Design of security transmission system for the internet

Due to the imperfect situation of Embedded network equipment security mechanism, the paper designs a security transmission system for the Internet, and proposes a security transmission protocol for the embedded network equipment. In order to improve the system performance, the paper designs a double-core architecture based on the NiosII processor, and accelerates the time consuming logic performance for crypto-operation by the way of definition instruction. System prototype was verification on FPGA. Results show that the processing rate of the security transmission system network packet is more than 10Mbps, which meets the application requirement of connecting safely between the embedded network equipment and the Internet.