WGU C839 Introduction to Cryptography (C839)

WGU C839- test Questions and answers, 100% Accurate. Rated A+ What is the block and key size for Blowfish - -- 64 bit block - 32-448 bit key What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? - -Steganography What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? - -Steganography Which block cipher below uses a block size of 128 bits and key...

C839 Introduction to Cryptography. Exam Questions and answers, VERIFIED. Cryptography - -The science of altering communication so that it cannot be understood without having the key. cipher - -The algorithm(s) needed to encrypt and decrypt a message. Mono-alphabet substitution - -Substitute one character of cipher text for each character of plain text. Caesar cipher - -Every letter is shifted a fixed number of spaces to the left or the right in the alphabet. Ciphertext - -The re...

Introduction to Cryptography - C839. Exam Questions and answers. VERIFIED. - Cipher - Key - Algorithm - -- The algorithm(s) needed to encrypt and decrypt a message. - The random bits used in encrypting a message. - The mathematical process used to alter a message and read it unintelligible by any but the intended party Stream Cipher - -Uses a keystream generator and encrypts a message one bit at a time, usually implemented in hardware. Popular when data comes in long streams (such a...

WGU C839, Exam Review. Questions with preceding accurate answers, rated A+ Symmetric - -Which encryption standard uses the same key to encrypt and decrypt messages? Skipjack - -Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? X.509 v3 - -What is the most commonly used format for certificates? Certificate revocation list (CRL) - -What is referenced to determine if a certificate has been revoked?

Introduction to Cryptography - C839. Exam Questions and answers, rated A+ Cipher Disk - -A physical device used to encrypt Polyalphabetic; each time you turn the disk, you use a new cipher Vinere Cipher - -Invented by Giovan Battista Bellaso in 1553 Encrypts text by using a series of different Caeser Ciphers based on a keyword Playfair Cipher - -Invented by Charles Wheatstone in 1854 Encrypts two letters instead of one Frequency Analysis - -Examining ciphertext looking for...

WGU C839 Flash Cards for OA, Exam Questions and answers. Rated A+. VERIFIED. DES - -64 Bit Block - 56 Bit Key - 16 Rounds AES - -128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds BlowFish - -64 Bit Block - 32 thru 448 Bit Key - 16 Rounds TwoFish - -128 Bit Block - 1 thru 256 Bit Key - 16 Rounds Serpent - -128 Bit Block 128, 192, 256 Bit Key - 32 Rounds SkipJack - -64 Bit Block - 80 Bit Key - 32 Rounds IDEA - -64 Bit Block - 128 Bit Key - 8.5 Rounds Symmetric Blo...

WGU C839, Exam Questions and answers. VERIFIED. RATED A+ Symmetric - -Which encryption standard uses the same key to encrypt and decrypt messages? Skipjack - -Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? X.509 v3 - -What is the most commonly used format for certificates? Certificate revocation list (CRL) - -What is referenced to determine if a certificate has been revoked? Sender's public key - -What needs to be installed on end use...

C839 - Pre-Assessment: Introduction to Cryptography. Exam Questions and answers, rated A+ Which encryption standard uses the same key to encrypt and decrypt messages? - Symmetric Key Encryption Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? - SKIPJACK What is the most commonly used format for certificates? - X.509 v3 *Version 3

WGU Course C839 - Intro to Cryptography, Exam Questions and answers, rated A+ What type of encryption uses different keys to encrypt and decrypt the message? A Symmetric B Private key C Secure D Asymmetric - -D

Introduction to Cryptography - C839. Exam Questions and answers, rated A+ Cryptography (or cryptology); derived from word kryptós which means "hidden," and the verb gráfo, which means "write." It is the study of message secrecy. The process or skill of communicating in or deciphering secret writings or ciphers Cesar Cipher (mono-Alphabet Substitution) You can choose to shift any number of letters, either left or right. If you choose to shift two to of a single alphabet substi...