Science of cryptology and key distribution schemes

Communication and telecommunucation; it includes facts from past to present. In communication, people have applied various encryption processes so that the information they transfer to the other party cannot be accesded by third parties or malicious people. Undoubtedly, the importance of mathematical expressions is very great on the basis of encryption processes used in the transfer of information. In the light of previous scientific studies on this subject, the subject was approached from a different angle. In the first part , general information about the field of cryptography, which is the science of encryption, was given , in the second part, mathematical expressions were briefly mentioned, and in the third part, information security elements and cryptosystems were mentioned. In the last part, key distribution schemes and protocols, which constitute the main theme of our thesis, were mentioned.