使用python实现简单的序列密码

使用python 实现简单的序列密码

#!/usrs/bin/env pythonprint '\nStream Ciphers:\n'before = 'One apple a day, keeps the doctor away!'after = ""i = 1for each in before:    after += chr(ord(each)^(63+i))    if i == 4:        i = 1print 'before: ',before,'\n'print 'after: ',after,'\n'revert = ""i = 1for each in after:    revert += chr(ord(each)^(63+i))    if i == 4:        i = 1print 'revert: ',revert,'\n'