ftp://ftp.pgp.net/pub/pgp/utils/emacs/
GNU-Emacs has everything else, so why not PGP as well?

• mailcrypt-3.4.tar.gz Current version, v3.4
  Seamless integration of PGP with GNU-Emacs' mail readers (Rmail, VM and mh) and its news reader (GNUS). Supports anonymous remailers; automatic fetching of needed keys from files, finger or key-servers; manipulation of arbitrary blocks of text; and more. Use either control-key commands or mouse and menus.
• mailcrypt-3.4.tar.gz.asc The author's signature on the above.
• mailcrypt-3.3.tar.gz Previous version, v3.3
• mailcrypt-3.3.tar.gz.asc The author's signature on the above.

• auto-pgp.tar.gz Version 1.04
  The author states: "This is a bunch of Elisp, Perl and C to allow you to integrate PGP2 (version 2.6[ui] or later) into your Emacs mailreader (and perhaps also your newsreader)."
• auto-pgp.tar.gz.sig The author's signature on the above.
• auto-pgp.README The README file for auto-pgp.

• pgp-el.tar.gz Version 197, August 1995
  Interface functions to connect MH and rmail to PGP. Able to use BBDB to keep track, within Emacs, of what keys are known on your PGP keyring, outside of Emacs.

• pgp.el1 A set of elisp functions for encryption, decryption, signatures etc.
• pgp.el2 Another, different, set of elisp functions for encryption, decryption, signatures etc.
• rat-pgp.el.gz Yet another set of elisp functions for encryption, decryption, signatures etc. Version 1.4

• pgpemacs.doc.gz Notes for implementors on how to call PGP from within Emacs.