.NET & Cryptology

The point of this work is to show how to solve certain cryptographic problems in Microsoft .Net Framework 3.5. The work is divided into three parts. The first is an overview of basic classes and methods which can be used to solve particular cryptographic tasks. This part shows how to use these classes and also is an overview of the most common cryptological terminology also used in this work. The second part shows how to use abstract classes prepared in the framework for implementing an application interface, which unifies usage of all cryptographic transformations under .net. The third part is about deciding on quality of certain implemented cryptographic algorithm. Implementing speed testing application for block ciphers and hash function and it also contains references of basic attacks. Implementations of speed testing program, two block ciphers (Rijndael and Skipjack), all in c#, are listed in Appendix