ripemd160 HMAC support

[krz101]

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest version
• Search the existing issues.

Steps to reproduce

When using ssh command I am getting error "no matching MAC found. Their offer: hmac-ripemd160, hmac-sha1".

In older version 8.1 I did not have this issue with the same ssh command.

Expected behavior

Expected ssh command to create tunnel connection with no errors

Actual behavior

"no matching MAC found. Their offer: hmac-ripemd160, hmac-sha1"

Error details

No response

Environment data

Name                           Value
----                           -----
PSVersion                      5.1.19041.5007
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.19041.5007
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Version

9.5

Visuals

No response

[maertendMSFT]

This is a result of a change that was made upstream in OpenSSH 7.6: https://www.[openssh.com/txt/release-7.6](https://www.openssh.com/txt/release-7.6)

Did you have it explicitly added after 7.6 was released?

We also removed SHA1 in release 9.5, so you may have just been relying on SHA1. Once that was removed and pushed out, then you were no longer supported by default.