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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]
Watermarking is the action of signing a file with an ID or copyright mark. OpenPuff does it in an invisible steganographic way, applied to any supported carrier. The invisible mark, being not password protected, is accessible by everyone (using the program). [1] Multi cryptography architecture Multi cryptography architecture
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Apache OpenOffice from version 3.0 can import Office Open XML files but not save them. [46] Version 3.2 improved this feature with read support even for password-protected Office Open XML files. [47] [48] [49] The Go-oo fork of OpenOffice could also write OOXML files. KOffice from version 2.2 and later was able to import OOXML files.
Password notification email or password recovery email is a common password recovery technique used by websites. If a user forgets their password, a password recovery email is sent which contains enough information for the user to access their account again. This method of password retrieval relies on the assumption that only the legitimate ...
Encryption can be used to protect data "at rest", such as information stored on computers and storage devices (e.g. USB flash drives). In recent years, there have been numerous reports of confidential data, such as customers' personal records, being exposed through loss or theft of laptops or backup drives; encrypting such files at rest helps ...