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Q: How to install public key in host windows server 2012

xChaaxMy user from another server gave his public key to me and asked me to install this public key into my server so he can connect to my server. Did some research and I have to create a directory called .ssh and paste my user public key in a Notepad and save this text file into the .ssh directory. My...

ssh windows-server-2012 openssh sftp
Martin Prikryl
Martin Prikryl
If the user is already a user on your server (has password authentication working), he/she can setup the public key on his/her own.
Dave X
Dave X
What OS are you using?
Bernhard Döbler
Bernhard Döbler
... can do this on their own ... using ssh-copy-id for instance.
xChaax
xChaax
I’m using windows server 2012 @Dave X
Martin Prikryl
Martin Prikryl
As a client or as a server?
xChaax
xChaax
19:40
As a server @Martin Prikryl
Martin Prikryl
Martin Prikryl
But that may completely change the question. Do you even use OpenSSH on the Windows Server?
xChaax
xChaax
Previously we as a client we connect to host using winscp. Now as a host. I think there is OpenSSH in my server.
Martin Prikryl
Martin Prikryl
"think" is not enough. You have to know -- And you have to know a lot about how it was installed, otherwise we cannot help you.
xChaax
xChaax
Upon checking OpenSSH was installed in my server. Your answer is more to unix right?
Martin Prikryl
Martin Prikryl
My answer is about OpenSSH. Only the part about permissions is not valid for Windows. The rest still stands. As long as your Windows build of OpenSSH behaves reasonably. What build is that?
xChaax
xChaax
19:40
Windows server 2012 build 9200. How to create authorized_keys file and what format is that ?
Martin Prikryl
Martin Prikryl
I was asking for build of the OpenSSH, not Windows. And I've mean the "build" (how it was created, there are many builds of OpenSSH for Windows), not "build number'" -- Basically I'm asking where did you get your version of OpenSSH from?
xChaax
xChaax
Basically choose apps from windows settings. Then add a feature and choose OpenSSH client to install..
Martin Prikryl
Martin Prikryl
On Windows 2012? There's no "Settings" or "Apps" on Windows 2012 --- OpenSSH client? We are talking about server here!
xChaax
xChaax
On windows server 2012 the OpenSSH is in this path C:\Windows\System32\OpenSSH. I'm not really understand is this not consider OpenSSH. I'm stuck on how to create authorized_keys and what is the file format for authorized_keys.
Martin Prikryl
Martin Prikryl
I've shown you the format in my answer. How to create that format depends on what format is the key you have now. You never told us.
xChaax
xChaax
19:40
The format of public key is same exactly as u shown in your answer.
Martin Prikryl
Martin Prikryl
So why do you ask about format for authorized_keys file???
xChaax
xChaax
It’s unclear for me, the public key ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQB/nAmOjTme... must be save in authorized_keys right ? So I want to know if I dont have this file, how can I create this file, is the format authorized_keys.text ?
Martin Prikryl
Martin Prikryl
No the file name is authorized_keys - no extension. The file is plain ASCII text file. You better use *nix line endings. Though maybe the Windows build of OpenSSH can handle Windows line endings. But I'm not sure.

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