PGP has a kind of authentication called MDC which is kind of a MAC. Changes to ciphertext are detected. The metadata leakage is not good from a privacy standpo

PGP has a kind of authentication called MDC which is kind of a MAC. Changes to ciphertext are detected. The metadata leakage is not good from a privacy standpoint, but brings about much more important security benefits that are mentioned in the post. Using Gopass will hide metadata.