OS / Platform:
 Windows 2000,
 Windows 2003,
 Windows 98,
 Windows NT,
 Windows XP,
 
 
Requirement:
Adobe Acrobat
 
Limitations:
21 Days Free Trial
 
 
 
 
Editors Note 
Document securing tool that can encrypt and decrypt PDF documents in an efficient way. Encrypted PDF documents can be decrypted and your PDF documents can be encrypted to protect from unauthorized copying or modification. Files can be encrypted with both Adobe Advanced 128-bit encryption and Adobe Standard 40-bit encryption algorithms.