https://planetikiru.org/tags/security/ Recent content in Security on Planet I Kiru Hugo en-us Tue, 25 Aug 2026 20:04:17 +0800 https://planetikiru.org/posts/how-to-use-gpg/ Tue, 25 Aug 2026 20:04:17 +0800 https://planetikiru.org/posts/how-to-use-gpg/ <p><img src="./pic.jpg" alt="pic"></p> <p>GPG (GNU Privacy Guard) is an implementation of PGP and is widely used in the field of cryptography. Its fundamental principle is asymmetric cryptography, also known as public-key cryptography. This article will not delve deeply into its underlying principles but will instead introduce its basic usage. The scenarios described below are those I might encounter in my daily work.</p> <h2 id="creating-a-key-pair">Creating a Key Pair</h2> <p>Since GPG is based on asymmetric cryptography technology, the first step in using it is to generate a key pair: a public key and a private key:</p>