Module 6

What is low latency?

A small amount of time that occurs between when a byte is input into a cryptographic algorithm and the time the output is obtained

Which of the following is not to be decrypted but is only used for comparison purposes? A. Digest B. Key C. Stream D. Algorithm

A. Digest

If Bob wants to send a secure message to Alice using an asymmetric cryptographic algorithm, which key does he use to encrypt the message?

Alice's public key

Basil was reading about a new attack that forces the system to abandon a higher cryptographic security mode of operation and instead fall back to an older and less secure mode. What type of attack is this?

Downgrade attack

Cicero is researching hash algorithms. Which algorithm would produce the longest and most secure digest?

SHA3-512

What are public key systems that generate different random public keys for each session?

perfect forward secrecy

Deo has been asked to explain RSA to his colleague. After his explanation, Deo is asked what, if any, weaknesses RSA has. How would Deo respond?

As computers become more powerful, the ability to computer factoring has increased

Which of these is the strongest symmetric cryptographic algorithm? A. Data Encryption Standard B. Advanced Encryption Standard C. Triple Data Encryption Standard D. RC 1

B. Advanced Encryption Standard

Which of these is NOT a characteristic of a secure hash algorithm? A. The results of a hash function should not be reversed B. Collisions should occur no more than 15 percent of the time C. A message cannot be produced from a predefined hash D. The hash should always be the same fixed size

B. Collisions should occur no more than 15 percent of the time

Which of these provides cryptographic services and is external to the device? A. Trusted Platform Module (TPM) B. Hardware Security Module (HSM) C. Self-encrypting hard disk drives (SED) D. Encrypted hardware-based USB devices

B. Hardware Security Module (HSM)

Which of the following is FALSE about "Security through obscurity"? A. It attempts to hide its existence from outsiders B. It can only provide limited security C. It is essentially impossible D. Proprietary cryptographic algorithms are an example

B. It can only provide limited security

Which of the following is NOT a symmetric cryptographic algorithm? A. DES B. SHA C. Blowfish D. 3DES

B. SHA

Which of the following is NOT a characteristic of the Trusted Platform Module (TPM)? A. It provides cryptographic services in hardware instead of software B. It can generate asymmetric cryptographic public and private keys C. It can easily be transported to another computer D. It includes a pseudorandom number generator (PRNG)

C. It can easily be transported to another computer

Which of these is NOT a basic security protection for information that cryptography can provide? A. Integrity B. Authenticity C. Risk D. Confidentiality

C. Risk

Which of the following hides the existence of information? A. Encryption B. Decryption C. Steganography D. Ciphering

C. Steganography

Cryptography can prevent an individual from fraudulently reneging on an action. What is this known as?

Nonrepudation

What is data called that is to be encrypted by inputting it into a cryptographic algorithm?

Plaintext

Brielle is researching substitution ciphers. She came across a cipher in which the entire alphabet was rotated 13 steps. What type of cipher is this?

ROT13

What is a collision?

Two files have the same digest

Egor wanted to use a digital signature. Which of the following benefits will the digital signature not provide?

Verify the receiver