module 'cryptography.hazmat.primitives.ciphers.algorithms' has no attribute 'DES'
时间: 2024-10-11 19:18:12 浏览: 5
抱歉,我在之前的示例中犯了一个错误。在实际的 `cryptography` 库中,DES(Data Encryption Standard)已经不再直接作为算法,而是通过 `ciphers` 模块的 `AES`(Advanced Encryption Standard)来实现,因为DES已经被认为不够安全。如果你想创建一个与 DES 类似的128位加密,你可以选择 AES-128。
这里是修改后的 Python 代码:
```python
from base64 import b64encode
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
from cryptography.hazmat.primitives import hashes, padding
from cryptography.hazmat.backends import default_backend
def encrypt(data, key):
if len(key) != 16: # 更改为16,因为AES-128需要16字节的密钥
print("密钥长度必须为16")
return None
try:
kdf = PBKDF2HMAC(
algorithm=hashes.SHA256(),
length=algorithms.AES.block_size * 8, # AES-128有16字节的块大小
salt=None,
iterations=10000, # 可根据需求调整迭代次数
backend=default_backend()
)
derived_key = kdf.derive(key)
cipher = Cipher(algorithms.AES(derived_key), modes.CBC(), backend=default_backend())
encryptor = cipher.encryptor()
padded_data = padding.PKCS7(algorithms.AES.block_size).padder().update(data) + padding.PKCS7(algorithms.AES.block_size).padder().final()
encrypted_data = encryptor.update(padded_data) + encryptor.final()
encoded_data = b64encode(encrypted_data).decode("utf-8").replace("\n", "")
return encoded_data
except Exception as e:
print(e)
return None
```