A new method to encrypt images based on triple encryption methods

Raghda Sattar Jabbar 1, *, Israa Shihab Ahmed 2 and Saadi Mohammed Saadi 3

1 Department of Quality Assurance and University Performance, Mustansiriyah University, Baghdad, Iraq.
2 Informatics Institute for Postgraduate studies, Iraqi Commission for Computers and Informatics, Baghdad, Iraq.
3 Ministry of Education, Baghdad, Iraq.
 
Research Article
Global Journal of Engineering and Technology Advances, 2023, 14(03), 121–130.
Article DOI: 10.30574/gjeta.2023.14.3.0053
Publication history: 
Received on 04 February 2023; revised on 20 March 2023; accepted on 23 March 2023
 
Abstract: 
Information security has become a significant concern, and the protection of images transmitted over the Internet is vital, which requires a high level of security. The information in these images has been used without permission and, therefore, will have serious consequences, and the images can be secured in several ways. Data encryption and decryption have recently received much attention and development. Strong encryption and decryption is required, which is incredibly difficult to crack. In this paper, an encryption environment consisting of triple encryption methods was used to create a new encryption system, which depends on several stages, including the step involving the process of creating the key using the RSA algorithm and then using this generated key with the same RSA algorithm to encrypt the image, in the second stage using a method "zig_zag" in order to encrypt the image again based on the encrypted pictures generated from the first stage, in the third stage, encrypt the image generated from the second stage using the 2D CAT method. As for the setting of retrieval of the original photos using triple decryption methods in a reverse way, the idea was returned without losing its data. The image quality was excellent.
 
Keywords: 
RSA Algorithm; 2D CAT MAP; Encryption; ZIG-ZAG; Decryption
 
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