Koltuksuz, Ahmet HasanAkalp, Evren2014-07-222014-07-222008https://hdl.handle.net/11147/3986Thesis (Master)--Izmir Institute of Technology, Computer Engineering, Izmir, 2008Includes bibliographical references (leaves: 34)Text in English; Abstract: Turkish and Englishvii, 34 leavesMany people want to communicate and send their data securely, for this reason they use encryption methods. Symmetric cryptosystems are commonly used for securing data.They are fast and reliable. But there is a problem of exchanging keys in symmetric cryptosystems. Sender and receiver must share keys to get the plain text. In this thesis, different scenarios for key exchange protocols are developed. Solutions for securing communication to block man in the middle attack are also defined in this thesis.eninfo:eu-repo/semantics/openAccessQA76.9.A25 A313 2008Computer security--Computer programsDigital signaturesMaster Thesis