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Computer Communication Fundamentals

[Summary]Course: CS402: Computer Communications and Networks The Internet has become one of the most important components of our life. We browse the Web, check e-mails, make VoIP phone calls, and have video conferences via computers. All of these applications

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Course: CS402: Computer Communications and Networks

The Internet has become one of the most important components of our life. We browse the Web, check e-mails, make VoIP phone calls, and have video conferences via computers. All of these applications are made possible by networking computers together, and this complex network of computers is usually referred to as the Internet. This course is designed to give you a clear understanding of how networks, from in-home local area networks, or LANS, to the massive and global Internet, are built and how they allow us to use computers to share information and communicate with one another.

Data Communication & Computer Network

Data Communication & Computer Network

Data communications refers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data. The physical connection between networked computing devices is established using either cable media or wireless media. The best-known computer network is the Internet.

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

Spritz is a stream cipher proposed by Rivest and Schuldt at the rump session of CRYPTO 2014. It is intended to be a replacement of the popular RC4 stream cipher. In this paper we propose distinguishing attacks on the full Spritz, based on a short-term bias in the first two bytes of a keystream and a long-term bias in the first two bytes of every cycle of N keystream bytes, where N is the size of the internal permutation. Our attacks are able to distinguish a keystream of the full Spritz from a random sequence with samples of first two bytes produced by 244.8 multiple key-IV pairs or 260.8 keystream bytes produced by a single key-IV pair. These biases are also useful in the event of plaintext recovery in a broadcast attack. In the second part of the paper, we look at a state recovery attack on Spritz, in a special situation when the cipher enters a class of weak states. We determine the probability of encountering such a state, and demonstrate a state recovery algorithm that betters the 21400 step algorithm of Ankele et al. at Latincrypt 2015. Finally we propose a simple fix that removes the bias in the first two keystream bytes. The countermeasure requires only one additional memory access and hence does not diminish software performance substantially, and in fact the loss in software speed is only around 1.5%.

Course: CS402: Computer Communications and Networks, Topic: Unit 1: Networking Fundamentals

When you think of networking, what is the first word that comes to mind? If you answered "Internet," you are correct. The Internet is an example of a massive computer network. Computer networks make it possible for one device to communicate with another device. Another example of a computer network is the local area network, or LAN. If you can access all of the desktops, laptops, wireless devices, and printers in your workplace, college, or home, you have a LAN.

Fundamentals of communication and networking

Computer Communication Fundamentals

Fundamentals of Communication Systems: John G. Proakis, Masoud Salehi: 9780131471351: Amazon.com: Books

This book is intended as a senior level undergraduate textbook on communication systems for Electrical Engineering majors. Its primary objective is to introduce the basic techniques used in modern communication systems and to provide fundamental tools and methodologies used in the analysis and design of these systems. Although the book is mainly written as an undergraduate level textbook, it can be equally be useful to the practicing engineer, or as a self study tool.

Fundamentals of Computers

computer book

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