mscdex / mscdex/ssh2

Post-quantum safe kex algorythm?

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#1,478 5 comments 0 reactions 0 assignees View on GitHub

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feature request
Dominant language
JavaScript
Stars
5.8k
Forks
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PR merge metrics
No merged PRs in 30d

Description

Using ssh2 via Azure pipelines and failing to connect to an ssh server that only has

KexAlgorithms sntrup761x25519-sha512@openssh.com

The version used is https://github.com/microsoft/azure-pipelines-tasks/blob/master/Tasks/CopyFilesOverSSHV0/package.json#L26

    "ssh2": "^1.15.0",
    "ssh2-sftp-client": "^12.0.1"

Is this expected, or does Microsoft need to update ssh2? I was not able to find any hints.

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First steps

  1. Read the whole issue, then the project's contributing guide.
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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The report identifies Tasks/CopyFilesOverSSHV0/package.json and the ssh2 1.15.0 dependency; start by checking which key-exchange algorithms that version supports. Reproduce the connection against a server offering only sntrup761x25519-sha512@openssh.com. Done means the compatibility behavior is confirmed and the supported or unsupported outcome is clearly documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, node.js
Domain
networking, security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
45/100

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