Encrypting and decrypting files with password in Linux

Sometimes you need to send a file containing sensitive information across to someone over internet and you started thinking, “Gee, I’ve got some pretty sensitive information in the file. How can I send it securely?” There are many ways send encrypted files. A good way for encrypting files is using a long password with GPG or GNU Privacy Guard (GnuPG or GPG) tool. Once you’ve encrypted the file, you can do few things.

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1. Put the file in an FTP or Web server the requires a second set of username and passwords.
2. To further secure, you can put a firewall rule to allow a single IP/Network to access that location.
3. Send the file via email as an attachment.
4. Send the file via encrypted email. (double encryption). We will look into email encryption soon.
5. Create a torrent file and send it securely as a private torrent if the file is too big. (i.e. movies, large files etc.)

So the possibilities are endless. GnuPG or GPG works in Windows, Linux, Mac (any iOS devices), Android, Blackberry etc. In short GnuPG or GPG is supported on all platforms and that’s what makes it such a good encryption tool.
 

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