Along with the computer information and network technology are widely used in people's life and work, information security is becoming more and more important. Especially in latest years, the development of cloud computing technology identifies the arrival of the age of Internet of Things, which means the security of information and network is much more important. In order to protect the security of network data, a high speed chip module for encrypting and decrypting of network data packet is designed. The chip module is oriented for internet information security SOC (System on Chip) design. During the design process, AES (Advanced Encryption Standard) and 3DES (Data Encryption Standard) encryption algorithm are adopted to protect the security of network data.