Achieve network security password with mathematics
Abstract
At present, computer network communications from network security issues of common concern to the people, as one of network security based on the theory of cryptography has aroused a great deal of concern, attracting more and more researchers into the field Password the study.
The main research topics is through the use of cryptography to learn basic knowledge of mathematics to understand the mathematics in the application of cryptographic techniques in the realization of the principle and method, commonly used in traditional encryption methods, data encryption standard (DES), Advanced Public Key encryption algorithm (RSA) such as the principle of technology and implementation are described. Paper introduces the basic knowledge of network security and basic knowledge of cryptography, because they are a strong background in mathematics is to study network information security an important means of cryptographic techniques and approaches; followed by the traditional focus on the encryption algorithm, Data Encryption Standard and RSA algorithms，MATLAB language can be used to carry out some simple realization of the encryption and decryption，at the end of the application of network security in today's encryption technology development.

Key Words: Cryptography; encryption and decryption technology; DES; RSA