Digital Image Encryption Techniques: Article Review

Abstract

In this age of the multi-media, images have an important impact on communication. When users upload images over an insecure communication network, total security is a difficult problem to address in order to maintain image confidentiality. Also, encryption is a technique for keeping images secret. This study gives a basic introduction to cryptography, as well as a concise overview regarding the many image encryption algorithms' elemental security criteria. This paper includes an overview of several image encryption approaches as well as a comparison of discrete image encoding techniques, before coming to a conclusion and recommending future research.

Differential Distribution Table implementation DDT survey

“…where the first derivative at point a, 𝐷 𝑎 (1) (or 𝐷 𝑎 for simplicity) is defined by 𝑓(x + a) − 𝑓(x), with:…”

“…The rapid development of information technology accompanied by internet spread all over the world led to arising of several issued including data security. The cryptosystems are used to maintain the security of the transferred data via internet to avoid unauthorized access and data hacking [ 1 ]. Many cryptosystems had been presented in both of its types: Symmetric and Asymmetric ciphers.…”

Reversible De-identification of Specific Regions in Biomedical Images and Secured Storage by Randomized Joint Encryption

“…To get this, the division operation by in ( 4) is replaced by the multiplication factor which is the modular inverse of with respect to p. The resulting G is, (5) In (5), the size of G is L×L, and all the mathematical operations are carried out using modular algebra in the finite field Zp. Here, it can be verified that, (6) That is, the modular inverse of G is G itself. That means G is involutory and not well suited as a cryptographic key from the security aspect.…”

“…Various types of chaotic maps used in image encryption are enumerated systematically. In [6], the authors have reviewed several image encryption and discrete image encoding techniques and the associated future scope in those fields. In [7], image encryption methods based on chaotic maps, neural networks, AES (Advanced Encryption Standard), DCT (direct Cosine Transform), XOR, GA (Genetic Algorithm), and LSB (Least Significant Bit) are reviewed.…”

“…The image encryption process can be full or selective. In full image encryption [3][4][5][6][7], the entire image is encrypted, while in Selective Encryption (SE), only certain specific parts of the image are encrypted. On many occasions, explicitly specified regions of the given image are selected and obscured (blurred) due to personal privacy, societal or legal requirements, censorship guidelines, or to hide embedded textual information and so on [8].…”