Monday, June 22, 2009

GPG GUI - Password Protect Any File

GPG GUI has the sole purpose of password protecting individual files so that they can be opened at a later time.

GPG GUI is a front end for the symmetric passphrase feature of GnuPG. This means that any file, of any size, may be encrypted and protected with a password so that no other user can read the contents of the file. Folders cannot be encrypted or decrypted.
Basic usage for this application would be to get a copy of the file you want to protect, and then opening it with GPG GUI. Once the file is selected, the text entry area would be the place to specify a password the file will be encrypted with. Blank passwords will not work. Selecting "Encrypt" will start the short process that may take time depending on the size of the file. Once the process ends, the directory that the original file is in will have a duplicate protected copy, with the extention .gpg at the end.
I would highly recommend that you check that the protected file will be decrypted by renaming the original and trying out the decrypt action. This will verify that you entered the password correctly. If you delete the original and the password does not work on the encrypted version, you will NOT be able to restore it.
After you have encrypted the file, delete the original if you wish and store the file in a safe place. If you want to share the file with others, you may tell them the password so that they can decrypt the file using GPG GUI or GnuPG.


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