CYB125 - Ch7

Maria receives a ciphertext message from her colleague Wen. What type of function does Maria need to use to read the plaintext message?

• Encryption

• Hashing

• Decryption

• Validation

Which approach to cryptography uses highly parallel algorithms that could solve problems in a fraction of the time needed by conventional computers?

• Quantum cryptography

• Asymmetric cryptography

• Elliptic curve cryptography

• Classic cryptography

Bob is sending a message to Alice. He wants to ensure that nobody can read the content of the message while it is in transit. What goal of cryptography is Bob attempting to achieve?

• Confidentiality

• Integrity

• Authentication

• Nonrepudiation

Bob is sending a message to Alice. He wants to ensure that nobody tampers with the message while it is in transit. What goal of cryptography is Bob attempting to achieve?

• Confidentiality

• Integrity

• Authentication

• Nonrepudiation

When Alice receives a message from Bob, she wants to be able to demonstrate to Miriam that the message actually came from Bob. What goal of cryptography is Alice attempting to achieve?

• Confidentiality

• Integrity

• Authentication

• Nonrepudiation

Alice would like to send a message to Bob securely and wishes to use asymmetric encryption to encrypt the contents of the message. What key does she use to encrypt this message?

• Alice's public key

• Alice's private key

• Bob's public key

• Bob's private key

Security objectives add value to relationships between businesses or between businesses and their customers. Which objective binds a message or data to a specific entity?

• Message authentication

• Digital signature

• Receipt and confirmation

• Nonrepudiation

Which information security objective verifies the action to create an object or verifies an object's existence by an entity other than the creator?

• Validation

• Authorization

• Certification

• Witnessing

Which type of cipher works by rearranging the characters in a message?

• Substitution

• Steganographic

• Transposition

• Asymmetric

Which of the following is not an objective of cryptanalysis, the process of breaking codes?

• Encrypt the plaintext of a target message

• Determine the key used to encrypt a target message

• Derive the algorithm used by a particular cipher

• Solve the general mathematical problem underlying the cryptography