Abstract:
"When communication starts over the network, there are two parties involve. In order to start
communication they need to have a secure communication. In order to establish a
communication people use Diffie Hellman key change protocol. When using this protocol the
both parties will come up with a common secret key. But this key only know those two parties.
By using this security key they can encrypt their messages and continue the communication.
The real world problem is, this mechanism has a vulnerability to man in the middle attack. This
paper is conducting to prevent this vulnerability.
As explain in previous paragraph, there is a vulnerability in Diffie Hellman key exchange to
the man in the middle attack. After conducting literature review and get the deep understanding
author has discovered lack of authentication caused this vulnerability. Based on this conclusion
author has suggested the conceptual framework which has an authentication functionality in
the key exchange level. As a solution, in the initial handshake first person creates hash code
based on the information on first handshake. Then second person will store this hash table and
continues. Once first person gets the packet, he will check the new hash and his initially stored
hash value. If it is same, then communication conclude as secure. If not it is possible that there
is a man in the middle.
This conceptual framework shred with selected evaluators in order to evaluate the conceptual
framework. The agreed on this solution with good approach and also there are some
improvements need to be done. Those improvements and answers will discuss in detail
evaluation chapter"
