一、凯撒密码
关于凯撒密码请参考之前的文章，链接如下：
/weixin_52351575/article/details/12074
二、暴力破解凯撒加密
原理是使用密码轮和凯撒加密的本质进行爆破
message = 'oknqdbqmoq{kag_tmhq_xqmdzqp_omqemd_qzodkbfuaz}'SYMBOLS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890 !?.'# Loop through every possible key:循环遍历所有可能的关键字for key in range(len(SYMBOLS)):# It is important to set translated to the blank string so that the将translated定义成空字符很重要，这样可以清除上一个迭代中# previous iteration's value for translated is cleared.translated的值translated = ''# The rest of the program is almost the same as the original program:程序的其余部分与凯撒程序基本相同# Loop through each symbol in `message`:循环遍历message中的每一个字符for symbol in message:if symbol in SYMBOLS:symbolIndex = SYMBOLS.find(symbol)translatedIndex = symbolIndex - key# Handle the wrap-around:执行回环if translatedIndex < 0:translatedIndex = translatedIndex + len(SYMBOLS)# Append the decrypted symbol:添加解密的字符translated = translated + SYMBOLS[translatedIndex]else:# Append the symbol without encrypting/decrypting:添加未解密/加密的字符translated = translated + symbol# Display every possible decryption:显示每一个可能的值print('Key #%s: %s' % (key, translated))
