New method for fingerprint images encryption using DNA sequence and chaotic tent map

Abstract

The security of data transfer by the web and network is very important, especially in medicine. So encryption is a challenging and important task in information security. Recently, several algorithms have been presented for image encryption and security based on different methods, specifically based on encryption by DNA sequencing and chaotic systems. In this paper, a hybrid algorithm is presented using the tent chaotic mapping and DNA sequencing techniques. In this method first, the original image and the chaotic mapping are encrypted separately using DNA sequencing. Then, the logical XOR operator is applied to them and the encrypted image is produced using chaotic systems. Finally the average entropy for fingerprint images after encryption was obtained 7.9882. The results obtained from the conducted experiments and computer simulations indicate that the proposed method performs the encryption have a good result. The proposed system has also been evaluated against common attacks and has shown good results.