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The standard security provided by PDF consists of two different methods and two different passwords: a user password, which encrypts the file and prevents opening, and an owner password, which specifies operations that should be restricted even when the document is decrypted, which can include modifying, printing, or copying text and graphics ...
A review in 2020 reported that the virtual printer had the features of most such programs, with additional security features, including password-protecting [3] PDF files during creation with 128/40 encryption, and watermarking. [1]
In Excel and Word 95 and prior editions a weak protection algorithm is used that converts a password to a 16-bit verifier and a 16-byte XOR obfuscation array [1] key. [4] Hacking software is now readily available to find a 16-byte key and decrypt the password-protected document. [5] Office 97, 2000, XP and 2003 use RC4 with 40 bits. [4]
[5] [6] These technologies are DRM controls, document watermarking, US Government encryption, license control, and a proprietary secure PDF viewer. [7] [8] Additional DRM protection includes documents locking to specific devices or locations. Locklizard does not make use of password mechanisms, digital signatures, plug-ins, and temporary files.
At AOL, we make every effort to keep your personal information totally secure. SSL (Secure Sockets Layer) is an industry standard for encrypting private data sent over the Internet. It helps protect your account from hackers and insures the security of private data sent over the Internet, like credit cards and passwords.
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