验证码的识别与改进

针对因特网安全防范中验证码的普遍使用,讨论了验证码的功能原理、常用的识别方法,选取了部分网站干扰不同的验证码进行了分割、识别实验.结果表明：互联网上有相当多的验证码不能有效地保证系统的安全.提出一种验证码的改进方法,该方法程序简单,产生的新验证码可以提高识别难度和降低破解的准确率,具有一定的推广价值.最后给出了验证码设计的建议.

Recognition and Improvement of Identifying Code

In allusion to the wide use of identifying codes in internet security and identification authentication,the paper discusses the functional principles of identifying codes and commonly used ways of recognizing identifying codes.Segmentation and recognition experiments of identifying codes are made.The experimental results indicated that the existing identifying codes are not effective in ensuring the system security.An improved method is proposed in this paper.Its program is simple and effective,and the newl...