miniconda3: AttributeError: module ‘cryptography.hazmat.backends’ has no attribute ‘openssl’
- AttributeError: module ‘cryptography.hazmat.backends’ has no attribute ‘openssl’
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- Solution
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AttributeError: module cryptography.hazmat.backends’ has no attribute openssl’
The problem occurred after miniconda3 in the AUR was updated to 23.5.2-1 (before and after the update, I commented out the conda in .bashrc according to the instructions). At that time, after the update, I went to read the AUR comments and found nothing. After two days of system upgrade, the bug was still there. After taking CPR on the third day, I looked at the comment area and found a possible solution
gru: solved it by activating the base conda env and updating with pip pyopenssl and cryptography
However I try conda activate base and get the same error
[mifen@hp ~]$ conda env list
Traceback (most recent call last):
File "/opt/miniconda3/lib/python3.11/site-packages/conda/exception_handler.py", line 16, in __call__
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/cli/main.py", line 70, in main_subshell
p = generate_parser()
^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/cli/conda_argparse.py", line 65, in generate_parser
p = ArgumentParser(
^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/cli/conda_argparse.py", line 152, in __init__
self._subcommands = context.plugin_manager.get_hook_results("subcommands")
^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/base/context.py", line 502, in plugin_manager
from ..plugins.manager import get_plugin_manager
File "/opt/miniconda3/lib/python3.11/site-packages/conda/plugins/__init__.py", line 3, in <module>
from .hookspec import hookimpl # noqa: F401
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/plugins/hookspec.py", line 9, in <module>
from .types import CondaSolver, CondaSubcommand, CondaVirtualPackage
File "/opt/miniconda3/lib/python3.11/site-packages/conda/plugins/types.py", line 7, in <module>
from ..core.solve import Solver
File "/opt/miniconda3/lib/python3.11/site-packages/conda/core/solve.py", line 41, in <module>
from .index import _supplement_index_with_system, get_reduced_index
File "/opt/miniconda3/lib/python3.11/site-packages/conda/core/index.py", line 24, in <module>
from .subdir_data import SubdirData, make_feature_record
File "/opt/miniconda3/lib/python3.11/site-packages/conda/core/subdir_data.py", line 53, in <module>
from ..trust.signature_verification import signature_verification
File "/opt/miniconda3/lib/python3.11/site-packages/conda/trust/signature_verification.py", line 12, in <module>
from conda_content_trust.authentication import verify_delegation, verify_root
File "/opt/miniconda3/lib/python3.11/site-packages/conda_content_trust/authentication.py", line 34, in <module>
from .common import (
File "/opt/miniconda3/lib/python3.11/site-packages/conda_content_trust/common.py", line 66, in <module>
import cryptography.hazmat.backends.openssl.ed25519
File "/opt/miniconda3/lib/python3.11/site-packages/cryptography/hazmat/backends/openssl/__init__.py", line 6, in <module>
from cryptography.hazmat.backends.openssl.backend import backend
File "/opt/miniconda3/lib/python3.11/site-packages/cryptography/hazmat/backends/openssl/backend.py", line 61, in <module>
from cryptography.hazmat.bindings.openssl import binding
File "/opt/miniconda3/lib/python3.11/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 232, in <module>
Binding.init_static_locks()
File "/opt/miniconda3/lib/python3.11/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 206, in init_static_locks
cls._ensure_ffi_initialized()
File "/opt/miniconda3/lib/python3.11/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 195, in _ensure_ffi_initialized
_legacy_provider_error(cls._legacy_provider_loaded)
File "/opt/miniconda3/lib/python3.11/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 104, in _legacy_provider_error
raise RuntimeError(
RuntimeError: OpenSSL 3.0's legacy provider failed to load. This is a fatal error by default, but cryptography supports running without legacy algorithms by setting the environment variable CRYPTOGRAPHY_OPENSSL_NO_LEGACY. If you did not expect this error, you have likely made a mistake with your OpenSSL configuration.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/miniconda3/condabin/conda", line 13, in <module>
sys. exit(main())
^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/cli/main.py", line 129, in main
return conda_exception_handler(main, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/exception_handler.py", line 376, in conda_exception_handler
return_value = exception_handler(func, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/exception_handler.py", line 19, in __call__
return self. handle_exception(exc_val, exc_tb)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/exception_handler.py", line 75, in handle_exception
return self. handle_unexpected_exception(exc_val, exc_tb)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/miniconda3/lib/python3.11/site-packages/conda/exception_handler.py", line 88, in handle_unexpected_exception
self. print_unexpected_error_report(error_report)
File "/opt/miniconda3/lib/python3.11/site-packages/conda/exception_handler.py", line 159, in print_unexpected_error_report
from .cli.main_info import get_env_vars_str, get_main_info_str
File "/opt/miniconda3/lib/python3.11/site-packages/conda/cli/main_info.py", line 15, in <module>
from ..core.index import _supplement_index_with_system
File "/opt/miniconda3/lib/python3.11/site-packages/conda/core/index.py", line 24, in <module>
from .subdir_data import SubdirData, make_feature_record
File "/opt/miniconda3/lib/python3.11/site-packages/conda/core/subdir_data.py", line 53, in <module>
from ..trust.signature_verification import signature_verification
File "/opt/miniconda3/lib/python3.11/site-packages/conda/trust/signature_verification.py", line 12, in <module>
from conda_content_trust.authentication import verify_delegation, verify_root
File "/opt/miniconda3/lib/python3.11/site-packages/conda_content_trust/authentication.py", line 34, in <module>
from .common import (
File "/opt/miniconda3/lib/python3.11/site-packages/conda_content_trust/common.py", line 334, in <module>
cryptography.hazmat.backends.openssl.ed25519._Ed25519PrivateKey, # DANGER
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'cryptography.hazmat.backends' has no attribute 'openssl'
Solution
Enter the bin directory under the conda installation directory, use the pip under it to delete the old version of the package, and then reinstall to install the new version
$ pwd /opt/miniconda3/bin $ ./pip list | grep pyOpenSSL pyOpenSSL 23.0.0 $ ./pip list | grep cryptography cryptography 39.0.1 $ sudo ./pip uninstall cryptography pyOpenSSL $ sudo ./pip install cryptography pyOpenSSL Successfully installed cryptography-41.0.3 pyOpenSSL-23.2.0 $ conda env list # conda environments: # 310 /home/mifen/.conda/envs/310 vpy /home/mifen/.conda/envs/vpy base /opt/miniconda3