【发布时间】:2016-02-07 14:44:16
【问题描述】:
我正在编写一个 vigenere 密码,并想添加另一个密钥。这进一步加密了我输入的文本。谁能解释如何做到这一点?
LETTERS = 'ZABCDEFGHIJKLMNOPQRSTUVWXY'
def main():
myMode = input("Encrypt 'e' or Decrypt 'd': ")
myMessage = input('What text would you like to encrypt: ')
myKey = input('Enter your key: ')
myKey2 = input('Enter your second key: ')
if myMode == 'encrypt' or myMode == 'e':
translated = encryptMessage(myKey, myMessage)
elif myMode == 'decrypt' or myMode == 'd':
translated = decryptMessage(myKey, myMessage)
print('%sYour Message: ' % (myMode.title()))
print(translated)
print()
def encryptMessage(key, message):
return translateMessage(key, message, 'encrypt')
def decryptMessage(key, message):
return translateMessage(key, message, 'decrypt')
def translateMessage(key, message, mode):
translated = []
keyIndex = 0
key = key.upper())
for symbol in message:
num =LETTERS .find(symbol.upper())
if num != -1:
if mode == 'encrypt':
num += LETTERS .find(key[keyIndex])
elif mode == 'decrypt':
num -= LETTERS .find(key[keyIndex])
num %= len(LETTERS)
if symbol.isupper():
translated.append(LETTERS[num])
elif symbol.islower():
translated.append(LETTERS[num].lower())
keyIndex += 1
if keyIndex == len(key):
keyIndex = 0
else:
translated.append(symbol)
return ''.join(translated)
if __name__ == '__main__':
main()
我已经创建了变量,但不确定在哪里使用它们。任何帮助都会很棒。
【问题讨论】:
标签: python encryption vigenere