WGU C839 - Intro to Cryptography with 100% Verified Questions And Answers

WGU C839 - Intro to Cryptography with 100% Verified Questions And Answers Which of the following most accurately defines encryption? A changing a message so it can only be easily read by the intended recipient B Making binary changes to a message to conceal it C changing a message using complex mathematics D Applying keys to plain text A What type of encryption uses different keys to encrypt and decrypt the message? A Symmetric B Private key C Secure D Asymmetric D The most widely used asymmetric encryption algorithm is what? A RSA B Vigenere C DES D Caesar Cipher A Original, unencrypted information is referred to as . A text B plaintext C cleantext D ciphertext B Which of the following is NOT an asymmetric system? A PGP B RSA C SSL D DES D In order for User A to send User B an encrypted message that only User B can read, User A must encrypt message with which of the following keys? A User A's public key B User A's private key C User B's public key D User B's private key C The greatest weakness with symmetric algorithms is . A They are less secure than asymmetric B The problem of key exchange C They are slower than asymmetric D The problem of generating keys B Which of the following is generally true about block sizes? A Smaller block sizes increase security B Block sizes must be more than 256 bits to be secure C Block size is irrelevant to security D Larger block sizes increase security D A is a function that takes a variable-size input m and returns a fixed- size string. A Symmetric cipher B Hash C Asymmetric cipher D Feistel B Which of the following is a cryptographic protocol that allows two parties to establish a shared key over an insecure channel? A Elliptic Curve B RSA C MD5 D Diffie-Hellman D A is a digital representation of information that identifies you as a relevant entity by a trusted third party? A Digital Signature B Hash C Ownership stamp D Digest A