Research on Computer Information Security Technology Based on DES Data Encryption Algorithm

In order to promote the research process of information security in the whole society, improve the safety factor of computer data communication, strengthen computer security management, the author proposes a computer data encryption strategy that combines the strong security of the 3DES encryption algorithm and the asymmetric encryption advantages of the RSA algorithm. Through the detailed analysis of DES encryption algorithm and 3DES encryption, creatively uses the RSA encryption algorithm to improve the single 3DES algorithm, consolidates the performance of the 3DES encryption algorithm to ensure data communication, and ensures the data integrity, better improve encryption performance. Experiments show that: The proposed encryption algorithm improves security performance by 10 times, and the response efficiency is only 1 ms away from other algorithms, compared with other algorithms, it has better encryption performance and is suitable for actual computer data communication scenarios. Conclusion: The encryption algorithm proposed by the author has achieved good results in terms of security performance and response efficiency, it is suitable for actual computer data security communication and can effectively improve computer security management.

Multi-core processors are increasingly popular because they yield higher performance, but they also present new challenges for hard real-time systems in that they make it much more difficult to estimate a task's worst-case execution time (WCET). Partitioned cache architecture is being used to ease the problem by providing an isolated execution environment for each thread. Although simple to implement and use, this method may be sub-optimal with respect to both energy consumption and performance since it prevents taking advantage of information shared across threads for both instructions and data. This work presents a new cache architecture termed SPACE (Semi-Partitioned CachE) that makes it possible to leverage information sharing, yielding in turn a tighter WCET. The SPACE architecture together with our new WCET algorithm can be used to maintain the predictability of the execution time of the parallel threads while reducing the overall energy consumption of the system. The new proposed cache architecture was implemented using Verilog and deployed on a Xilinx MicroBlaze multi-core design for testing, validation and measurements. The application level experiments were conducted using the Chronos tool for estimation and the Wattch/SimpleScalar simulator for execution. Using three real-time programs–a radar tracker, a DES encryption algorithm, and an FM radio–we showed that SPACE together with the enhanced WCET algorithm reduce the average system WCET of these applications by 31 percent and reduce the actual energy consumption by 18 percent in comparison with other cache architectures.

Microcontroller is often implemented in world manufacturing industry either part of an electronic product, such as a remote terminal unit. Remote terminal unit is an electronic device that responsible for retrieving data using sensors to a server, through cable network or a wireless network. The sensor used to read the data of temperature, altitude, and so on as required. As for the network that used as a medium for data delivery, can be via fibre-optic cable, GPRS modem, VSAT satellite, RF channels, and so on. Problems can occur when the data is sent as a plaintext (not secure). Such data can be read by unauthorized persons in various ways. So it needs to deploy a system of information security that can be implemented into 8-bit microcontroller. This research was conducted on the addition of the function signature, with the purpose of data integrity. Algorithms MD5 implement on 8-bit microcontroller-board, based on Arduino Uno kit. Then the next development stage of this research is, the data sent from a remote terminal units can be encrypted by the microcontroller, using either the algorithms AES, DES, 3DES or TwoFish encryption algorithm, among others. The result of this initial research, MD5 hash algorithm can be implemented in an 8-bit microcontroller with 100% accuracy. But it has some limitations on the issue among them, the data can be processed to a maximum of 15 (fifteen) characters, data input using keypad matrix 4×3, MD5 hash output is displayed on the LCD graphics 128×64 and can only enter data input capital letters only.

Now a days, as more and more information is communicated via computers, the need is to ensure that this information is secure and information can be secured by the means of encryption algorithms. Securing information refers to the methodologies that are implemented to protect sensitive information from misuse or disclosure as it causes risk. Encryption is the process of conglomerating or scrambling a message so that only the intended recipient can read it. With the fast progression of digital data exchange in electronic way, Information security is becoming much more important in data storage and transmission. With the evolution of human intelligence, the art of cryptography has become more complex in order to make information more secure. Various encryption algorithms are deployed to make information more secure. In this paper, a survey of RSA, DES and AES encryption algorithms are presented.

Although three types of the information security measures (technical, physical and managerial ones) are all together critical to maintaining information security in the organizations and should be implemented at the same time, this study aims at providing theoretical basis of establishing and implementing effective managerial security measures. The rationale behind this research objective is that it is very important to effectively perform the managerial security measures to achieve the target performance level of the technical and the physical security measures because main agents of practicing the information security measures in the organizations are staff members even though the technical and the physical ones are well constructed and implemented. In particular, this study intends to develop and propose the theoretical model applicable to providing the way of improving organizational members’ intention to use information security technologies since the very intention to use them is essential to effectively establishing and promoting managerial security measures. In order to achieve the objective of this study, the factors critical to influencing upon the intention to use information security technologies are derived through systematically reviewing related theories and previous studies, and then the research model and hypotheses are proposed by logically reasoning the casual relationship among the these factors. Also, the empirical analyses are performed by conducting the survey of the organization members of domestic large companies and analyzing the structural equation model by PLS (Partial Least Squares) method. The significant results of this study can contribute to expanding the research area of managerial information security and can be applied to suggesting the practical guidelines for effectively establishing and implementing the managerial security measures in various organizations.

S-box mainly plays the role of confusion in the encryption process as an important component. For the new encryption algorithm PRESENT proposed in 2007, S-box impacts on the security of the encryption algorithm directly. This paper briefly describes the process of PRESENT algorithm and proposes an improved S-box to solve the problem that the original PRESENT S-box has anti-fixed point. Then a random PRESENT encryption algorithm based on dynamic S-box is proposed. The dynamic multiple S-boxes technology is used to implement random PRESENT algorithm, to enhance the security of the cryptographic algorithm. Finally, the security analysis is done, and it suggests that dynamic S-box has a superior ability to resist differential attack and linear attack. By comparison to the diffusion rate of original PRESENT S-box, our dynamic S-box has better avalanche effect. With the rapid development of the Internet of Things, the radio frequency identification (RFID), wireless sensor network (WSN), and other new technologies go deep into all aspects of people's work and life. However, RFID and WSN are based on wireless network to transfer information. The transmission of information is not difficult to be obtained, interfered, and even destroyed by the attackers. So information security technology is widely used in protecting networks to enhance the safety of secret information. And the traditional symmetric encryption algorithm is often restricted by hardware, which cannot achieve good effects under the condition of limited hardware and power consumption. Therefore, lightweight cipher algorithm such as PRESENT(1) and LED(2) has gradually become the realistic choice to ensure the information security of Internet of Things. The lightweight block encryption algorithm PRESENT (1), put forward by Bogdanov in 2007, is carefully designed with area and power constraints uppermost in limited conditions. So the PRESENT algorithm still has high security in the application of limited space and power consumption, such as sensor network node. However, the permutation transformation of PRESENT algorithm is different with the column confusion of AES. It uses bit as the permutation function input unit while AES uses byte for permutation. The permutation layer of PRESENT encryption algorithm is a perfectly symmetrical structure and easy implemented. Because the structure of this kind of design has poor diffusibility, the PRESENT algorithm diffusively quality mainly depends on the diffusion properties of S-box. So S-box, as a nonlinear component in lightweight block encryption algorithm, affects the strength of the whole structure of the cipher. To strengthen DES by using existing hardware, an improved method of DES which uses the S-box related to a key is put forward in paper (4), and the researcher has demonstrated the safety of the improved method. Meanwhile, a new key related

The accelerating development of communication technologies has increased the speed, quality and ease of global communication. The evolution of networking technologies show that the Internet is the single integrated communication infrastructure. But as dependability on networks increases, new security vulnerabilities are developed every minute. To defend ourselves from cyberthreats, appropriate information security measures have to be developed. Earlier work on information security dates back to 4000 years with the development of cryptography. Firewalls, proxying and authentication systems constitute the next phase. The protection of copyrights and intellectual properties of digital entertainment contents and business transaction informations have also to be considered as serious issues. Compromising the security of routing infrastructure may lead to invasion of the goal of a communication system. The next generation embedded processors can implement the cryptographic engines at wire—speed. This paper presents a brief review of some of the key technologies used to secure the valuable information.

У статті представлено результати дослідження асоціативного поля концепту «інформаційна безпека». Теоретико-методологічною основою роботи стали новітні підходи до інформаційної безпеки як складової психологічної та інформаційної захищеності суспільства. Метою дослідження є виявлення асоціативного поля концепту «інформаційна безпека» за даними асоціативного експерименту з бакалаврами освітніх програм «Журналістика», «Міжнародна журналістика», «Реклама та зв’язки з громадськістю», «Видавнича справа та редагування», діяльність яких безпосередньо пов’язана з інформаційною сферою.Аналіз концепту «інформаційна безпека» як такого, що формується у свідомості споживача інформації через певне усвідомлення інформаційної та особистісної захищеності в площині соціальних комунікацій у мережі Інтернет, а також такого, що презентує мовну картину світу індивіда в інформаційну епоху, здійснювався на міждисциплінарному рівні.Зокрема, у дослідженні подано аналіз асоціативного поля концепту «інформаційна безпека» відповідно до отриманих логічних і граматичних реакцій ста вісімнадцяти респондентів. Аналіз за логічним компонентом виявив сім тематичних груп асоціацій: сфера захисту особистої інформації; сфера засобів масової інформації / соціальних мереж; сфера технологій; сфера державної інформаційної безпеки; соціальна сфера; психологічна захищеність; сфера захисту авторської інформації.Важливість поняття «інформаційна безпека» для цілої низки сфер інформаційної діяльності зумовлюється подальшим розвитком інформаційних технологій та технічних засобів обробки та захисту інформації, тому незаперечною є перспектива подальшого дослідження поняття в контексті виявлення рівня усвідомлення інформаційної безпеки як підґрунтя інформаційного та особистісного комфорту, а також для вивчення специфіки кореляції асоціативних полів концептів «інформаційна безпека», «інформаційна культура», «інформаційний комфорт», «інформаційний дискомфорт» тощо.

The security problem of the Internet of things (IOT) system has caused high attention in the information security (IS) industry. This paper studies the IS of the IOT based on perception and interaction technology. In the research, we put forward an IS protection method of the IOT based on the perception and interaction technology, and tested the method and the traditional IS protection method on the industrial IS attack and defense drill platform respectively. The test results show that the response time of the IOT IS measures based on perception and interaction technology proposed in this paper is 27 μs, while the traditional method needs 83 μs. From the perspective of false positive rate (FPR) and false negative rate (FNR), there are obvious differences between them. The FPR and FNR of the traditional method are 12.7% and 7.9% respectively, and the FPR and FNR of the method in this paper are 5.4% and 3.1%. The test results show that the IOT IS protection means based on perception and interaction technology can effectively ensure the IS of the IOT.

For modern society, The concealment and completeness of data is particularly important. To solve this problem, developed a mixed DES and SHA-1 encryption system based on VC + + environment. The system on the one hand by Triple DES and RSA algorithms for data encryption to hide, on the other hand, by the SHA-1 algorithm to validate the integrity of data, it has a wide range of practicality.

Information security in institutions of higher learning continues to be a concern. This is substantiated by the many security-related incidents that have occurred in these institutions over the past decade. In this study, we expound on the vulnerabilities and threats faced by higher education institutions and identify the information security measures that can be adopted to ensure safety. The study identifies insiders, poorly implemented information security frameworks, decentralized networks, Bring Your Own Device (BYOD), and a lack of investment in information security in HEI as the highest vulnerabilities. Accordingly, the study identifies social engineering attacks, distributed denial of service attacks, malware, and insider threats as potential threats and attacks on information in HEI. Furthermore, the findings of this study suggest multi-faceted information security measures encompassing technological, organizational, environmental, and human measures to ensure information security protection in HEI. The study identifies gaps for areas of further research.

Background: Workarounds are creative human actions that bypass a known problem in a system or a policy. Workarounds serve as temporary ‘fixes’ when effective but will often compromise the integrity of information systems in the long term, mainly when they are ineffective.Objectives: Forming part of behavioural studies in information systems security, the study aimed to investigate how workarounds influence the integrity of information security systems across businesses.Method: A quantitative approach that followed the positivism paradigm was employed. A survey strategy was used, and data were collected using closed-ended questionnaires targeting employees working in the Gauteng province of South Africa. The survey elicited responses from 207 professional participants. Analysis was done using Statistical Package for Social Sciences (SPSS) v29 software.Results: The study suggests that Individuality and Job characteristics are crucial predictors of workarounds, with the most notable findings pointing to a significant positive association between Workaround and Information security integrity. Crucially, highly individualistic employees are more likely to initiate workarounds, and in turn, this influences information security integrity.Conclusion: The work shows that employees with highly individualistic personalities are more likely to initiate workarounds and should be trained and supervised to mitigate this attribute, as this might be detrimental to information security integrity.Contribution: The study contributes theoretically by showing how workaround activities influence information security integrity. This study will assist enterprises in fortifying their information security measures.

One of information security management elements is information security awareness program. Usually, this programs only involve the employees within the organization. Some organizations also consider security awareness for some parties outside the organization like providers, vendors, and contractors. This paper add consumers as variable to be considered in information security awareness program as there are also some threats for organization through them. Information security awareness will be measured from user's knowledge and behavior of five information security focus areas in telecommunication, especially related with smartphone users as one segment of telecommunication provider. In other researches, information security measurement from outside an organization is focused in Internet use by end-user. In telecommunication industry, information security threats for consumers not only from Internet, but also by phone call or texting. This research used CFA for data analysis method. The result showed that the indicators of knowledge dimension is not good enough to measure dimensions of knowledge where most of them are not significant. Meanwhile, behavior dimension gave different result with high significant value for measuring security awareness level. Indicators of behaviour dimension is good for measuring dimension of behaviour because only one indicator that isn't significant.

Information security measures have become increasingly important not only for companies but also for individuals in recent years. For this reason, many information security measures have been taken. However, if information security is overly complicated, ICT users may get overwhelmed. Although research on security fatigue is being conducted, currently it is not enough. In particular, research from a psychological point of view is also needed. Examples of psychological measures include cognitive strategies that are classified as behavioral models. There are various cognitive strategies, but research into particular countermeasures against security fatigue has not been sufficiently explored. In this study, we propose new measures based on psychological viewpoints. These are security fatigue countermeasures that introduce a cognitive strategy. We conducted a questionnaire survey on cognitive strategies and security fatigue and then analyzed the results and classified them into 24 levels. We then proposed and evaluated new countermeasures against security fatigue on the basis of the analysis. The results demonstrate that it should be possible to plan appropriate information security measures in accordance with human behavior patterns.

Mis-spending on information security measures: Theory and experimental evidence