# Symmetric-key algorithm

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& networking (level 7) Assessment W1: Cryptography Prepared By: Karanjot Singh Deol Table of Contents 1 Task 1: Cryptography- their methods to do and how it used in IT environment: 1 Cryptography 1 Methods of doing cryptography: 2 Symmetric key Encryption 2 Asymmetric Keyencryption 3 How to secure our encrypted data: 4 Integrity: 4 Overview of cryptography: 6 Conclusion: 6 Task 2: Applications of cryptography in Electronic Transactions and VPNs 7 Cryptography in VPNs 7 Secure Electronic Transactions 9 Task 3: Windows and their authentication methods from NT to Latest Windows Environment? 10 Authentication: 10 Types…

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Abstract— the focus in this paper is on the symmetric encryption. There are some basic information about this type of cryptography will be reviewed. Then, symmetric cryptography advantages and problems will be covered. After that, comparison on several symmetric algorithms are discussed. These algorithms are DES, Triple DES, AES, RC2, RC4, RC6, and Blowfish. Keywords—Cryptography, Symmetric Encryption, Encryption, Decryption, DES, Triple DES, AES, RC2, RC4, RC6, Blowfish. I. INTRODUCTION…

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Only one single key is saved in the nodes ' memory and once enforced in the network, there is no requirement for a node to perform key exchange or key discovery, however, all the nodes in communication coverage area can transfer messages employing the key which they already share. On the other side, this strategy suffers a serious disadvantage that adjustment of a single node would lead compromise of the whole network by the shared key. Hence it fails in offering the basic secure need of a…

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1.2. Previous Work The first symmetric key schemes for keyword search over encrypted data are proposed in [27]. The authors consider a setting in which the sender of file encrypts each word of a file separately. Goh [15] proposed a method for secure index using Bloom filters and introduced the notion of semantic security against adaptive chosen-keyword attacks. Determining whether a file contains a keyword can be done securely in constant time. In the public key setting, Boneh et al.[5] first…

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Abstract— The P vs NP problem is still one of the greatest unsolved problem in Mathematics and computer Science. This survey paper is intended to explain what P vs NP problem is and what are the advances that have been made to solve this problem and How closer are we to solve this problem and what is its status i.e. Is P = NP? Keywords— Polynomial, Non - Determinsitic, P, NP, NPC Reductions, Reducibility, Reductions, certificate, complexity I. INTRODUCTION What is P vs NP? Why it is important to…

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Thesis: Offering computer science classes to all students as early as kindergarten should be encouraged, because the school’s best interest is within the skill sets our children will need for future use. I. Importance of putting coding classes in schools curriculum. A. The need for this skill set and benefits from learning. 1. Jobs are in high demand for people with education in coding. Additionally computer science jobs are high paying 2. Coding teaches many other valuable techniques such as…

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The Secret Of A Successful Job There is one of the most important ways to make your job better, and doing a special work. The way to do a successful job is to love what you do. Successful people love what they work on. For example: Steve Jobs is one of powerful people, he always says, “The only way to do great work is to love what you do”. In my own experience, I studied Computer Science for two years at University of Kuwait. Then, I worked at a petroleum company called KJO, which is one…

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Presenting Needs and Initial Intake: Our holistic work with community members begins with our Direct Service Network. Upon arrival at the Panacea Institute for Equality in Education, families are greeted with a “pre-screen” process to determine their presenting need. At this initial entry point, education challenges supersede all other family challenges. The support staff responsible for the prescreening process will determine the severity of the educational challenge and will determine how…

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“If you think you are worth what you know, you are very wrong. Your knowledge today does not have much value beyond a couple of years. Your value is what you can learn and how easily you can adapt to the changes this profession brings so often.” – Jose M. Aguilar The aforementioned quote summarizes my intent behind the pursuit of master 's degree from a prestigious university such as yours. An invigorating career in the field of Computer Science has always been my dream. With an…

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Movie: The Imitation Game Internet The imitation game is a movie about Alan Turing and the Enigma-code. He is a mathematical. The movie takes place in the WO2. The Germans had decrypted all their massages so that the American and the British army can’t understand and read the massages. Alan Turing should cracking the code. Under time pressure, he makes a machine who can crack the codes. After two years it finely worked. Now it was possible to read every massages. The Germans…

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