Encryption basics - slightly off topic

I suppose this is not directly AS/400 related but there seems to have been
enough discussion lately to warrant this question.

Does anyone have an idea of a book that covers encryption basics (PGP, SSL,
SSH, VPN, Public Key, Private Key, HTTPS, Telnet, FTP, etc.)?  There is of
course some relevance to the AS/400 but this is more just to understand
encryption basics.

It seems like everytime I work on this my outside connection uses something
different.  I have one vendor who uses SMTP and PKZIP files with passwords.
Another one uses PGP as a default but only uses SSL on an exception basis,
etc., etc., etc................and then there was the discussion on SSH.

Michael Crump
Saint-Gobain Containers
1509 S. Macedonia Ave.
Muncie, IN  47302
(765)741-7696
(765)741-7012 f
(800)428-8642

mailto:mike.crump@saint-gobain.com