Decrypted file can be opened in any PDF viewer (e.g. Acrobat Reader ) without any restrictions -- edit/copy/print functions enabled. A PDF document may be protected by password for opening ('user' password) and the document may also specify operations that should be restricted even when the document is decrypted: printing; copying text and graphics out of the document; modifying the document; and adding or modifying text notes (using 'owner' password). Features: Easy to use. Does NOT need Adobe Acrobat software. Windows 98, ME, NT, 2000 ,XP and 2003 support. Set the document title, subject, author, keywords to the decrypted PDF file(s). The rate of decryption is very fast. Supports Adobe Standard 40-bit Encryption and Adobe Advanced 128-bit Encryption.