A key agreement protocol is a key establishment technique which enables two or
more communicating parities to agree on a key or exchange information over an open
communication channel. Due to the complicated mathematical structure and
deterministic nature of the fractal functions that meet the cryptographic requirements,
and taking the security threats and privacy issues into consideration, a new key
agreement protocol based on Iterated Function Systems (IFS) is proposed to provide
techniques and tools that may be useful for developing cryptographic protocols. The
proposed protocol is a generalization of the Diffie Hellman (DH) protocol. It is
designed to overcome some of the drawbacks of several previously proposed key
agreement protocols. The experimental results and security analysis shows that the
proposed scheme provides an essential security requirement, where their efficiency
makes it easier to be applied alone or hybrid with other security methods.
Keywords: Key Agreement, Iterated Function System (IFS); Attractor; Hutchinson
Operator W, Diffie Hellman (DH).
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