scholarly journals Information hiding using stochastic diffusion for the covert transmission of encrypted images

2010 ◽  
Author(s):  
J. Blackledge
Keyword(s):  
Information Hiding ◽  
Stochastic Diffusion ◽  
Encrypted Images

scholarly journals A New Reversible Date-Hiding Algorithm for Encrypted Images

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Laicheng Cao ◽  
Hao Zhou
Keyword(s):  
Prediction Model ◽  
Information Hiding ◽  
Reversible Watermarking ◽  
Encryption Scheme ◽  
Histogram Shifting ◽  
Embedding Capacity ◽  
Encrypted Image ◽  
Effective Combination ◽  
Encrypted Images ◽  
Difference Histogram

In order to effectively increase embedding capacity and completely extract the watermarking information in information hiding of encrypted images, a new reversible watermarking embedding algorithm based on rhombus prediction model and difference histogram shifting ideas is proposed. Firstly, the images are pretreated according to rhombus prediction model. Then, the watermarking information is embedded in encrypted images by effective combination of homomorphism encryption scheme and reversible watermarking techniques. Finally, the watermarking information is completely extracted and the images are recovered based on computed difference histogram from left to right and from top to bottom. So, the efficiency and reversibility are ensured when watermarking information is embedded in encrypted image. Experiment results show that the proposed algorithm is simple and easy to realize, the embedding capacity is effectively increased, watermarking information is completely reversible, and the image can be recovered with no distortion.

scholarly journals Reversible Information Hiding Algorithm Based on Multikey Encryption

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Zhaohui Li ◽  
Yiqing Wang ◽  
Zhi Wang ◽  
Zheli Liu ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Spatial Correlation ◽  
Data Hiding ◽  
Information Hiding ◽  
Reversible Data Hiding ◽  
Rate Distortion ◽  
Selection Method ◽  
Original Image ◽  
Embedding Capacity ◽  
Reversible Information Hiding ◽  
Encrypted Images

This paper proposes a scheme of reversible data hiding in encrypted images based on multikey encryption. There are only two parties that are involved in this framework, including the content owner and the recipient. The content owner encrypts the original image with a key set which is composed by a selection method according to the additional message. Thus, the image can be encrypted and embedded at the same time. Additional message can be extracted given that the recipient side could perform decryption strategy by exploiting spatial correlation; then, original image can be recovered without any loss. Compare with other current information hiding mechanism, the proposed approach provides higher embedding capacity and is also able to perfectly reconstruct the original image as well as the embedded message. Rate distortion of the proposed method outperforms the previously published ones.

Implementation Color-Images Cryptography Using RSA Algorithm

2017 ◽  
Vol 7 (11) ◽  
pp. 181
Author(s):  
Ali Saleh Al Najjar
Keyword(s):  
Information Security ◽  
Image Encryption ◽  
Color Images ◽  
Public Key ◽  
Open Channels ◽  
Image Security ◽  
Rsa Algorithm ◽  
The Media ◽  
Encrypted Images ◽  
Difficult Issue

Absolute protection is a difficult issue to maintain the confidentiality of images through their transmission over open channels such as internet or networks and is a major concern in the media, so image Cryptography becomes an area of attraction and interest of research in the field of information security. The paper will offer proposed system that provides a special kinds of image Encryption image security, Cryptography using RSA algorithm for encrypted images by HEX function to extract HEX Code and using RSA public key algorithm, to generate cipher image text. This approach provides high security and it will be suitable for secured transmission of images over the networks or Internet.

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