我正在用Python编写一个简单的密码程序(Python新手,甚至更新的加密版),用户帐户和密码在字典中保存到文件中。我正在使用Fernet模块加密密码。添加用户工作正常,但是当我尝试解密密码时,我得到 cryptography.fernet.InvalidToken 错误,所以问题应该是密钥,虽然我看不出我是什么这里做错了。
代码段:
def generate_master_key():
my_key_file = "/path/to/passwordfile"
if os.path.exists(my_key_file):
with open(my_key_file, 'rb') as myfile:
master_key = myfile.read()
else:
master_key = Fernet.generate_key()
with open(my_key_file, 'wb') as myfile:
myfile.write(master_key)
return master_key
del master_key
PASSWORDS = json.load(open('accounts'))
key = generate_master_key()
cipher_suite = Fernet(key)
def encrypt(s):
return cipher_suite.encrypt(base64.encodestring(bytes(s, encoding="ascii")))
def decrypt(token):
return cipher_suite.decrypt(base64.encodestring(bytes(token, encoding="ascii")))
def add_user():
print('What is the name of the account you would like to add?')
account = input()
print('What is the password of {}?'.format(account))
pw = getpass.getpass()
PASSWORDS[account] = encrypt(pw).decode('ascii')
json.dump(PASSWORDS, open('accounts', 'w'))
def get_password():
account = sys.argv[1]
if account in PASSWORDS:
pyperclip.copy(decrypt(PASSWORDS[account]))
print('Password for {} copied to clipboard'.format(account))
else:
print('There is no account named {}'.format(account))
答案 0 :(得分:0)
如果我的理解是正确的,那么您将向解密方法传递加密文本的编码值,该值不是要解密的有效令牌。
由于您将编码值传递给crypt,因此解密应该类似于
def decrypt(token):
return base64.decode(cipher_suite.decrypt(token, encoding="ascii")