How works the 'SSLPassPhraseDialog'

[Francisco Javier Martínez Martínez]

Hello I had noticed that I could give the password of the private key fo the server with the 'SSLPassPhraseDialog' with no human-interactive in the server start up. With the directive 'exec:/path/to/program' but I don´t had any idea of this program. Would you please post an example of this program to take it as pattern to make my customized one. Thanks in advance.