PGP encrypted emails on Mac OS X/Sierra using GPGtools GPGsuite

openPGP decrypted email

As part of my cybersecurity posts I’ve decided to write briefly about PGP (Pretty Good Privacy) encryption of email. We will use GPG which stands for GNU Privacy Guard and is a compatible free software equivalent of Symantec’s proprietary encryption algorithm. Both PGP and GPG are interchangeable so you can use either protocol. These keys use a high level of encryption. I Use RSA 4096 for my keys which is possibly a little overkill, but I like to future proof when learning.

GPG is important for emails as it means that an email remains encrypted between the sender & the receiver. It works on the principle of key pairs. Each user generates a pair of keys, one private key remains secret and on the user’s computer, the other, known as a public key is free to distribute on the internet and allows you to pass it on to those you wish to communicate with. Read More....