How to launch ssh-keygen.exe from C# windows form?

Question

Hi,
I want to launch from a button in a Windows Form this command:

    private void buttonGenerateKey_Click(object sender, EventArgs e)
    {
       var workingDir = @"C:\Users\me\Desktop\MyApp\key";
      Directory.CreateDirectory(workingDir);
      Process process = new Process();
      process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
      process.StartInfo.FileName = @"C:\Windows\System32\OpenSSH\ssh-keygen.exe";
     process.StartInfo.Arguments = $"-t ecdsa -b 256 -m pem -N password123 -f \"{Path.Combine(workingDir, "new_ecdsa")}\"";
     process.StartInfo.UseShellExecute = false;
      process.StartInfo.CreateNoWindow = true;
      process.Start();
      process.WaitForExit();
      process.Close();
    }

But, when I click on this button (buttonGenerateKey), an exception occurs: Cannot find specified file: System.ComponentModel.Win32Exception (0x80004005): Cannot find specified file.
in System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
...

the line number is the one corresponding to process.StartInfo.FileName = ....
my App is running as administrator so there shouldn't be any privilege issues. And ssh-keygen.exe exists in C:\Windows\System32\OpenSSH (I've installed OpenSSH).

How I can solve this? I've already tried to:

• Delete the path before ssh-keygen.exe
• Copy ssh-keygen.exe in my working dir

But nothing goes right.

Thank you.

Answer 1

Add before :

            bool bWow64 = false;
            IsWow64Process(Process.GetCurrentProcess().Handle, out bWow64);
            if (bWow64)
            {
                IntPtr OldValue = IntPtr.Zero;
                bool bRet = Wow64DisableWow64FsRedirection(out OldValue);
            }

with :

    [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    private static extern bool IsWow64Process(IntPtr hProcess, out bool Wow64Process);

    [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    private static extern bool Wow64DisableWow64FsRedirection(out IntPtr OldValue);