Chaos-Based Bit Planes Image Encryption

2010 ◽  
pp. 349-353
Author(s):  
Jiri Giesl ◽  
Tomas Podoba ◽  
Karel Vlcek
Keyword(s):  
Image Encryption ◽  
Bit Planes

scholarly journals Security Analysis and Improvement of an Image Encryption Cryptosystem Based on Bit Plane Extraction and Multi Chaos

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 505
Author(s):  
Shuqin Zhu ◽  
Congxu Zhu
Keyword(s):  
Image Encryption ◽  
Random Sequence ◽  
Security Analysis ◽  
Encryption Algorithm ◽  
Original Algorithm ◽  
Plane Extraction ◽  
Bit Plane ◽  
Bit Planes ◽  
And Diffusion ◽  
Improved Algorithm

This paper analyzes the security of image encryption systems based on bit plane extraction and multi chaos. It includes a bit-level permutation for high, 4-bit planes and bit-wise XOR diffusion, and finds that the key streams in the permutation and diffusion phases are independent of the plaintext image. Therefore, the equivalent diffusion key and the equivalent permutation key can be recovered by the chosen-plaintext attack method, in which only two special plaintext images and their corresponding cipher images are used. The effectiveness and feasibility of the proposed attack algorithm is verified by a MATLAB 2015b simulation. In the experiment, all the key streams in the original algorithm are cracked through two special plaintext images and their corresponding ciphertext images. In addition, an improved algorithm is proposed. In the improved algorithm, the generation of a random sequence is related to ciphertext, which makes the encryption algorithm have the encryption effect of a “one time pad”. The encryption effect of the improved algorithm is better than that of the original encryption algorithm in the aspects of information entropy, ciphertext correlation analysis and ciphertext sensitivity analysis.

scholarly journals Secure Sharing of Documents using Image Encryption and Key Image

2019 ◽  
Vol 8 (4) ◽  
pp. 9415-9419
Keyword(s):  
Image Encryption ◽  
Encryption And Decryption ◽  
Bit Planes

This Paper Presents Two Strategies For Encryption And Decryption Of Pictures Utilizing Xor Activity. The First Picture Is Encoded By The Key Picture Utilizing The Xor Activity And The Decoding Procedure Likewise Utilizes A Similar Key Picture With Xor Activity Is Done In The Primary Technique. In The Second Strategy One Of The Bit Planes, Rgb Technique, Filter Strategy For The Key Picture Is Utilized For Encoding The First Picture And Rearranging Is Accomplished For Getting The Scrambled Picture. This Technique Additionally Utilizes Xor Activity The Two Strategies Utilize A Picture Of A Similar Size As The Key For Scrambling The First Picture. Trials Have Demonstrated That The Two Calculations Are Appropriate For 2d Just As 3d Pictures. In The Matlab Condition, These Calculations Are Actualized And Tried On Different Pictures That Have Indicated Great Outcomes. For Scrambling Different Pictures These Strategies Are Likewise Utilized.

scholarly journals Fast and Efficient Image Encryption Algorithm Based on Modular Addition and SPD

Entropy ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 112 ◽  
Author(s):  
Khushbu Khalid Butt ◽  
Guohui Li ◽  
Sajid Khan ◽  
Sohaib Manzoor
Keyword(s):  
Image Encryption ◽  
Encryption Algorithm ◽  
Plain Text ◽  
Diffusion Technique ◽  
Permutation Methods ◽  
Plain Image ◽  
Block Based ◽  
Bit Planes ◽  
Differential Attacks ◽  
Image Encryption Algorithm

Bit-level and pixel-level methods are two classifications for image encryption, which describe the smallest processing elements manipulated in diffusion and permutation respectively. Most pixel-level permutation methods merely alter the positions of pixels, resulting in similar histograms for the original and permuted images. Bit-level permutation methods, however, have the ability to change the histogram of the image, but are usually not preferred due to their time-consuming nature, which is owed to bit-level computation, unlike that of other permutation techniques. In this paper, we introduce a new image encryption algorithm which uses binary bit-plane scrambling and an SPD diffusion technique for the bit-planes of a plain image, based on a card game trick. Integer values of the hexadecimal key SHA-512 are also used, along with the adaptive block-based modular addition of pixels to encrypt the images. To prove the first-rate encryption performance of our proposed algorithm, security analyses are provided in this paper. Simulations and other results confirmed the robustness of the proposed image encryption algorithm against many well-known attacks; in particular, brute-force attacks, known/chosen plain text attacks, occlusion attacks, differential attacks, and gray value difference attacks, among others.

scholarly journals Security Analysis of Bit plane Level Image Encryption Schemes

2021 ◽  
Vol 71 (2) ◽  
pp. 209-221
Author(s):  
Ram Ratan ◽  
Arvind Yadav
Keyword(s):  
Image Encryption ◽  
Data Security ◽  
Security Analysis ◽  
Image Data ◽  
Encryption Scheme ◽  
Mobile Environments ◽  
Least Significant Bit ◽  
Encryption Schemes ◽  
Bit Plane ◽  
Bit Planes

A selective bit-plane encryption scheme was proposed for securing the transmission of image data in mobile environments with a claim that it provides a high security viz. the encryption of the four most significant bit-planes is sufficient for a high image data security. This paper presents the security analysis of the said encryption scheme and reports new important results. We perform the security analysis of the bit-level encryption by considering the normal images and their histogram equalised enhanced images. We consider different bit-plane aspects to analyse the security of the image encryption, and show that the encryption of the four most significant bit-planes is not adequate. The contents of the images can be obtained even when all the bit-planes except one least significant bit-plane are encrypted in the histogram equalised images as shown in the results. The bit-plane level security analysis seems very useful for the analysis of the bit-plane level image encryption schemes.

Secure Chaotic Image Encryption Based on Multi-Point Row-Column-Crossover Operation

2021 ◽  
pp. 286-328
Author(s):  
K. Abhimanyu Kumar Patro ◽  
Mukesh Drolia ◽  
Akash Deep Yadav ◽  
Bibhudendra Acharya
Keyword(s):  
Image Encryption ◽  
Chaotic Maps ◽  
Image Data ◽  
Cyber Attack ◽  
One Dimensional ◽  
Key Space ◽  
Chaotic Image Encryption ◽  
Bit Planes ◽  
Pixel Permutation ◽  
And Diffusion

In this present era, where everything is getting digitalized, information or data in any form, important to an organization or individual, are at a greater risk of being attacked under acts, commonly known as cyber-attack. Hence, a proper and more efficient cryptosystem is the prime need of the hour to secure the data (especially the image data). This chapter proposes an efficient multi-point crossover operation-based chaotic image encryption system to secure images. The multi-point crossover operation is performed on both the rows and columns of bit-planes in the images. The improved one-dimensional chaotic maps are then used to perform pixel-permutation and diffusion operations. The main advantage of this technique is the use of multi-point crossover operation in bit-levels. The multi-point crossover operation not only increases the security of cipher images but also increases the key space of the algorithm. The outcomes and analyses of various parameters show the best performance of the algorithm in image encryption and different common attacks.

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