Paper Details

The Digital data is widely transferred over the internet due to which it may get effected by the interventionof intruders, data tampering, unauthorized access etc. Thus to fulfill the need of data security the cryptography comes tothe existence and accepted worldwide. Cryptography is a mechanism to encrypt the data in non-readable format by usinga key which is only known to the sender and receiver of the information. This study develops a new encryption basedcryptography approach for securing the information of the images. The proposed approach is a combination of twoprominent security methods i.e. Diffie Hellman key generation mechanism, Huffman Encoding technique and XORoperation is also used to compressed data and diffie permuted key to achieve the encrypted file. This mechanism providestwo-level security to the images by firstly compressing the image and then encrypting it by using XOR operation. In orderto approve the proficiency of the work the present technique is compared with the chaotic-ANN encryption technique interms of NCPR, UACI, correlation, PSNR, MSE and Entropy. The evaluated NCPR of present method is 100, UACIis52.526 and Entropy is 7.9948.

Simrat Kaur, Rupinder Kaur, “Cryptography of Images Using Diffie Hellman Algorithm”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 11, pp. 218-226, November 2017.