Kept strictly confidential. It is used to decrypt messages sent to you and to generate digital signatures.
At its heart, GnuPG relies on , also known as public-key cryptography. This system uses a pair of mathematically linked keys: Kept strictly confidential
Think of a public key like an open safe; anyone can put a message inside and lock it, but only the person with the private key (the combination) can reopen it to read the contents. Key Features and Capabilities GnuPG relies on