AustinTech

An ongoing list of mathematic related sites that I’ve found to be worthy of keeping in my bookmarks.

• Cut-The-Knot
• Eric Weisstein’s World of Mathematics
• Mathematics Help Central
• http://www.mathpuzzle.com
• http://www.primepuzzles.net
• http://www.mathpages.com
• The Math Forum
• Problem of the Week

Here’s a quick little class I wrote to encrypt text files from a web-server using GnuPG. I’ll post updates to it as the code improves, but this was a simple and useful start that helped me encrypt messages and then send them via email from the webserver.

Some uses could be:

• Encrypt and send credit card information via email without storing the numbers on the server
• Encrypt and send sales order information
• Encrypt and send membership information
• Encrypt and send database and server statististics
• …basically anything you don’t want others to see!

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