GPG problem with passphrase

[jatinvmehta]

ProcessStartInfo psi = new ProcessStartInfo("cmd.exe");

psi.CreateNoWindow = false;

psi.UseShellExecute = false;

psi.RedirectStandardInput = true;

psi.RedirectStandardOutput = true;

psi.RedirectStandardError = true;

psi.WorkingDirectory = "C:";

System.Diagnostics.Process process = System.Diagnostics.Process.Start(psi);

string sCommandLine = "echo test| gpg -es --passphrase-fd 0 --recipient [e-mail] -o c:\test.gpg c:\test.txt";

process.StandardInput.WriteLine(sCommandLine);

process.StandardInput.Flush();

process.StandardInput.Close();

process.WaitForExit();

process.Close();



Same command run succesfully from commandline. I don't understand what is the problem.



Thanks in advance.

[balabaster]

What error are you getting, what line of code is this failing at? If you don't tell us exactly what's wrong, there's no way anyone can help fix it...

[jatinvmehta]

What error are you getting, what line of code is this failing at? If you don't tell us exactly what's wrong, there's no way anyone can help fix it...

Hi Bala, i don't get any error. When i run the application, nothing happen and if i say
psi.CreateNoWindow = false;

It opens command window with following text

Reading passphrase from file descriptor 0

That's it.

[balabaster]

That's all you're telling it to do... if you take everything that's between the quotes from your command and paste it into the command window, what does it do?

[jatinvmehta]

That's all you're telling it to do... if you take everything that's between the quotes from your command and paste it into the command window, what does it do?

if i open command window by start --> run --> cmd and type following line

echo test| gpg -es --passphrase-fd 0 --recipient [e-mail] -o c:\test.gpg c:\test.txt

I runs fine and create test.gpg.

Now, i have c# application and when i run same command by opening cmd.exe, it doesn't work.

[balabaster]

Did you mean to do something like this?

string sCommandLine = "echo test| gpg -es --passphrase-fd 0 --recipient [e-mail] -o c:\test.gpg c:\test.txt";
ProcessStartInfo psi = new ProcessStartInfo(sCommandLine);
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
psi.RedirectStandardOutput = true;
psi.WorkingDirectory = "C:";
System.Diagnostics.Process process = System.Diagnostics.Process.Start(psi);
string output = process.StandardOutput.ReadToEnd();
MessageBox.Show(output);
process.WaitForExit();
process.Close();

[jatinvmehta]

Did you mean to do something like this?

string sCommandLine = "echo test| gpg -es --passphrase-fd 0 --recipient [e-mail] -o c:\test.gpg c:\test.txt";
ProcessStartInfo psi = new ProcessStartInfo(sCommandLine);
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
psi.RedirectStandardOutput = true;
psi.WorkingDirectory = "C:";
System.Diagnostics.Process process = System.Diagnostics.Process.Start(psi);
string output = process.StandardOutput.ReadToEnd();
MessageBox.Show(output);
process.WaitForExit();
process.Close();

No, my c# application is window service. It takes file from directory encrypt it and store it on directory

[balabaster]

No, my c# application is window service. It takes file from directory encrypt it and store it on directory

Well...the code I posted will execute your command line...it dumps the output to a message box, but if you remove the two lines pertaining to the output itself, then you should find that the code actually executes the command line you specified.

[jatinvmehta]

Well...the code I posted will execute your command line...it dumps the output to a message box, but if you remove the two lines pertaining to the output itself, then you should find that the code actually executes the command line you specified.

Hi, ProcessStartInfo expect file name. If i run with your code, it stops at ReadToEnd() function for unlimited time.

[balabaster]

string sCommandLine = "echo test| gpg -es --passphrase-fd 0 --recipient [e-mail] -o c:\test.gpg c:\test.txt";
ProcessStartInfo psi = new ProcessStartInfo(sCommandLine);

These two lines of code assign a command to ProcessStartInfo. You don't need the ReadToEnd() because you're not actually outputting the response to screen. The command line creates the file so you don't need any other output.

Delete lines 8 and 9 of the code I posted if you're running as a Windows Service as it is irrelevant.