中文摘要：

身份混合签密能够高效封装对称密钥和安全传输数据。针对现有身份混合签密方案计算复杂度高的问题，集成身份混合签密和椭圆曲线密码学（ECC）中的双线性映射，构造了一种使用ECC的身份混合签密方案。证明了所构造的方案在随机顸言模型下满足co-BDH假设下的保密性扣co-CDH假设下的不可伪造性。由于该方案通信成本低且计算效率高，因而能够更好地满足密码学应用需求。

英文摘要：

Identity-Based hybrid signcryption can efficiently encapsulate symmetric key and securely transmit data. Aiming at high computational complexity problem that exists in the existing identity-based hybrid signcryption schemes, this article integrates identity-based hybrid signcryption and bilinear maps in elliptic curve cryptography （ECC）, and constructs a novel identity-based hybrid signcryption （IBHS） scheme using ECC. In the random oracle model, the paper proves that the constructed scheme satisfies the confidentiality under the co-bilinear Diffie-Hellman assumption and unforgeability under the co-computational Diffie-Hellman assumption. Since this scheme has low communication cost and high computational efficiency, it can be more practical in cryptography.