Secure your digital contents which are in Adobe Pdf format by protecting them with password security & encryption. Pdf open password restricts un-authorized opening of your pdf however pdf owner password restricts edit, print & copy of pdf. Two modes of encryption are available to protect your data, 40-bit RC4 and 128-bit RC4. 128-bit encryption level security is much stronger than 40-bit and recommended too. AWinware Pdf Encryption software is designed to encrypt bulk Adobe pdf files at very affordable prices. Program is very easy in use and compatible with all Windows based operating system. Tool works perfectly on Windows 8 operating system. Two types of password options are available and you can choose any of them or both. One is user password and another is owner password. As described above, owner password is used to limit the accessibility of Adobe pdf like editing, printing, copying, form filling, signing, commenting, page extraction and conversion etc. If pdf is user password protected, only authorized person can get that unlocked using correct password only. Pdf encryption trial version is available for evaluation and stamps watermark on each page. Registered copy works without any limitation.