Symmetric-key algorithm

& 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…

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…

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…

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…

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…

I became interested with an Information Security Analyst because my father is one. Every take your child to work day I would wake up early with my dad and run to his car excited to go to his office for the day. The building is a plain, brown brick building, but every time I saw it, I instantly got excited. Walking into the office everyone knew my name, I would always wave at everyone I saw. The secretary always gave me a lollipop and called me her “Little bundle of sunlight”. I would then go…

“It definitely sharpened my interest in language, the way people used language, slang words, speech patterns. There 's a big advantage to being the outsider” (1). This is a quote by Amy Heckerling, and it explains how speech patterns often go unnoticed by people of a certain group. A person with a southern accent believes that their accent is the normal, and a person with a Boston accent does not think they have one. Clive Thompson’s article “He and She; What’s the Real Difference?” explains an…

The ability to understand programming and all of its algorithms will grant anybody the power to keep up with technology. This is why elementary schools need computer science classes integrated into their curriculum. Teaching young children how to program will evolve the world in new ways by allowing these individuals to create new applications and technology. Since there are not any computer science related courses offered in elementary schools, they are restricted from the opportunity to learn…

In the article, “Grace Murray Hopper – Programming Pioneer”, author V. Rajaraman summarizes the life and accomplishments of Grace Murray Hopper, a woman who is credited for several major computer and technology developments. Rajaraman goes into extensive detail about Hopper’s early life, such as how Hopper focused heavily on her education in order to receive a PhD in Mathematics at Yale University which soon lead her to become a math professor at Vassar College. Rajaraman also mentions how…

paper is like designing the functionality and architecture of the code. Employing various ways to support an argument is like adapting known algorithms to suit specific purposes. And proofreading and revising a paper is like testing, debugging, and improving the code. Last summer at Cornell, I led weekly supplementary seminars for the Fundamental Programming Concepts course. Initially, I included many questions about the ins and outs of language-specific syntax and semantics in the worksheet.…