How do I encrypt file using gpg encryption in xp_cmdshell SQL server

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SQL

cmd

When I try to run the sql script for encryption, it takes too long to execute the script and I am forced to cancel the query.
However, other gpg commands like list--keys, --import-keys work perfectly.

Here is my script:

select @encrypt = '"c:\Program Files (x86)\GNU\GnuPG\gpg2.exe" -e -r '+ @key+' ' + @sPath+'filename.txt'
exec master..xp_cmdshell @encrypt 

What I have tried:

I guess it is waiting for a user input but how do i make sure about that?