Provably secure cross-domain authentication key agreement protocol based on heterogeneous signcryption scheme
Fushou Tao, Ting Shi, Shijin Li · 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC) · 2020
The heterogeneous signcryption mechanism can not only solve the communication problems between users under different cryptosystems, but also ensure the confidentiality and unforgeability of messages. In this paper, the security analysis of an Authenticated Key Agreement Protocol for Cross-Domain Based on heterogeneous signcryption scheme is firstly carried out. It is pointed out that the authentication phase 1 in this scheme does not satisfy the unforgeability of signcryption ciphertext. In order to enhance security, this paper proposes a new two-way heterogeneous signcryption cross-domain authentication scheme. It is proved that the scheme satisfies the unforgeability under the adaptive selection message attack under the random oracle model. Finally, the efficiency analysis shows that the improved scheme has higher computational efficiency.