CSIA 400 – 5f1 How to use cryptool for RC4

This video was created for students in my college Cryptology course. (At tonysako.com) In this video you will learn about an open source tool called Cryptool that can be used to encrypt and decrypt using several different ciphers. You will learn how to use Cryptool to encrypt data using RC4, and how to decrypt messages with a known key (or salt). You will also learn how to attempt to crack messages with very short keys.