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We explore the use of two chaotic systems (Bernoulli shift map and Zizag map) coupled with deoxyribonucleic acid coding in an encryption scheme for medical images in this paper. The scheme consists of two main phases: Chaotic key generation and DNA diffusion. Firstly, the message digest algorithm 5 hash function is performed on the plain medical image and the hash value used in combination with the...
The security of medical images has attracted much attention recently, especially when these images are hosted by third party cloud service providers and therefore must be sent through the communication networks. A key challenge in the cloud computing paradigm is the design of efficient security schemes that help address the issues of confidentiality, integrity and authentication. Consequently, we...
With the popularity of mobile terminals in our life, Including education, entertainment, industry and other fields. People have been thinking about it, initially, People want enterprise-database for the purpose of processing large amounts of data to be used directly embedded devices, however, because their resources are extremely limited. So this idea had to be abandoned, only use embedded database...
In this paper, we analysed the status of WLAN security. According to the weakness of the most common encryption protocols WEP and WPA, an attack algorithm named Predictive Judgment adapted to cloud computing environment was given. With comparing the attacking processes on cloud computing platform and traditional platform, we proposed that the attacks supported by cloud computing have become serious...
This paper proposes an algorithm of image digital watermarking based on chaotic encryption and SVD. In this algorithm, cover image is transformed into 8 × 8 blocks using DCT and we can get a transform matrix. SVD is used on the matrix. At the same time, the watermark image is encrypted using chaos sequence. Then the singular values of cover image are used to add watermark value to embed watermark...
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