CRYPTO

To encrypt a message you need 2 main parts, a _________ & a key

• cipher

• algorithm

• code

• crypt

In Cryptography, original message, before being transformed, is called

• Simple Text

• Cipher Text

• Plain Text

• Filled Text

_______ is the science and art of transforming messages to make them secure and immune to attacks.

• 
  Cryptography

• neither Cryptography nor Cryptoanalysis

• Cryptoanalysis

• 
  either Cryptography or Cryptoanalysis

An encryption algorithm transforms plain text into:

• Cipher text

• Empty Text

• Simple Text

• Plain Text

A(n) ______ algorithm transforms cipher text to plain text.

• 
  Encryption

• 
  Decryption

What is encryption?

• When you put data / text into code making it difficult to read or understand.

• 
  A formal language designed to communicate instructions to a machine

• 
  A secret or disguised way of writing; a code.

• What is put in, taken in, or operated on by any process or system.

A cipher is _________________________.

• 
  a person who makes up secret codes

• 
  a lock that can be used to lock a message in a lock box

• 
  an algorithm that is used to scramble text so that it can be passed in secret

• 
  any puzzle, such as a crossword or Sudoku puzzle

An encryption key is used to help decrypt messages

• 
  True

• 
  False

Plaintext

• original message

• algorithm for transforming plaintext to ciphertext

• coded message

• info used in cipher known only to sender/receiver

ciphertext

• field of both cryptography and cryptanalysis

• converting plaintext to ciphertext

• study of encryption principles/methods

• coded message