How do I add a public key?

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Hi, my servers uses public keys for authentication. How do I invoke it in the code?

What I have tried:

I tried everything to add the public key file but don't know how to invoke it from the code

Posted 19-May-16 21:27pm

rcfortuna

Updated 20-May-16 22:14pm

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[no name] 20-May-16 3:34am

I tried everything
Most unlikely, but in either case we need much more detail of your problem to be able to help.

RickZeeland 20-May-16 4:44am

Are you using a certificate, e.g. from Comodo ?

rcfortuna 20-May-16 18:20pm

If we're going to go to our Linux server from Windows we're using Putty. In Putty we choose SSH->Auth then we enter the Private key for authentication. The private key is generated from puttygen using the following options:

PuTTY-User-Key-File-2: ssh-dss
Encryption: aes256-cbc

I'm sorry for the confusion I guess the correct term is private key instead of public.

I've figured that I'll put my private key path in the IdentifyFile property and my AuthType is Poderosa.ConnectionParam.AuthType.PublicKey. However I got "Wrong key format" when I tried to connect.

phil.o 20-May-16 19:27pm

Please show your actual code, and describe the format of the key you are providing. The error message states a key-format issue.
Please be precise when you describe your issue. Forcing people to have to guess makes less likely you getting an answer.

rcfortuna 20-May-16 19:51pm

hi, i've realized that our key is generated using AES256 encryption.

Encryption: aes256-cbc

here's the snippet of my code:

terminalControl1.UserName = username;
terminalControl1.Host = hostname;
terminalControl1.Password = passwordKey; // my password
terminalControl1.IdentifyFile = privateKey; // my private key file eg. c:\keys\mykey.ppk
terminalControl1.AuthType = Poderosa.ConnectionParam.AuthType.PublicKey;

I get it now, it doesn't support AES256 encryption/decryption.

Anyway here's what the key looks like:

---- BEGIN SSH2 PUBLIC KEY ----
Comment: "General ssh lvs key username"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---- END SSH2 PUBLIC KEY ----

phil.o 21-May-16 4:09am

The content of the file is a Base64 encoded byte array.
If you want to get the key (the byte array) from its Base64 representation, please see my solution.

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

phil.o · Answer 1 · 2016-05-20T22:14:00

You can get a byte array back from its Base64 representation with the following code:

C#

string base64 = "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
eqMLteFrtlzjEELgl6ejFryCCG9FZv8dMj1nMSgAAAEAIZMSFXJzYrYNims/Mh36Dr6bd2tYLGv6rkm0hfbXzYwWo9OKuSc5F3gWYjnN411kjLh1f1elZVJdhXChxb1k/+/NwESvrSDoN/6dyIUiRbdbDaOLwbtsai8fwaJOrj06/t4Y05QTz3Bj+kdT1sjgnIxjfalinRrSNHUTkud+wDS9nbOj24Phn7S50NAaHyZNzOjcszyYfgkL9YPz75mA
CjAtSeAn5vtXswVeA4vqCUzTolDmKGdvLjclcP6RCdxTjU9mLulKhin4yL3XSiGJ+uc+BsYhOIa+bCzq1gbF9A5h0IiKyfDTE3ZxiDuPZmGYhNJ2CVUIlkRFcPvdaLBKMA==";
byte[] key = Convert.FromBase64String(base64);

How do I add a public key?

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How do I add a public key?

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