One of the more important topics in application security is handling encryption of data. There are a group of API calls known as the Cryptography API built into the Windows operating system. Along with a new book by Richard Bondi, there is an open source set of COM wrappers for these API calls. These objects are much easier to use than the actual API sets. To download this code, click this link:
<a href="http://www.geocities.com/richardbondi/wcco1.0.zip">http://www.geocities.com/richardbondi/wcco1.0.zip</a>
For the documentation, you can click this link:
<a href="http://www.geocities.com/richardbondi/wcco_manual.zip">http://www.geocities.com/richardbondi/wcco_manual.zip</a>