An Integrated Image Encryption Scheme Based on Elliptic Curve

Abstract

Due to the extensive demand for digital images across all fields, the security of multimedia data over insecure networks is a challenging task. The majority of the existing modern encryption schemes are merely developed that ensure the confidentiality of the image data. This manuscript presents a new image encryption scheme that ensures confidentiality, user authentications, and secure key sharing among the communicating parties. Initially, the users share a secret parameter using Diffie-Hellman over the elliptic curve and pass it through SHA-256. Afterwards, the proposed scheme uses the first 128-bits for the confidentiality of the data, while the remaining 128-bits are for authentication. In the encryption algorithm, the confusion module is achieved by affine power affine transformation. At the same time, the diffusion module is attained through highly nonlinear sequences, which are generated through the elliptic curve. Experimental testing and the latest available security tools are used to verify the effectiveness of the proposed algorithm. The simulation findings and the comparison of the proposed scheme with the existing image encryption techniques reveal that the suggested scheme offers a sufficient degree of security. Furthermore, the outcome of the simulation results divulges several advantages of the proposed scheme, including a large key space, resistance to differential attacks, high efficiency, and strong statistical performance.

A Self-Adaptive Image Encryption Scheme Based on Chaos and Gravitation Model

“…Information entropy is a quantitative index of uncertainty in data information, which is often used to evaluate the randomness of images [38]. The formula for calculating information entropy is as follows:…”

“…Plaintext images will inevitably suffer from malicious cutting in the channel transmission process, resulting in data loss [38]. To verify the robustness of the algorithm for data cropping, data of 1/2, 1/4, 1/8, and 1/16 of the Lena encrypted image were cropped respectively, and the decryption diagram was obtained, as shown in Fig.…”

Triple Color Image Encryption Using Hybrid Digital/Optical Scheme Supported by High-Order Chaos

“…Recently, there has been increasing interest in implementing gray-and color-image encryption using optical technology to achieve high-speed operation [2][3] [4]. The Optical Encryption (OE) process treats the image directly as a twodimensional (2D) object and therefore, it does not use image digitization as done in the Digital Encryption (DE) counterpart [5] [6]. Further, OE methods have some characteristic features due to the used optical devices [7] [8].…”

A Novel Conservative Chaotic System Involved in Hyperbolic Functions and Its Application to Design an Efficient Colour Image Encryption Scheme

“…Many image encryption techniques have been suggested and developed by researchers, such as Arnold transformation-based [1][2][3], quantum system-based [4][5][6], compression sensing-based [7][8][9], cellular automata-based [10][11][12], DNA computing-based [13][14][15], elliptic curves-based [16][17][18], and chaotic system-based [19][20][21][22][23] approaches. The approach of digital image encryption based on chaotic systems is considered to be more effective than other approaches due to their ability to improve unpredictability, which makes encryption more resistant to attacks.…”