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January 2021

6 participants
2 discussions

Rust in pyca/cryptography
by Alex Gaynor Jan. 19, 2021

Jan. 19, 2021

Hi all, As we previewed in August [0] we're planning to incorporate Rust code into pyca/cryptography. I'm thrilled to announce that we just landed a patch that starts us down that path: https://github.com/pyca/cryptography/commit/c84d6ee0605645a24fd93c436967ee2… As a reminder, the schedule for this is: - The 3.4 release will include a Rust extension module, which is built by default. It is not required for cryptography to work, and can be disabled at build time with an environment variable. - The 3.5 release will include a Rust extension module, without which cryptography will not work. For all releases, users who consume our wheels from PyPI will not need to make any changes. Users who built cryptography from source will need to ensure they have a Rust toolchain available. For users who build or redistribute cryptography, we strongly suggest that you use the time before our 3.4 release to ensure you have a Rust toolchain installed, and verify that building cryptography from source in git works for you: https://cryptography.io/en/latest/installation.html#rust Happy holidays, Alex [0]: https://mail.python.org/pipermail/cryptography-dev/2020-August/000976.html -- All that is necessary for evil to succeed is for good people to do nothing.

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Heap error in _openssl.pyd
by Matthews Brian Jan. 12, 2021

Jan. 12, 2021

Hi, We are using pyOpenSSL 20.0.1 with cryptography 3.3.1 in Python 2.7.17 x64. This is running on Microsoft Windows 2019. The pyOpenSSL is being used as part of a twisted Web implementation, handling TLS HTTPS communications. We are experiencing random crashes in the _openssl.pyd module. On some sites it is once per month, on other sites it is once per day. The crash dump shows a HEAP error originating in the _openssl.pyd module during TLS negotiation. 1. Has anyone else experienced this 2. Are the symbol pdb files available for the _openssl.pyd object 3. What VS studio version are the wheels for 2.7 built with Thanks Brian.

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