Browsing by Author "Mahmud, Sabbir"

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IMPLEMENTATION AND PERFORMANCE ANALYSIS OF ELLIPTIC CURVE DIGITAL SIGNATURE ALGORITHM
(Daffodil International University, 2007-01-01) Nabi, Mohammad Noor; Mahmud, Sabbir; Rahman, M Lutfar
In this paper we present a novel method for obtaining fast software implementation of the Elliptic Curve Digital Signature Algorithm in the finite field GF(p) with an arbitrary prime modulus p of arbitrary length. The most important feature of the method is that it avoids bit-level operations which are slow on microprocessors and performs word-level operations which are significantly faster. The algorithms used in the implementation perform word-level operations, trading them off for bit-level operations and thus resulting in much higher speeds. We provide the timing results of our implementations on a 2.8 GHz Pentium 4 processor, supporting our claim that ECDSA is appropriate for constrained environments.
Internship Report on IT Network & Cyber Security at Walton Hi-Tech Industries Ltd.
(Department of Business and Technology Management(BTM), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh, 2022-05-30) Mahmud, Sabbir
The following report is a recap of my three-month internship at Walton Hi-Tech Industries Ltd. This internship program has given me valuable insight into a variety of security systems, specifically security policies & procedures, which are used to secure the application. Walton is one of the biggest electronics manufacturer companies in Bangladesh which manufactured so many electrical products such as automobiles, home appliances, laptop, mobile etc. It has also one of the largest research and product development labs among all over the world. According to the surveys, Walton has established itself as a trusted name for clients in an ever-growing business by focusing on customer comfort and entertainment, as well as the ideal price-to-quality ratio of their innovative, attractive, and high-quality items, which are comparatively less expensive than competitors. This means that Walton not only ensures high-quality product delivery, but it also employs more than 60 apps and websites in order to reduce the communication gap between employees, customers, and sellers to improve trading. In 2022, website hacking will be a prevalent threat. It means that if a website isn't secure, hackers can use it to infect visitors with malware. Because there are hundreds of different forms of malware and thousands of ways to infect a website, the vast majority of which are carried out by automated hacking tools. Walton relies on several websites to assist consumers with their business, so they must be all safe. As a result, Walton is currently working on developing ISO 27001:2013 to raise its security system to one of the best in Bangladesh. ISO 27001 is a worldwide recognized standard that helps companies establish, implement, and maintain an effective Information Security Management System (Rahman, 2004). Recent hacking attacks have emphasized the need for improved data security to safeguard sensitive company and client data. ISO 27001: 2013 aims to ensure that suitable and balanced security measures are implemented to protect data resources and build confidence among key stakeholders. So, in this internship report, based on my educational credentials and work experience obtained from Walton over the previous three months, I evaluate Walton's history, as well as Walton's new security system, various hazards, and what efforts Walton has undertaken to tackle these challenges.