Construction and message forwarding method of anonymous communication network based on ring architecture

The invention discloses a construction method and a message forwarding method of an anonymous communication network based on ring architecture. The message forwarding method comprises the steps of: selecting one node in a Routing ring in the anonymous communication network as a stage path head node; encrypting a stage path parameter, to-be-forwarded message content and next-stage routing information by using a public key of the node, and sending the encrypted information to a stage path head node; and decrypting the received information by using the private key by means of the stage path headnode, determining a forwarding node in a Routing ring, and hierarchically encrypting the decrypted information by using a symmetric key shared with each forwarding node, transmitting the hierarchically encrypted information through each forwarding node, and forwarding the message content to the outside of the ring by the last forwarding node according to decrypted next-stage routing information. By applying the constructi