WGU C839 (WGUC839)

ECES Cryptography Algorithms keys.

ECES Cryptography Practice questions with complete solutions

ECES Practice Questions with complete solution2

ECES Terms Questions With Complete Solutions

ECES Practice questions with complete solution1

ECES Practice Questions with Complete solutions.

AES is ___ a. Asymmetric b. Symmetric - -B Serpent is ___ a. Asymmetric b. Symmetric - -B Two Fish is ___ a. Asymmetric b. Symmetric - -B RC5 & RC6 is ___ a. Asymmetric b. Symmetric - -B IDEA is ___ a. Asymmetric b. Symmetric - -B TEA is ___ a. Asymmetric b. Symmetric - -B

These are usually the encryption of a message digest with the senders private key. In order to verify them, the recipient uses the senders public key. They are considered good if they provide the following. Authentication Integrity Non-repudiation - -Digital Signature It is a digital document that contains a public key and some information to allow your system to verify where they key came from. This is the most common way to distribute pubic keys in asymmetric cryptography. - -Digital ...

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 for the last, and the second letter for the second to last. Simply reverses the alphabet - ...

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 cert...