Comparison of Image Encryption Techniques Using Chaotic Maps and Conventional Cryptographic Techniques
Aanchal Varshney, Pratyusha Routh, G. Sujatha · 2024
In past few years, there has been a great deal of research being done on chaos-based cryptosystems. Chaos-based cryptosystems like Arnold cats map can add security when employed with traditional public key cryptosystems like RSA or El-Gamal, despite the fact that these techniques are not standardized like AES, DES, RSA, etc. Although chaotic-map-based encryption techniques are frequently recommended for picture or video encryption because of their computational efficiency, standard encryption algorithms like DES, AES and RSA have traditionally been the preferred option. The encryption methods like chaos-based picture encryption and conventional cryptographic techniques like AES, DES and RSA are surveyed in this work. There is discussion of the great advancements in image encryption. The comparison is done on the basis of quality of image before and after encryption and decryption using various methods like Peak Signal to Noise Ratio (PSNR), Structural Similarity Index (SSIM) and Mean Squared Error (MSE). The PSNR, MSE, and SSIM values of chaotic map-based cryptography don't perform well when compared to traditional methods like RSA, DES, and AES. Also the time complexities and the key sizes of all the algorithms have been compared. The conventional techniques consistently show nearly perfect values, highlighting their stronger security and reliability in data protection and encryption. In contrast, the chaotic map-based approaches fall short in terms of these metrics, indicating that the traditional methods are more effective in ensuring robust security.