Hybrid encryption secure communication method based on Blom key distribution algorithm

The invention discloses a hybrid encryption secure communication method based on a Blom key distribution algorithm, which is characterized by comprising the following steps: a certificate generation stage: configuring a master node for all common nodes in a communication network, and applying certificates for all the common nodes and the master node to obtain a private key and a public key; in the key distribution stage, the master node generates and distributes the Blom information containing public matrix information, private matrix information and node information as a key to the common nodes based on a Blom key distribution algorithm; in the secure communication stage, when communication is carried out between the common nodes, communication is carried out based on a symmetric key generated by the public matrix information and the private matrix information obtained from the Blom information. The problems that the overhead of symmetric key exchange is large, the network expansibility is insufficient, the