How do I set up my dot net program to send files to server with multiple host key fingerprints? :: Support Forum

jrmcjim
Joined:: 2019-02-22
Posts:: 3
Location:: US

How do I set up my dot net program to send files to server with multiple host key fingerprints?

2019-02-22 20:01

Martin,
I have a program that sends files to multiple sites that until now had a single fingerprint.

I now have a site that has an SHA-256 and MD5 fingerprint and I have not discovered how to set this up in my code.

Thanks,
Jim

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 41,442
Location:: Prague, Czechia

Re: How do I set up my dot net program to send files to server with multiple host key fingerprints?

2019-02-26

Use only the SHA-256 fingerprint (the stronger one) in your code.

WinSCP GUI can generate a code template for you:
https://winscp.net/eng/docs/ui_generateurl#code

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jrmcjim
Joined:: 2019-02-22
Posts:: 3
Location:: US

2019-02-27 17:50

Thanks Martin. I finally understood (I think) what you referred me to and generated the stub to connect. Using the Host Key Fingerprint from the generated code, I received the following error:

SSH host key fingerprint "ssh-rsa 2048 1gqvgmbEUGYL+fKsHOMQrHmAtl3MflTavgKK6kIdl04=" does not match pattern /((ssh-rsa|ssh-dss|ssh-ed25519|ecdsa-sha2-nistp(256|384|521))( |-))?(\d+ )?([0-9a-f]{2}(:|-)){15}[0-9a-f]{2}(;((ssh-rsa|ssh-dss|ssh-ed25519|ecdsa-sha2-nistp(256|384|521))( |-))?(\d+ )?([0-9a-f]{2}(:|-)){15}[0-9a-f]{2})*/

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 41,442
Location:: Prague, Czechia

2019-03-01

Then your .NET program is using an old version of the WinSCP .NET assembly that didn't support SHA-256 fingerprints at all.
https://winscp.net/tracker/1589

Update to the latest version (preferred). Or use MD5 fingerprint.

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jrmcjim

2019-03-01 15:13

Thank you Martin! Got it and got it done.

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How do I set up my dot net program to send files to server with multiple host key fingerprints?

How do I set up my dot net program to send files to server with multiple host key fingerprints?

Re: How do I set up my dot net program to send files to server with multiple host key fingerprints?

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