The gpgCrypt plugin enables secure encryption of Obsidian notes using GnuPG and OpenPGP standards. It supports asymmetric encryption with key pairs, offering seamless integration into Obsidian without disrupting markdown functionality. The plugin allows users to encrypt individual notes or enable automatic encryption for all notes upon modification. It includes features such as password retention, compression options, and smartcard support for advanced security setups. With compatibility for local or remote GnuPG installations and OpenPGP.js, gpgCrypt ensures flexibility and security for note management.