agreement (AKA) method used in the Internet of Things (IoT) provides identity authentication and agreed symmetric keys to encrypt large amounts of communication messages for devices and servers. With the rapid development of quantum computers and quantum algorithms, classical cryptographic algorithms become vulnerable to attacks by adversaries, leading to significant risks in IoT communication systems. Numerous lattice-based authentication key agreement (AKA) schemes have emerged to fortify communication systems against quantum attacks. However, due to the large size of the lattice cryptography public key, an excessive number of communication rounds can cause significant time delays. Meanwhile, many current lattice-based AKA schemes rely on weak security models like BR, CK, and ROR. These models can only capture partial adversary attacks. To this end, we propose a lower communication rounds lattice-based anonymous authenticated key agreement (LA-AKA) protocol under the seCK model. This protocol aims to achieve lower communication rounds under the robust security model, ensuring heightened security and efficiency within IoT communication systems.