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• In this paper, we construct the first certificateless ring signcryption for multi-source network coding (MSNC CLRSC) , which is a secure and efficient scheme. In MSNC CLRSC, the private key is used to sign the message vector; and the signed message vector is transmitted to the receiving nodes that can combine and verify the signcrypted ciphertext without the private key of actual signcrypter; furtherly, the receiving nodes filter out the polluted information. MSNC CLRSC has broad application prospects in 5G wireless network, UAV wireless communication network, wireless ad hoc network and wireless sensor network. Network coding can make the intermediate nodes encode the messages, and it has the merits of large network throughput, high resource utilization rate and strong system robustness. Traditional certificateless ring signcryption cannot be used in the network coding environment, so we construct one certificateless ring signcryption for multi-source network coding (MSNC CLRSC), in which actual signcrypter can anonymously signcrypt a message on behalf of a group of users including himself. MSNC CLRSC is provably confidential and unforgeable under the hardness of the co-decisional bilinear Diffie-Hellman and co-computational Diffie-Hellman problems in the random oracle model; moreover, it can resist the pollution attacks and has relatively low computation complexity. [ABSTRACT FROM AUTHOR]