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(C# UWP/WinRT) SFTP use Cert's Private Key for Authentication (Windows)

Demonstrates how to use the private key of a pre-installed certificate (on Windows) for SFTP authentication. The certificate's private key must be marked as "exportable" when originally installed.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Cert cert = new Chilkat.Cert();

// Load the certificate from the Windows certificate store
bool success = cert.LoadByCommonName("my_cert_common_name");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Get the private key.  
Chilkat.PrivateKey privKey = cert.ExportPrivateKey();
if (cert.LastMethodSuccess == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

string privKeyPem = privKey.GetPkcs8Pem();
if (privKey.LastMethodSuccess == false) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

Chilkat.SshKey sshKey = new Chilkat.SshKey();
success = sshKey.FromOpenSshPrivateKey(privKeyPem);
if (success == false) {
    Debug.WriteLine(sshKey.LastErrorText);
    return;
}

// Connect to an SSH/SFTP server
Chilkat.SFtp sftp = new Chilkat.SFtp();
success = await sftp.ConnectAsync("sftp.example.com",22);
if (success == false) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Authenticate with the SSH server using a username + private key.
// (The private key serves as the password.  The username identifies
// the SSH user account on the server.)
success = await sftp.AuthenticatePkAsync("mySshLogin",sshKey);
if (success == false) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

Debug.WriteLine("OK, the connection and authentication with the SSH server is completed.");

// This example is only to show the connection + authentication using a private key associated with a certificate in the Windows certificate store...

 

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