Affine cipher Study guides, Class notes & Summaries

WGU Course C839 - Intro to Cryptography Questions Correctly Answered 2023 GRADED A What type of encryption uses different keys to encrypt and decrypt the message? A Symmetric B Private key C Secure D Asymmetric - Answer D The most widely used asymmetric encryption algorithm is what? A RSA B Vigenere C DES D Caesar Cipher - Answer A Original, unencrypted information is referred to as ____. A text B plaintext C cleantext D ciphertext - Answer B Which of the following is NOT...

WGU C839 - Introduction to Cryptography Real Exam With Complete Solutions Symmetric Block Cipher Block Size: 64 bits Key Size: 128 bits ---------- Correct Answer -------- IDEA (International Data Encryption Algorithm) Symmetric Block Cipher Block Size: 64 bit blocks Key Size: 40 to 128 bits Two versions: 128 and 256 ---------- Correct Answer -------- CAST 128/256 Symmetric Block Cipher Block Size: 128 bits Key Size: 128, 192, or 256 bits Rounds: 32 Network: Substitution-Permut...

EC-Council Certified Encryption Specialist (ECES)Solved 2023

WGU C839: Intro to Cryptography Module 1. Questions and answers, VERIFIED. Most primitive of cryptographic algorithms, substitutes one character of cipher text for each character of plain text. Includes Caesar Cipher Atbash Cipher Affine Cipher Rot13 Cipher - -Mono-Alphabet Substitution First used by Julius Caesar Every letter is shifted a fixed number of spaces to the left or right the alphabet. - -Caesar Cipher Hebrew Code substitutes the first letter of the alphabet f...

WGU C839 - Introduction to Cryptography Real Exam With Complete Solutions Symmetric Block Cipher Block Size: 64 bits Key Size: 128 bits ---------- Correct Answer -------- IDEA (International Data Encryption Algorithm) Symmetric Block Cipher Block Size: 64 bit blocks Key Size: 40 to 128 bits Two versions: 128 and 256 ---------- Correct Answer -------- CAST 128/256 Symmetric Block Cipher Block Size: 128 bits Key Size: 128, 192, or 256 bits Rounds: 32 Network: Substitution-Permut...

WGU C839 Intro to Cryptography Exam 2023 Questions and Answers (Verified Answers) Cryptography - (Correct Answer) The science of altering communication so that it cannot be understood without having the key. cipher - (Correct Answer) The algorithm(s) needed to encrypt and decrypt a message. Mono-alphabet substitution - (Correct Answer) Substitute one character of cipher text for each character of plain text. Caesar cipher - (Correct Answer) Every letter is shifted a fixed number of spa...

Finding any method to decrypt the message that is more efficient that simple brute force attempts. - Breaking Ciphers Simply trying every possible key to decrypt a message - Brute Force Using other techniques to attempt to derive the key, can be used to test the efficacy of a cryptographic algorithm. Frequently used to test hash algorithms for collisions. - Cryptanalysis The most basic tool for breaking classic ciphers like the Caesar and Vigenere Ciphers. Analysis the frequency of certain...

WGU C839 - Introduction to Cryptography Real Exam With Complete Solutions Symmetric Block Cipher Block Size: 64 bits Key Size: 128 bits ---------- Correct Answer -------- IDEA (International Data Encryption Algorithm) Symmetric Block Cipher Block Size: 64 bit blocks Key Size: 40 to 128 bits Two versions: 128 and 256 ---------- Correct Answer -------- CAST 128/256 Symmetric Block Cipher Block Size: 128 bits Key Size: 128, 192, or 256 bits Rounds: 32 Network: Substitution-Permut...

WGU C839 - Introduction to Cryptography Real Exam With Complete Solutions Symmetric Block Cipher Block Size: 64 bits Key Size: 128 bits ---------- Correct Answer -------- IDEA (International Data Encryption Algorithm) Symmetric Block Cipher Block Size: 64 bit blocks Key Size: 40 to 128 bits Two versions: 128 and 256 ---------- Correct Answer -------- CAST 128/256 Symmetric Block Cipher Block Size: 128 bits Key Size: 128, 192, or 256 bits Rounds: 32 Network: Substitution-Permut...

WGU - C839, Top Questions and answers, 100% Accurate, VERIFIED. What produces the same ciphertext from identical plaintext? - -Electronic Codebook (ECB) Vulnerability of DES - -Key length is too short ________ includes a provision for the decryption key in escrow. - -Skipijack __________ combines hashing, data compression, symmetric key, and PKI functions. - -PGP Kerchoffs Principle - -Keys must be absolutely secured. Hashing functions make birthday attacks possible because________...