A Modified Approach to KERBEROS Authentication Protocol using Improved BLOWFISH Scheme
T. Santha, G. R. Damodaran · 2012
An authentication mechanism is the most basic requirement for developing a highly secure environment. Authentication itself means confirming the truth of data. Since the information stored on the computer which is transmitted over internet need to ensure security and measuring safety to information, so without our awareness, the intruders can attempt to obtain and gain control over the system to access secure confidential information by using most common method like DoS Attack, Backdoor, Trojan horse, Packet Sniffing, etc. So there must not be any compromise in securing our resources. Hence Cryptography is arguably the most important tool a security expert has [1]; Cryptography only allows the solution for different security zones including Authentication Mechanism, Access Control, Data Confidentiality, Data Integrity, and Non-Repudiation. In this paper we have strongly focused to improve Kerberos authentication protocol to be more secure and unbeatable [2]; as we have also make use of the improved Blowfish encryption algorithm which is a block cipher with fixed 64bit block size and key size varies from 32 – 448 bits which will enhanced more security to the Kerberos network realm.