压缩包内论文只是通过对一个简单的密码体制：仿射密码（Affine Cipher）的分析、设计和实现来说明简单的加密思想，从这个思想我们可以研究更复杂的加密算法。最后，我以软件的形式将其实现，通过测试，发现使用效率还可以；但是，这只是个实验性的设计，要想不被人破译，还需要更复杂的密钥空间和更难的算法。-compressed within the papers only through a simple password system : Affine password (Affine Cipher) the analysis, design and implementation to illustrate the simple encryption thinking, From this thinking we could consider a more complex encryption algorithm. Finally, I software in the form of its realization, testing and found that the efficiency can also use; However, This is only the experimental design, in order not to be deciphered, also need more complex and more difficult to key space algorithm.