Efficient Text Encryption and Hiding with Double-Random Phase-Encoding

Abstract

In this paper, a double-random phase-encoding technique-based text encryption and hiding method is proposed. First, the secret text is transformed into a 2-dimensional array and the higher bits of the elements in the transformed array are used to store the bit stream of the secret text, while the lower bits are filled with specific values. Then, the transformed array is encoded with double-random phase-encoding technique. Finally, the encoded array is superimposed on an expanded host image to obtain the image embedded with hidden data. The performance of the proposed technique, including the hiding capacity, the recovery accuracy of the secret text, and the quality of the image embedded with hidden data, is tested via analytical modeling and test data stream. Experimental results show that the secret text can be recovered either accurately or almost accurately, while maintaining the quality of the host image embedded with hidden data by properly selecting the method of transforming the secret text into an array and the superimposition coefficient. By using optical information processing techniques, the proposed method has been found to significantly improve the security of text information transmission, while ensuring hiding capacity at a prescribed level.

Fast Video Encryption Using the H.264 Error Propagation Property for Smart Mobile Devices

“…Another solution is to encrypt image areas and encode the modified image, e.g., a permutation of positions of the pixels in the privacy-endangering areas has been proposed in [ 6 , 7 , 8 , 9 , 10 ] based on the chaos cryptography theory [ 11 ], which can serve to protect video contents. These methods have exploited the concept of scrambling image pixels with a secret key.…”

“…In transmitting video data over Video Sensor Networks (VSNs), the video data can be sent to and from portable devices such as smartphones [ 1 , 2 , 3 , 4 , 5 ]. Frequently, multimedia data delivery raises issues around content ownership and privacy; therefore, protecting content is important in multimedia applications [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Since the size of multimedia data is large, efficient encryption methods for protecting content, while also satisfying real-time requirements, are necessary [ 3 , 4 , 5 ].…”

A Multispectral Photon-Counting Double Random Phase Encoding Scheme for Image Authentication

“…Optical and digital information security systems [ 28 – 35 ] based on the double random phase encoding (DRPE) [ 25 – 30 , 30 – 32 ] technique has played a predominant role in information security. According to the DRPE principle, the primary image f ( x , y ), which represents the spatial coordinates of a two-dimensional signal or image, is encrypted into stationary white noise data using two random phase masks.…”

Quantum Dots‐Functionalized Encryption Camera for Text Image Security Protection

“…However, the risk of information leakage is inevitably increased due to the abused usage of image processing technology, in particular, for text image with official information or private database. [2] It is very necessary to encrypt the text image for security protection. [3,4] To our knowledge, there are three typical ways to achieve image encryption, including fluorescent material-based encryption, [5][6][7][8] computer cryptology, [9][10][11][12][13] and optical encryption, [14][15][16][17][18][19][20][21] while these techniques hardly satisfy the high-speed encryption requirements of information acquisition and online communication.…”