The first time you run any gpg command, a configuration directory and keyring will be created in your home directory. On my current Fedora and RHEL 8 systems, gpg2 is a symbolic link to gpg, which is the main binary. Now that version 1.0 is considered obsolete, users of that older version may need to use a binary called gpg1. 1 root root 3 Dec 6 04:02 /usr/bin/gpg2 -> gpgĮarly adopters of version 2.0 needed to use a gpg2 binary. The installed binary is likely named gpg, but because of the recent version changes, you may want to check that as well. Most Linux distributions already have GnuPG installed, and the current version will likely use GnuPG 2.0 by default. OpenPGP products can encrypt a file with a shared symmetric key or with asymmetric key pairs. The TLS certificates used with email or web-based drop boxes only protect the transfer on the wire. However, to make sure that only the intended recipient can open a file you send by email or drop into a shared folder, you need to encrypt that individual file. Local disk encryption protects data at rest for your powered-off laptop. OpenPGP programs such as GPG are used to sign and verify those packages. Digital signatures are used to ensure that you get an exact copy from the original packager and not a malicious version from a compromised site.
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