CNET151 Chapt 8 Encryption

__________ is the process of scrambling a message or other information so that it cannot be easily read by someone intercepting the message.

• Encryption

• Cryptography

• Keying

• Decryption

__________ is the art of writing in or deciphering secret code.

• Encryption

• Cryptography

• Keying

• Decryption

In __________ cryptography, a different key is used to encrypt the message than is used to decrypt the message.

• Asymmetric

• Symmetric

• Forward

• Backward

With symmetric cryptography, the same __________ is used to encrypt the message and decrypt the message.

• Code

• Key

• Lock

• Script

Using the __________ cipher, you choose some number by which to shift each letter of a text.

• Multi-alphabet substitution

• Caesar

• Atbash

• Rail fence

Using the __________ cipher, you select multiple numbers by which to shift letters.

• Polybius

• Atbash

• Multi-alphabet substitution

• Scytale

Which of the following is an operation used on binary numbers not found in normal math?

• AND

• PLUS

• MINUS

• LESS

__________ refers to the bits that are combined with the plain text to encrypt it.

• A key

• Plain text

• Cipher text

• An algorithm

__________ refers to the unencrypted text.

• A key

• Plain text

• An algorithm

• Cipher text

__________ refers to the encrypted text.

• A key

• Plain text

• An algorithm

• Cipher text