本文实例讲述了Python实现的维尼吉亚密码算法。分享给大家供大家参考,具体如下:
一 代码
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# -*- coding:utf-8 -*- #key='relations' #plaintext='tomorrowiwillhaveagood' print ( "服务器之家测试结果:" ) key = 'helloworld' plaintext = raw_input ( '请输入明文:' ) ascii = 'abcdefghijklmnopqrstuvwxyz' keylen = len (key) ptlen = len (plaintext) ciphertext = '' i = 0 while i < ptlen: j = i % keylen k = ascii.index(key[j]) m = ascii.index(plaintext[i]) ciphertext + = ascii[(m + k) % 26 ] i + = 1 print (ciphertext) #维吉尼亚加密算法 解密 key = 'helloworld' ciphertext = raw_input ( '请输入密文:' ) ascii = 'abcdefghijklmnopqrstuvwxyz' keylen = len (key) ctlen = len (ciphertext) plaintext = '' i = 0 while i < ctlen: j = i % keylen k = ascii.index(key[j]) m = ascii.index(ciphertext[i]) if m < k: m + = 26 plaintext + = ascii[m - k] i + = 1 print (plaintext) |
二 运行结果:
希望本文所述对大家Python程序设计有所帮助。
原文链接:https://blog.csdn.net/chengqiuming/article/details/78601100