>>Hi all,
>>
>>I've got a requirement that for an existing PDF I need to protect it with a password.
>>Can anyone recommend an API, usable from VFP (and possible .NET) to do this ?
>>
>>Thanks in advance,
>>
>>Walter
>
>Walter, you can use the PdfTK for that. They have a server operable from the command line that that we integrated easily into our applications where PDF manipulation functionalities were required.
>
>To get your password protected PDFs (variable arguments in bold):


>pdftk.exe source.pdf output protected.pdf user_pw password
>
>PdfTk website and server's page: https://www.pdflabs.com/tools/pdftk-server/



Thanks antonio, This seems to fit to what we need. One question left: Can you distribute it to clients ? Any specific install needed or can you just execute it as a exe file ?