Password protecting files with open cryptography
Linux and other UNIX like operating systems offer strong file permissions and POSIX ACL (access control list) concept in computer security used to enforce privilege separation.
However, none of them offers a password to protect files. This article explains howto use GNU gpg (GNU Privacy Guard) encryption and signing tool, openssl or mcrypt commands to encrypt or decrypt files with a password with open source cryptographic software.
(Submitted by nixCraft Tue May 16, 2006 )
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