Python paramiko安装报错
报错:CryptographyDeprecationWarning
代码引用:
import paramiko
client = paramiko.SSHClient()
client.connect(serverIp, port=serverPort, username=serverUser)
报警告如下:
paramiko\ecdsakey.py:164: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
self.ecdsa_curve.curve_class(), pointinfo
paramiko\kex_ecdh_nist.py:39: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
m.add_string(self.Q_C.public_numbers().encode_point())
paramiko\kex_ecdh_nist.py:96: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
self.curve, Q_S_bytes
paramiko\kex_ecdh_nist.py:111: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
hm.add_string(self.Q_C.public_numbers().encode_point())
原因
paramiko 2.4.2 依赖 cryptography,而最新的cryptography==2.5里有一些弃用的API。
解决
删掉cryptography 2.5,安装2.4.2,就不会报错了。
pip uninstall cryptography==2.5
pip install cryptography==2.4.2
补充
paramiko的issue #1369提到了这个问题,并已有PR #1379了,尚未合并。
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