我如何在python中加密用户输入？ [重复]

Question

此问题已经在这里有了答案：

• Caesar Cipher Function in Python19个答案

我正在尝试用python编写代码来加密用户输入。因此，例如，如果我写“ name”，则输出应为“ obnf”。但是问题在于现在的输出仅为“ o”，因此只有第一个字母通过循环，其余的字母被忽略了。有什么建议么？这是我的代码

userInput = input("write something: ")


letters = iter(["A","B","C","D", "E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","X","Y","Z","0","1","2","3","4","5","6","7","8","9","a","b","c", "d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"])


def Encoding(user_input):
    encrypted_msg = ""
    for i in range(len(user_input)):
        char = user_input[i]
        if char in letters:
            encrypted_msg += next(letters)
    return encrypted_msg

print(Encoding(userInput))

Answer 1

插入器只能被遍历一次，然后耗尽。请使用list。

考虑str.maketrans()和str.translate()进行快速替换。

Answer 2

下面的代码解决了这个问题：

from cryptography.fernet import Fernet


def encoding(user_input, key):
    return Fernet(key).encrypt(bytes(bytearray(user_input, encoding='UTF-8')))


def decoding(encrypted_input, key):
    return Fernet(key).decrypt(encrypted_input).decode("UTF-8")


if __name__ == '__main__':
    userInput = input("write something: ")

    key = Fernet.generate_key()
    encryptedInput = encoding(userInput, key)
    print(encryptedInput)

    decryptedInput = decoding(encryptedInput, key)
    print(decryptedInput)

干杯！