Network security and authentication of sound wave

With the high development of the information technology, data encryption becomes one of the key technologies in network security. An auto authentication of sound wave system can be applied in network security. Applying the symmetric allgorithm and public-key algorithm and speaker recognition technology, a new security method for public-key management is proposed. The symmetric algorithm used in the method is IDEA. The infomation of sound wave is encrypted with public-key algority RSA. Through the authentication of sound wave system the user of network can safely communicate without keeping his