EPISODE · Nov 13, 2025 · 36 MIN
Memory Safety and Modernizing Python's Cryptography Ecosystem with Alex Gaynor
from GR-OSS OUT Podcast · host G-Research Open Source Software
Alex Gaynor, long-time open source contributor and core developer of Django, PyPy, and Python's cryptography library, joins us to discuss the challenging transition from C to Rust in the Python ecosystem. We explore memory safety vulnerabilities like buffer overflows, the technical and community challenges of introducing Rust to a major Python library, and how to navigate hostile feedback during controversial changes. Alex shares lessons from shipping the first Rust-based cryptography release, managing platform compatibility issues, and why sometimes breaking backwards compatibility is necessary to move an ecosystem forward. A must-listen for anyone maintaining critical open source infrastructure or dealing with the "gross" realities of pushing technological boundaries. https://cryptography.io/en/latest/ For a video version of this podcast, check out https://youtu.be/FQayBHWVsQA. The GR-OSS OUT Podcast is produced by Ben Wiley.Special Guest: Alex Gaynor.
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Memory Safety and Modernizing Python's Cryptography Ecosystem with Alex Gaynor
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