Comparison with traditional network routing technology, multi-source network coding allows the routers to encode the received data and has the merits of large throughput, strong robustness and fast speed. In addition, certificateless public key cryptosystem (CL-PKC) is both certificate-free and key escrow-free. From now, there is no certificateless signature suitable for multi-source network coding (MSNC-CLS). In view of its wide application in practice, we construct an MSNC-CLS by applying the technique of certificateless signature to the environments of multi-source network coding. In MSNC-CLS, the use of generation can defend the replay attacks and the homomorphism of hash function can simplify the verification process of intermediate nodes. Generation identifier can make the intermediate nodes judge the generation property of message, thus the intermediate nodes can decide whether they encode the message. Analysis shows MSNC-CLS can resist the pollution and forgery attacks; moreover, it has better computation performance than the existing schemes.

与传统的网络路由技术相比，多源网络编码允许路由器对接收到的数据进行编码，并具有吞吐量大，鲁棒性强和速度快的优点。此外，无证书公共密钥密码系统（CL-PKC）既无证书又无密钥托管。从现在开始，没有适合多源网络编码（MSNC-CLS）的无证书签名。鉴于其在实践中的广泛应用，我们通过将无证书签名技术应用于多源网络编码环境来构建MSNC-CLS。在MSNC-CLS中，使用生成可以防御重放攻击，而哈希函数的同态可以简化中间节点的验证过程。生成标识符可以使中间节点判断消息的生成属性，因此，中间节点可以决定是否对消息进行编码。分析表明，MSNC-CLS可以抵抗污染和伪造攻击。此外，它具有比现有方案更好的计算性能。