A Proposal Video Encryption Using Light Stream Algorithm

2021 ◽  
Vol 39 (1B) ◽  
pp. 184-196
Author(s):  
Attaa R. Alawi ◽  
Nidaa F. Hassan
Keyword(s):  
Feature Detection ◽  
Evaluation Process ◽  
Experimental Results ◽  
Encryption Algorithm ◽  
Video Encryption ◽  
Quality Factors ◽  
Digital Videos ◽  
Key Points ◽  
Speed Up ◽  
Encryption Algorithms

Video encrypting is one technique to protect digital videos, it used to avoid unwanted interference and viewing of the transmitted videos. In this paper, a new selective video cryptography algorithm is suggested using light stream algorithm. As it known video size is large in size and it consume time in the encryption process, ChaCha a light encryption algorithm has been used to reduce the encryption time, encryption is done by Xoring frames of video with the key generated from ChaCha algorithm, it produced an acceptable results from robustness point view, but still encryption process consumed time, thus to speed up this process, feature detection operator (FAST) is used to encrypt key points result from FAST operator, in addition key points from this is increased to optimized between speed and robustness of proposed algorithm. In evaluation process, some of measuring quality factors MSE, PSNR, Correlation, NPCR, UACI and entropy are specified for evaluating and comparing between two suggested encryption algorithms which gave good result in encryption process (ChaCha and ChaCha with FAST Enhancement). Experimental results have discovered that the current projected has less encrypting time and better encrypting influence.

scholarly journals JLVEA: Lightweight Real-Time Video Stream Encryption Algorithm for Internet of Things

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3627 ◽  
Author(s):  
Junhyeok Yun ◽  
Mihui Kim
Keyword(s):  
Internet Of Things ◽  
Packet Loss ◽  
Encryption Algorithm ◽  
Memory Usage ◽  
Video Encryption ◽  
Data Loss ◽  
Iot Security ◽  
Encryption Algorithms ◽  
Channel Separation ◽  
Color Composition

Along with the recent growth of Internet of Things (IoT) security camera market, there have been a number of personal information leakage incidents from security attacks targeting such cameras. Therefore, a permutation-based video encryption algorithm was proposed to secure video streams in low-performance processors such as IoT security cameras. However, existing permutation-based video encryption algorithms are vulnerable to known-plaintext attacks since they use the same permutation list for every frame. Moreover, situation deduction based on the color composition is possible. In this paper, we propose a new permutation-based video encryption algorithm that updates the permutation list for every frame using a crypto secure pseudo-random number generator without significantly increasing memory usage. By doing so, the algorithm becomes robust to known-plaintext attacks, which has been a common problem with existing permutation-based video encryption algorithms. In addition, color channel separation can prevent attackers from deducing situations through color composition. Pre-compression encryption is applied to make the algorithm robust to data loss because of packet loss. We implement the proposed algorithm and conduct an experiment to show its performance in terms of probability of data loss because of packet loss, encryption speed, and memory usage.

An Image Encryption Algorithm Based on Random Walk and Hyperchaotic Systems

2020 ◽  
Vol 30 (04) ◽  
pp. 2050060 ◽  
Author(s):  
Cong Xu ◽  
Jingru Sun ◽  
Chunhua Wang
Keyword(s):  
Random Walk ◽  
Image Encryption ◽  
Experimental Results ◽  
Encryption Algorithm ◽  
Original Image ◽  
Chosen Plaintext Attack ◽  
Random Walk Method ◽  
Encryption Algorithms ◽  
Hyperchaotic Systems ◽  
Image Encryption Algorithm

In this paper, we propose an image encryption algorithm based on random walk and two hyperchaotic systems. The random walk method is adopted to scramble the position of pixels within a block. Furthermore, the permutation operation between blocks is presented to enhance the scramble effect. Thus, high correlation among pixels of original image is broken by permutation. Moreover, the chosen plaintext attack is used to test the anti-attack ability of the proposed algorithm. By analyzing experimental results and comparing with other image encryption algorithms, we show that the proposed algorithm has better performance and higher security.

A New Video Encryption Algorithm Based on the Complex Chaotic System

2014 ◽  
Vol 556-562 ◽  
pp. 3376-3379 ◽  
Author(s):  
Ling Hao Li ◽  
Xiao Jun Tong
Keyword(s):  
Chaotic System ◽  
Random Sequence ◽  
Experimental Results ◽  
Encryption Algorithm ◽  
Video Encryption ◽  
High Security ◽  
Chaotic Model ◽  
New Type ◽  
Complex Chaotic System

In this article,a new type of video encryption system based on complex chaotic model was proposed. The algorithm selects the more complex the chaos model,generates pseudo random sequence to used encrypt the key data of encryption process,the experimental results show that this encryption algorithm has high security,fast encryption speed.

PERFORMANCE ANALYSIS OF ENHANCED VIDEO ENCRYPTION ALGORITHM

2020 ◽  
Vol 5 (2) ◽  
pp. 67-75
Author(s):  
A.A. Adenowo ◽  
L.F. Oderinu
Keyword(s):  
Low Cost ◽  
Security And Privacy ◽  
Encryption Algorithm ◽  
Original Video ◽  
Video Encryption ◽  
Digital Videos ◽  
Unauthorized Access ◽  
Encryption Decryption ◽  
Privacy Issues

The prevalence of internet, as well as low-cost mobile computing devices, makes video the preferred option for information archival and transmission. Also, the geometric growth in the generation and use of digital videos is massive and challenging to determine. Meanwhile, this growth has come with security and privacy issues such as unauthorized access, piracy, hacking and other digital attack every year. Restricting unauthorized access measure can be adopted to protect multimedia information, but does not guarantee the physical security of information. Cryptography which is a better and more secure approach is therefore required. Thus, this paper presents performance evaluation of Enhanced Novel Selective Video Encryption Algorithm, an AES-based video encryption algorithm. Properties of I frame are used randomly to generate the encryption key and a jump factor is used to determine which of the remaining P and B frame is selected for encryption. The results show that the more frames selected for encryption/decryption, the higher the encryption/decryption time and the higher the encrypted video size. Also, the PSNR value of this algorithm is around 40dB which indicates that the quality of the decrypted video is as high as that of the original video. The performance of this algorithm does not diminish with increase in size of video and number of frames. Hence, this algorithm is scalable, fast and highly secure for video encryption.

scholarly journals AES AND RSA-BASED HYBRID ALGORITHMS FOR MESSAGE ENCRYPTION & DECRYPTION

2021 ◽  
Vol 9 (1) ◽  
pp. 273-279
Author(s):  
Mr. Abhishek Guru, Dr Asha Ambhaikar
Keyword(s):  
Data Protection ◽  
Hybrid Algorithms ◽  
Experimental Results ◽  
Encryption Algorithm ◽  
Hybrid Encryption ◽  
Encryption Algorithms ◽  
Business Data ◽  
Encryption Decryption

File encryption is an easy means of securing personal or business data protection. The RSA and AES representative encryption algorithms are not capable of satisfying the criteria of file encryption reliability and security when used separately. A hybrid encryption algorithm mixing AES and RSA algorithms is suggested in this paper to overcome the above issues in order to solve file encryption performance and security problems. The experimental results suggest that the RSA and AES hybrid encryption algorithm can not only encrypt files, but also provide the benefits of efficiency and protection of the algorithm.

scholarly journals Safety Analysis of Reverse Algorithm Encryption in Databases

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Branko Latinović ◽  
Zoran Ž. Avramović ◽  
Mаhir Zаjmović
Keyword(s):  
Safety Analysis ◽  
Data Encryption ◽  
Experimental Results ◽  
Encryption Algorithm ◽  
Encryption Algorithms

Encryption provides security for databases. This paper provides a new encryption algorithm ,”Reverse Encryption Algorithm (REА)“. Furthermore, designing a REA algorithm has improved data encryption security. Safe and successful proposed encryption algorithm REA is evaluated and compared with the most common encryption algorithms. The designing of the REA algorithm also improves the security of data encryption. Additionally, the safety and the performance of the suggested encryption algorithm REА represents evaluation and enhancement with the most common encryption algorithms. Experimental results show that the proposed encryption algorithm REA surpasses other encryption algorithms in performance and security of databases. All in all, the proposed encryption algorithm REA achieves a balance between security and efficiency.

Research on Video Encryption and Privacy Protection in Cloud Monitoring System Based on H.264

2019 ◽  
Vol 12 ◽  
Author(s):  
Qingtao Wu ◽  
Zaihui Cao
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Video Data ◽  
Encryption Algorithm ◽  
Management Tool ◽  
Video Encryption ◽  
Wireless Multimedia ◽  
Monitoring Technology ◽  
Security Issues ◽  
Cloud Monitoring

: Cloud monitoring technology is an important maintenance and management tool for cloud platforms.Cloud monitoring system is a kind of network monitoring service, monitoring technology and monitoring platform based on Internet. At present, the monitoring system is changed from the local monitoring to cloud monitoring, with the flexibility and convenience improved, but also exposed more security issues. Cloud video may be intercepted or changed in the transmission process. Most of the existing encryption algorithms have defects in real-time and security. Aiming at the current security problems of cloud video surveillance, this paper proposes a new video encryption algorithm based on H.264 standard. By using the advanced FMO mechanism, the related macro blocks can be driven into different Slice. The encryption algorithm proposed in this paper can encrypt the whole video content by encrypting the FMO sub images. The method has high real-time performance, and the encryption process can be executed in parallel with the coding process. The algorithm can also be combined with traditional scrambling algorithm, further improve the video encryption effect. The algorithm selects the encrypted part of the video data, which reducing the amount of data to be encrypted. Thus reducing the computational complexity of the encryption system, with faster encryption speed, improve real-time and security, suitable for transfer through mobile multimedia and wireless multimedia network.

scholarly journals Thermochemical Heat Storage in a Lab-Scale Indirectly Operated CaO/Ca(OH)2 Reactor—Numerical Modeling and Model Validation through Inverse Parameter Estimation

2021 ◽  
Vol 11 (2) ◽  
pp. 682
Author(s):  
Gabriele Seitz ◽  
Farid Mohammadi ◽  
Holger Class
Keyword(s):  
Numerical Model ◽  
Gas Flow ◽  
Reaction Rate ◽  
Heat Storage ◽  
Bulk Material ◽  
Fixed Bed ◽  
Experimental Results ◽  
Fixed Bed Reactor ◽  
Thermochemical Heat Storage ◽  
Speed Up

Calcium oxide/Calcium hydroxide can be utilized as a reaction system for thermochemical heat storage. It features a high storage capacity, is cheap, and does not involve major environmental concerns. Operationally, different fixed-bed reactor concepts can be distinguished; direct reactor are characterized by gas flow through the reactive bulk material, while in indirect reactors, the heat-carrying gas flow is separated from the bulk material. This study puts a focus on the indirectly operated fixed-bed reactor setup. The fluxes of the reaction fluid and the heat-carrying flow are decoupled in order to overcome limitations due to heat conduction in the reactive bulk material. The fixed bed represents a porous medium where Darcy-type flow conditions can be assumed. Here, a numerical model for such a reactor concept is presented, which has been implemented in the software DuMux. An attempt to calibrate and validate it with experimental results from the literature is discussed in detail. This allows for the identification of a deficient insulation of the experimental setup. Accordingly, heat-loss mechanisms are included in the model. However, it can be shown that heat losses alone are not sufficient to explain the experimental results. It is evident that another effect plays a role here. Using Bayesian inference, this effect is identified as the reaction rate decreasing with progressing conversion of reactive material. The calibrated model reveals that more heat is lost over the reactor surface than transported in the heat transfer channel, which causes a considerable speed-up of the discharge reaction. An observed deceleration of the reaction rate at progressed conversion is attributed to the presence of agglomerates of the bulk material in the fixed bed. This retardation is represented phenomenologically by mofifying the reaction kinetics. After the calibration, the model is validated with a second set of experimental results. To speed up the calculations for the calibration, the numerical model is replaced by a surrogate model based on Polynomial Chaos Expansion and Principal Component Analysis.

scholarly journals The vibro-impact capsule system in millimetre scale: numerical optimisation and experimental verification

Meccanica ◽  
2020 ◽  
Vol 55 (10) ◽  
pp. 1885-1902
Author(s):  
Yang Liu ◽  
Joseph Páez Chávez ◽  
Jiajia Zhang ◽  
Jiyuan Tian ◽  
Bingyong Guo ◽  
...  
Keyword(s):  
Dynamical System ◽  
Mathematical Formulation ◽  
Path Following ◽  
Piecewise Smooth ◽  
Experimental Results ◽  
Scale Down ◽  
Speed Up ◽  
Small Bowel Endoscopy ◽  
Numerical Optimisation ◽  
Smooth Dynamical System

Abstract The vibro-impact capsule system has been studied extensively in the past decade because of its research challenges as a piecewise-smooth dynamical system and broad applications in engineering and healthcare technologies. This paper reports our team’s first attempt to scale down the prototype of the vibro-impact capsule to millimetre size, which is 26 mm in length and 11 mm in diameter, aiming for small-bowel endoscopy. Firstly, an existing mathematical model of the prototype and its mathematical formulation as a piecewise-smooth dynamical system are reviewed in order to carry out numerical optimisation for the prototype by means of path-following techniques. Our numerical analysis shows that the prototype can achieve a high progression speed up to 14.4 mm/s while avoiding the collision between the inner mass and the capsule which could lead to less propulsive force on the capsule so causing less discomfort on the patient. Secondly, the experimental rig and procedure for testing the prototype are introduced, and some preliminary experimental results are presented. Finally, experimental results are compared with the numerical results to validate the optimisation as well as the feasibility of the vibro-impact technique for the potential of a controllable endoscopic procedure.

scholarly journals Efficient feature-based motion estimation in neurosurgery using non-maximum suppression

2018 ◽  
Vol 4 (1) ◽  
pp. 555-558 ◽  
Author(s):  
Fang Chen ◽  
Jan Müller ◽  
Jens Müller ◽  
Ronald Tetzlaff
Keyword(s):  
Motion Estimation ◽  
Thermal Imaging ◽  
Motion Correction ◽  
Processing Time ◽  
Feature Detection ◽  
Detection Efficiency ◽  
Adaptive Method ◽  
Time Performance ◽  
Key Points ◽  
Feature Based

AbstractIn this contribution we propose a feature-based method for motion estimation and correction in intraoperative thermal imaging during brain surgery. The motion is estimated from co-registered white-light images in order to perform a robust motion correction on the thermographic data. To ensure real-time performance of an intraoperative application, we optimise the processing time which essentially depends on the number of key points found by our algorithm. For this purpose we evaluate the effect of applying an non-maximum suppression (NMS) to improve the feature detection efficiency. Furthermore we propose an adaptive method to determine the size of the suppression area, resulting in a trade-off between accuracy and processing time.

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