File Extensions

Quick reference to the various file extension types.

.gpg

a binary GPG encrypted file

.asc

an armored GPG key file

.pub

public key (usually for OpenSSH)

.sig

a binary GPG signed document / detached signature

.csr

certificate signing request

.crt

security certificate file

.rar.gpg

popular method of encrypting a rar archive with winrar and then using Gpg4win to encrypt and password protect the archive.

.zip.gpg

a method of encrypting a .zip archive by zipping the contents with WinZip, and then encrypting / password protecting the archive with Gpg4win.

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