Hash collision Study guides, Class notes & Summaries

Chapter 2 – Cryptographic Tools TRUE/FALSE QUESTIONS: T F 1. Symmetric encryption is used primarily to provide confidentiality. T F 2. Two of the most important applications of public-key encryption are digital signatures and key management. T F 3. Cryptanalytic attacks try every possible key on a piece of ciphertext until an intelligible translation into plaintext is obtained. T F 4. The secret key is input to the encryption algorithm. T F 5. Triple DES tak...

WGU C839 - Introduction to Cryptography | 190 QUESTIONS | WITH COMPLETE SOLUTIONS. Serpent CORRECT ANSWERS: Symmetric Block Cipher Block Size: 128 bits Key Size: 128, 192, or 256 bits Rounds: 32 Network: Substitution-Permutation Tiny Encryption Algorithm (TEA) CORRECT ANSWERS: Symmetric Block Cipher Block Size: 64 bits Key Size: 128 bits Cryptography CORRECT ANSWERS: Deciphering secret writings, kryptos means hidden and grafo means write. Must not be readable by interlopers over secure...

WGU C839 Questions and Answers 100% Pass 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 Certificate revocation list (CRL) What is referenced to determine if a certificate has been revoked?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 users' computers to allow them to trust applicat...

Name all OSI layers - THE CORRECT ANSWER IS Application, Presentation, Session, Transport, Network, Data Link, Physical. Name all TCP/IP layers - THE CORRECT ANSWER IS Application, Transport, internet, Network Access. Name Four TCP head flags - THE CORRECT ANSWER IS ACK, FIN, SYN, URG, PSH, RST Which layer does HTTP protocl reside in the OSI model. - THE CORRECT ANSWER IS Layer 7, Application. Which layer does Ethernet reside in the OSI model. - THE CORRECT ANSWER IS Layer 2, Data li...

Key Stretching correct answer: -A cryptographic technique that makes a weak key stronger by increasing the time it takes to test each possible key. In key stretching, the original key is fed into an algorithm to produce an enhanced key, which should be at least 128 bits for effectiveness. -Systems that use key stretching include Pretty Good Privacy (PGP), GNU Privacy Guard (GPG), Wi-Fi Protected Access (WPA), and WPA2. Widely used password key stretching algorithms include Password-Based Key D...

Algorithm efficiency typically measured by the algorithm's computational complexity Computational complexity the amount of resources used by the algorithm. The most common resources considered are the runtime and memory usage. runtime complexity a function, T(N), that represents the number of constant time operations performed by the algorithm on an input of size N Space-complexity (of an algorithm) a function, S(N), that represents the number of fixed-size memory units...

WGU C949 - Data Structures And Algorithms QUESTIONS WITH COMPLETE SOLUTIONS Algorithm Describes a sequence of steps to solve a computational problem or perform a calculation. Computational Problem Specifies an input, a question about the input that can be answered using a computer, and the desired output. 00:20 01:45 Longest Common Substring An algorithm that determines the longest common substring that exists in two inputs strings. Binary Search An efficient algorithm...

Symmetric - ANSWER-Which encryption standard uses the same key to encrypt and decrypt messages? Skipjack - ANSWER-Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? X.509 v3 - ANSWER-What is the most commonly used format for certificates? Certificate revocation list (CRL) - ANSWER-What is referenced to determine if a certificate has been revoked? Sender's public key - ANSWER-What needs to be installed on end users' computers to allow them to tr...

COSC 2336 Final Exam Review; Questions and Answers updated 100% Already Graded A+ True or False? The Weighted Edge class extends Abstract Graph.Edge. - CORRECT ANSWER-True A Weighted Edge object contains the public data fields _______. - CORRECT ANSWER-u, v, weight The adjacent edge for each vertex in the Weighted Graph class is stored in _________. - CORRECT ANSWER-an Array List The Weighted Graph is a subtype of _________. - CORRECT ANSWER-Graph/Abstract Graph The add Ege (u, v...

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