Hashing algorithm - Study guides, Class notes & Summaries

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 -Answer-X.509 v3 What is referenced to determine if a certificate has been revoked?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' ...

ITN 266 EXAM QUESTIONS WITH 100% CORRECT ANSWERS Why is a secure keying phase necessary? - Answer- The keying phase is used for sending keys or secrets securely. Some communication methods are susceptible to key stealing so this occurs after authentication. What two things should you always do when sending secured messages - Answer- Encrypt and sign What is Hashing? - Answer- Hashing is irreversible SHA - Secure Hashing Algorithm MD5 hashing procedure produces 128-bit SHA-1 160 bits,...

When reviewing an organization's logical access security to its remote systems, which of the following would be of GREATEST concern to an IS auditor? - ANSWERSUnencrypted passwords are used. When evaluating the technical aspects of logical security, unencrypted passwords represent the greatest risk because it would be assumed that remote access would be over an untrusted network where passwords could be discovered. Which of the following would be the BEST access control procedure? - ANS...

What is the block and output size of SHA1? 1 512-bit blocks with an output of 128 bits 2 512-bit blocks with an output of 160 bits 3 1024-bit blocks with an output of 256 bits 4 1088-bit blocks with an output of 256 bits - Answer- 2 The SHA1 (Secure Hash Algorithm) 1 hashing algorithm operates on one 512-bit block at a time and outputs a 160-bit hash function, usually represented as a 40 hexadecimal digits. This value can be used to validate the integrity of the data. It crea...

"Client side" Privacy Risk - Represents computers typically used by company employees. - These computers normally connect to the company's server-side systems via wireless and hardwired networks. - Client side can represent a significant threat to the company's systems as well as sensitive data that may be on the client computers. - Employees often download customer files, corporate e-mails and legal documents to their computer for processing. - Employees may even store their personal i...

h Question carries 2 marks. Q.1 If h is any hashing function and is used to hash n keys in to a table of size m, where n<=m, the expected number of collisions involving a particular key x is : (A) less than 1. (B) less than n. (C) less than m. (D) less than n/2. Ans:A Q.2 Let A be an adjacency matrix of a graph G. The th ij entry in the matrix K A , gives (A) The number of paths of length K from vertex Vi to vertex Vj. (B) Shortest ...

WGU C949 - Data Structures And Algorithms exam with 100% correct answers 2023 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. Longest Common Substring An algorithm that determines the longest common substring that exists in two inputs strings. Binary Search An efficient algorithm for searching a list. The ...

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...