WGU C839 PACKAGE DEAL QUESTIONS AND ANSWERS WITH VERIFIED SOLUTIONS UPDATED 2025

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 - ANSWER Mono-Alphabet Substitution First used by Julius Caesar Every letter is shifted a fixed number of sp...

The same key is used to encrypt messages as well as decrypt messages. These algorithms are always faster but have an issue with exchanging keys. - ANSWER Symmetric Cryptography Modern cryptography began when Claude Shannon publish "Communication Theory of Secrecy Systems" in 1949. He focuse...

Finding any method to decrypt the message that is more efficient that simple brute force attempts. - ANSWER Breaking Ciphers Simply trying every possible key to decrypt a message - ANSWER Brute Force Using other techniques to attempt to derive the key, can be used to test the efficacy of a cry...

Consists of public and private keys The public key is made public by publishing to a directory or installed on a computer. The private key is kept secret Does not involve exchanging a secret key or key exchange The public key is used to encrypt messages only the recipients private key can decryp...

DES - ANSWER 64 Bit Block - 56 Bit Key - 16 Rounds AES - ANSWER 128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds BlowFish - ANSWER 64 Bit Block - 32 thru 448 Bit Key - 16 Rounds TwoFish - ANSWER 128 Bit Block - 1 thru 256 Bit Key - 16 Rounds Serpent - ANSWER 128 Bit Block 128, 1...