Cryptography and Steganography: teaching experience

In this article we present overview of work with cryptography and steganography techniques, which refers to information hiding and providing secrecy. Article contains cryptography and steganography teaching results and experiences. First chapter contains information about steganography and its history. Next chapter provides information about hiding methods. We present there the most known, simple, computer-based steganographic techniques which our students mastered during studies. Third chapter includes information about few laboratory projects and results to the cryptography and steganography point. This chapter makes a review of several interesting steganography and cryptography approaches, which were implemented and become a subject of meticulous studies aimed at the development of new software.