Encryption and Decryption

Question 1

What is cryptography

Answer 1

Practice and study of techniques for secure communication

Question 2

What is Encryption

Answer 2

Encryption is the process of encoding messages or information in such a way that only authorized parties can read it
Assuring Privacy and confidentiality

Question 3

CA s are designed to achieve security goals such as

Answer 3

CIA

Question 4

CA s rely on secrets called

Answer 4

Keys

Question 5

CA s are ______ – known to everyone

Answer 5

published

Question 6

What are the 4 encryption methods

Answer 6

Simple Substitution – Caesar’s Cipher
Symmetric Key Encryption
Asymmetric Key Encryption
Hash Algorithms

Question 7

What is Simple substitution

Answer 7

Encrypting messages by substituting letters, numbers and symbols
to elements of the original message

Question 8

Shift by ___ is called a Caesar’s cipher

Answer 8

3

Question 9

What is confusion in CA

Answer 9

Obscure relationship between plaintext and
ciphertext

Question 10

What is diffusion in CA

Answer 10

Spread plaintext statistics through the ciphertext

Question 11

Three Basic Types of Encryption Systems

Answer 11

Symmetric Key
Asymmetric Key
Hash Algorithms