Added support for RSA client authentication with SHA-2

[fwininger]

Rebase from #811

[fwininger]

@mfazekas I have some trouble with codecov configuration. Can you check please ?

[AntonioMeireles]

@fwininger

Thanks for your great work!

it would be handy if this got merged soonish and a new version tagged ;-)

Have a great weekend too!

[sae249833]

+1 on getting this merged ASAP. A new release to include this and #771 would also be great.

Thanks!

[fwininger]

@mfazekas can you release a new minor version ?

[svoop]

Wow, tracking our failing Capistrano deploy (after Gentoo upped to openssh 8.8 yesterday) to this issue took me a while. Bundling from Github fixes the problem, thanks a lot @fwininger ! A (minor) release would still be great thou. /cc @mfazekas

[trevor-vaughan]

This fixes issues for me on RHEL 9-based systems since, like Fedora, they also disable ssh-rsa out of the box.

[lnussbaum]

Hi @mfazekas ,

Do you have plans to release a new version of net-ssh with this fix?
Version 6.3.0beta1 cannot connect to Debian 'testing' machines because of this.

Thanks!

Lucas

[sarcasticadmin]

@lnussbaum Im referencing this repo directly as a work around until the release gets cut: https://github.com/socallinuxexpo/scale-network/blob/f4afff18466bc465e872165890c7af171d4c583a/tests/serverspec/Gemfile#L9

Hope that helps

[Rylon]

We're having trouble connecting to Ubuntu 22.04 servers which drop support for sha1 and require sha2, which this PR adds support for. If I test by using the current HEAD of this repo, then it works.

Are you planning on cutting a new release of the gem containing the changes from this PR? It would be greatly appreciated, thanks, especially since Ubuntu 22.04 is the new LTS and is out now.

Thanks again :)

[fwininger]

I currently work on openssl 3 issue. The master branch is not totaly compliance with ubuntu 22.04.

[toxaq]

Just adding this solution for future Googlers to find the solution to the problem that led me here:

https://stackoverflow.com/questions/72068406/capistrano-fail-to-deploy-rails-app-due-to-incompatibility-with-openssl-3-0

Ubuntu 22.04 LTD not accepting Capistrano connections despite identical configs.