Hi I am searching for a tool (free software) to encrypt pdf files on Unix. Below is my result: http://www.accesspdf.com/pdftk/ I hope pdftk can become a port. Patrick -------------------------------------------------------- http://www.wsi.edu.hk/funding5_hkdoemai010304.html 100%¾Ç¦n^»y¡A§K¶O4Ó¤ë½Òµ{¡AݨɬF©²¶i׸ê§U¡A¥ß§Y¦æ°Ê!