Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Cipher MethodsThere are 2 methods of encrypting plaintext:• Bit stream method – every bit in the plaintext bit is transformed into a cipher bit one bit at a time.• Block cipher method – the message is divided into blocks (for example sets of 8-, 16- or32-bit blocks) and then each block of plaintext is transformed into an encrypted block of cipher bits by using an algorithm and a key.Bit stream method which is uses algorithm functions like XOR, while block cipher method can use substitution, transposition, XOR, etc.Substitution cipherSubstitution cipher substitutes one value for the other value. The following are the different types of substitution:• Monoalphabetic substitution – It uses one alphabet to substitute. Simple method but powerful if combines with other operations.• Polyalphabetic substitution – It is more advanced method which uses two or more alphabets.• Vigenère cipher – It is an advanced type of cipher which uses simple polyalphabetic code that is made up of 26 distinct cipher alphabets.Transposition cipherTransposition cipher rearranges values within the block to create ciphertext.Exclusive OR (XOR)It is a function of Boolean algebra where the two bits are compared to each other• If the two bits are identical, result is 0• If the two bits not identical, result is 1Vernam cipherThis is developed at AT&T that uses set of characters once per encryption process.Book (or Running Key) cipherThis method uses text in book as key to decrypt a message where ciphertext contains codes which represents page, line and word numbersHash FunctionsHash functions are mathematical algorithms that generate message summary or digest to confirm message identity and confirm no content has changed. Hash algorithms are publicly known functions that create hash value. Use of keys is not needed, but message authentication code (MAC) may be attached to a message. This method is mostly used in password verification systems to confirm identity of user.
The project will be involving a design and a report of which explain the simulation and how it functions. The aim of the project is to help the administrators and staff at the war
QUESTION (a) (i) Describe Phishing attacks. (ii) Distinguish between Phishing and Spear Phishing attacks. (b) Describe two instances where an attacker sniffing on a netwo
MegaCorp INC. is a large manufacturing firm that operates 5 factories in Dallas, 4 factories in Los Angeles, and 5 factories in Albany, New York. It operates a tightly connected
INTRODUCTION TO PHYSICAL SECURITY The Physical security addresses design, execution, and maintenance of countermeasures which protect physical resources of an organization. The
Question: (a) For the bit stream 010011, sketch the waveforms for each of the code indicated. Assume the following: the signal level for the previous bit for NRZI was a 1
Issue-Specific Security Policy (ISSP) The ISSP addresses specific areas of technology, needs frequent updates and having statement on organization’s position on a particular iss
W h a t do you understand by the terms security, network security and information security? How network security and information security are connected? Security can be def
WIRELESS SECURITY TOOLS An organization which spends its time securing wired network and leaves wireless networks to operate in any manner is opening itself up for security brea
CYCLIC REDUNDANCY CHECK (CRC) To activate a network system to check move error without increasing the amount of information in every packet another most successful method is m
Describe the salient features of the multimedia. Also explain the applications of it. Multimedia can be understood as follows: Multimedia is on the whole a media which makes
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd