Lesson 4.1

Which of the following fits the definition?

An algorithm used for encryption or decryption.

• Cipher

• Cryptography

• Plaintext

• Ciphertext

Which of the following fits the definition?

The science and art of delivering a message securely and confidentially.

• Cipher

• Cryptography

• Plaintext

• Ciphertext

Which of the following fits the definition?

The original message that needs to be encrypted.

• Cipher

• Cryptography

• Plaintext

• Ciphertext

Which of the following fits the definition?

The encrypted message generated by a cipher.

• Cipher

• Cryptography

• Plaintext

• Ciphertext

Which of the following are examples of cryptographic devices?

• Homophone Substitution

• Literary Code

• Playfair Cipher

• Letter Frequency

• Cryptography

Which of the following fits the definition?

An encryption method where the sender and receiver share a single private key to use in the encryption algorithm.

• Symmetric Key Encryption

• Cryptography

• Cipher

• Asymmetric Key Encryption

Which of the following fits the definition?

An encryption method that uses two keys, a public key available to everyone and a private key belonging to one owner. The keys are combined mathematically to create one key used in the encryption/decryption algorithm.

• Symmetric Key Encryption

• Cryptography

• Cipher

• Asymmetric Key Encryption

What encryption method is an example of symmetric key encryption?

• Vigenere Cipher

• Literary Code

• Cipher Disk

• Letter Frequency

• Homophone Substitution

What is a widely used asymmetric encryption algorithm?

• RSA

• Scytale

• Pigpen

• Letter Substitution

• Homophone Substitution

Which of the following fits the definition?

Data that is stored somewhere.

• Data at rest

• Data in transit

• Data in process

• Ciphertext