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do not use RTLD_DEEPBIND if PYCRYPTODOME_DISABLE_DEEPBIND is set to empty string #807

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do not use RTLD_DEEPBIND if PYCRYPTODOME_DISABLE_DEEPBIND is set to empty string #807

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2 changes: 1 addition & 1 deletion Changelog.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -195,7 +195,7 @@ New features
* Added cSHAKE128 and cSHAKE256 (of SHA-3 family). Thanks to Michael Schaffner.
* GH#558: The flag RTLD_DEEPBIND passed to ``dlopen()`` is not well supported by
`address sanitizers <https://github.com/google/sanitizers/issues/611>`_.
It is now possible to set the environment variable ``PYCRYPTDOME_DISABLE_DEEPBIND``
It is now possible to set the environment variable ``PYCRYPTODOME_DISABLE_DEEPBIND``
to drop that flag and allow security testing.

3.10.4 (25 September 2021)
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2 changes: 1 addition & 1 deletion lib/Crypto/Util/_raw_api.py
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Expand Up @@ -99,7 +99,7 @@ def load_lib(name, cdecl):
@cdecl, the C function declarations.
"""

if hasattr(ffi, "RTLD_DEEPBIND") and not os.getenv('PYCRYPTODOME_DISABLE_DEEPBIND'):
if hasattr(ffi, "RTLD_DEEPBIND") and os.getenv('PYCRYPTODOME_DISABLE_DEEPBIND') is None:
lib = ffi.dlopen(name, ffi.RTLD_DEEPBIND)
else:
lib = ffi.dlopen(name)
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