For the past several days, whenever I run up2date I get a message that says "The package 'X' is signed with an unknown GPG signature. Continue?" after every single package that I select to update and ...

Encryption is one of the pillars of modern-day communications. You have devices that use encryption all the time, even if you are not aware of it. There are so many applications and systems using it ...

GnuPG, the open replacement for PGP, is an excellent tool to manage cryptographic signatures to files or e-mails for validity and integrity, as well as a tool to encrypt and decrypt sensitive files.

Protect your code commits from malicious changes by GPG-signing them. Often when people talk about GPG, they focus on encryption—GPG's ability to protect a file or message so that only someone who has ...

In my recent post about the handling of the security incident and compromised ISO image at Linux Mint, I said at the end that users should always verify the checksum of a downloaded image before ...