pyca / pyca/pyopenssl

Add support for TLS 1.3 Early Data

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#638 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Python
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Forks
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Avg merge
1d 6h
Merged PRs (30d)
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Description

Deferred: we can't do this until cryptography supports OpenSSL 1.1.1.

It would be very helpful for applications like Twisted to have access to TLS 1.3 Early Data (see this Twisted ticket). To do that PyOpenSSL needs to expose a few functions:

  • SSL_SESSION_get_max_early_data
  • SSL_write_early_data
  • SSL_read_early_data
  • SSL_CTX_set_max_early_data

It'd be good to add this support to PyOpenSSL when it becomes possible.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by confirming that the cryptography dependency supports OpenSSL 1.1.1 and TLS 1.3 Early Data; the issue names no files or tests. The work is done when PyOpenSSL exposes SSL_SESSION_get_max_early_data, SSL_write_early_data, SSL_read_early_data, and SSL_CTX_set_max_early_data.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
security
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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