A Chaos Based Image Encryption Using Tinkerbell Map Functions

From the past few decades new image encryption methods are being developed so as to increase the secrecy rate. Eavesdropping is the main concern for any type of cryptographic methods. Eavesdropping include various methods like cipher text attack. In order to overcome these problems, we have proposed a compelling chaos-based encryption algorithm particularly for pictures. In this we use a secret hexadecimal key which is used to generates initial conditions for Tinkerbell maps. These are further used to generate initial seeds. The main advantage of the proposed algorithm is that it produces different initial seeds for different rounds which increases the encryption security. Using these we have compared the performances of two different chaotic maps using NPCR, UACI and Correlation analysis.