[pdftex] Encryption, passwords and so on.

[Martin Heller]

John Culleton skrev:
> I just purchased an e-book with encrypted text and also a user password 
> required to read it.  Back in 2003 encryption was removed from pdftex , and 
> it was suggested that another program be used to encrypt the pdf, add 
> passwords etc. No doubt the full Adobe distiller program will do this.  Is 
> there an open source equivalent?  

pdftk <http://www.accesspdf.com/pdftk/>