---
id: 1554
title: "We build X.509 chains so you don’t have to"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2024/01/25/we-build-x-509-chains-so-you-dont-have-to/"
published_at: "2024-01-25T14:00:22Z"
tags: ["open-source", "rust", "cryptography", "python", "tls", "pki", "x509", "path-validation"]
phying_url: "https://phying.com/item/1554"
lang: en
---

# We build X.509 chains so you don’t have to

## Summary

Trail of Bits and the Python Cryptographic Authority built a pure-Rust X.509 path validation implementation for the cryptography library plus the x509-limbo conformance test suite.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2024-01-25T14:00:22Z
- **Original:** https://blog.trailofbits.com/2024/01/25/we-build-x-509-chains-so-you-dont-have-to/
- **Phying News:** https://phying.com/item/1554