Identity-based Multi-receiver Signcryption Scheme Based on SM9
With the rapid development of the Internet of Things,identity-based multi-receiver signcryption schemes have broad application prospects.In one-to-many instant messaging scenarios,the confidentiality,in-tegrity,and authentication of the message can be achieved by using the schemes at lower costs.Due to intensified competition among major powers,China attaches greater importance to the importance of data security in national sovereignty,security,and development interests,and focuses on independent and controllable security technolo-gy.Based on Chinese cryptography industry standard SM9,an identity-based multi-receiver signcryption scheme is proposed,which integrates the public key encryption algorithm and digital signature algorithm in the SM9.Under the random oracle model,the newly proposed signcryption scheme has been proven to achieve selec-tive ciphertext security and unforgeability.Comparative analysis shows that the new signcryption scheme is not on-ly autonomous,controllable,and practical,but also has excellent computational performance,and has good ap-plicability in intelligent vehicle networking.