Gpg4win is a installer package for Windows (2000/XP/2003/Vista) with computer programs and handbooks for EMail and file encryption. Both relevant cryptography standards are supported, OpenPGP and S/MIME (the latter is in progress and currently works with GnuPG2 and Claws Mail). Gpg4win and the software included with Gpg4win are Free Software.
A. Institute. IEEE Computer Society Press, 1109 Spring Street, Suite 300, Silver Spring, MD 20910, USA, (Sep 17, 1993)Two volumes. IEEE Std 1003.2-1992 (includes IEEE Std 1003.2a-1992).
Approved September 17, 1992, IEEE Standards Board. Approved April
5, 1993, American National Standards Institute. The primary purpose
of this standard is to define a standard interface and environment
for application programs that require the services of a `shell' command
language interpreter and a set of common utility programs..