bpo-40791: Use CRYPTO_memcmp() for compare_digest #20456
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:func:`hashlib.compare_digest` uses OpenSSL's ``CRYPTO_memcmp()`` function when OpenSSL is available. Note: The ``_operator`` module is a builtin module. I don't want to add libcrypto dependency to libpython. Therefore I duplicated the wrapper function and added a copy to ``_hashopenssl.c``. Signed-off-by: Christian Heimes <christian@python.org>
gpshead
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May 27, 2020
gpshead
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May 27, 2020
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@gpshead 3.10-only or do you want to handle this as a security fix with backport to 3.7 to 3.9? |
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Thanks @tiran for the PR 🌮🎉.. I'm working now to backport this PR to: 3.9. |
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@tiran: Please replace |
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Sorry, @tiran, I could not cleanly backport this to |
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hashlib.compare_digest uses OpenSSL's CRYPTO_memcmp() function when OpenSSL is available. Note: The _operator module is a builtin module. I don't want to add libcrypto dependency to libpython. Therefore I duplicated the wrapper function and added a copy to _hashopenssl.c.. (cherry picked from commit db5aed9) Co-authored-by: Christian Heimes <christian@python.org>
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GH-20461 is a backport of this pull request to the 3.9 branch. |
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May 28, 2020
…H-20461) hashlib.compare_digest uses OpenSSL's CRYPTO_memcmp() function when OpenSSL is available. Note: The _operator module is a builtin module. I don't want to add libcrypto dependency to libpython. Therefore I duplicated the wrapper function and added a copy to _hashopenssl.c.. (cherry picked from commit db5aed9) Co-authored-by: Christian Heimes <christian@python.org>
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:func:
hashlib.compare_digestuses OpenSSL'sCRYPTO_memcmp()functionwhen OpenSSL is available.
Note: The
_operatormodule is a builtin module. I don't want to addlibcrypto dependency to libpython. Therefore I duplicated the wrapper
function and added a copy to
_hashopenssl.c.Signed-off-by: Christian Heimes christian@python.org
https://bugs.python.org/issue40791