Chaotic synchronization since its advent in 1990 [1], possess immense potential in cryptography. The identical or complete synchronization is the coupling scheme used in the interacting systems that will emerge with time. Here the Lorenz systems of equations are utilized for synchronization of chaotic systems. Keys can be obtained after the two chaotic systems are completely synchronized, by linking two Lorenz systems that are chaotic in nature. These keys form the basis for generating hash values using the message digest. This paper emphasizes on the formulation of a new hash function based on chaotic systems using Lorenz equations in order to generate collision resistant hash values.

Lorenz system, Chaos system, Cryptography, Coupling scheme.

Medini H K, Mahfooz Sheikh, Murthy DHR, Sathyanarayana SV and GK Patra.Identical chaotic synchronization for hash generation. ACCENTS Transactions on Information Security. 2017;2(5):16-21. DOI:10.19101/TIS.2017.25002