Good morning, Sorry the inconveniences.
I write because obtained the next exception and I don´t know found solution. The same code works perfectly with python 3.7 and cryptography 2.4.4 but I don´t use python > 3.5 because I need execute my code in a Windows XP. I make different test: 1. python 3.4.4 + crytpgraphy=2.4.2 2. python 3.4.4 + crytpgraphy=2.5 3. python 2.7.9, but I tried install cryptography==2.9 obtained more errors. Please can you help me? Regards, 1. **************************************************************** Unknown exception: Raw Traceback (most recent call last): File "C:\Python34\lib\site-packages\paramiko\transport.py", line 2083, in run self._handler_table[ptype](self, m) File "C:\Python34\lib\site-packages\paramiko\transport.py", line 2199, in _negotiate_keys self.kex_engine.start_kex() File "C:\Python34\lib\site-packages\paramiko\kex_curve25519.py", line 54, in start_kex serialization.Encoding.Raw, serialization.PublicFormat.Raw File "C:\Python34\lib\enum.py", line 255, in __getattr__ raise AttributeError(name) from None AttributeError: Raw Exception: Raw **************************************************************** 2. **************************************************************** Traceback (most recent call last): File "ssh_client_pk2.py", line 3, in <module> import paramiko File "C:\Python34\lib\site-packages\paramiko\__init__.py", line 22, in <module> from paramiko.transport import SecurityOptions, Transport File "C:\Python34\lib\site-packages\paramiko\transport.py", line 129, in <module> class Transport(threading.Thread, ClosingContextManager): File "C:\Python34\lib\site-packages\paramiko\transport.py", line 190, in Transport if KexCurve25519.is_available(): File "C:\Python34\lib\site-packages\paramiko\kex_curve25519.py", line 30, in i s_available X25519PrivateKey.generate() File "C:\Python34\lib\site-packages\cryptography\hazmat\primitives\asymmetric\x25519.py", line 38, in generate **************************************************************** 3. **************************************************************** Traceback (most recent call last): File "xx.py", line 3, in <module> import paramiko File "C:\Python34\lib\site-packages\paramiko\__init__.py", line 22, in <module> from paramiko.transport import SecurityOptions, Transport File "C:\Python34\lib\site-packages\paramiko\transport.py", line 129, in <module> class Transport(threading.Thread, ClosingContextManager): File "C:\Python34\lib\site-packages\paramiko\transport.py", line 190, in Transport if KexCurve25519.is_available(): File "C:\Python34\lib\site-packages\paramiko\kex_curve25519.py", line 30, in is_available X25519PrivateKey.generate() File "C:\Python34\lib\site-packages\cryptography\hazmat\primitives\asymmetric\x25519.py", line 38, in generate from cryptography.hazmat.backends.openssl.backend import backend File "C:\Python34\lib\site-packages\cryptography\hazmat\backends\openssl\__init__.py", line 7, in <module> from cryptography.hazmat.backends.openssl.backend import backend File "C:\Python34\lib\site-packages\cryptography\hazmat\backends\openssl\backend.py", line 71, in <module> from cryptography.hazmat.bindings.openssl import binding File "C:\Python34\lib\site-packages\cryptography\hazmat\bindings\openssl\binding.py", line 15, in <module> from cryptography.hazmat.bindings._openssl import ffi, lib ImportError: DLL load failed: No se puede encontrar el módulo especificado. **************************************************************** Best Regards,
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