Online Access Free Introduction-to-Cryptography Practice Test

(Which symmetric encryption technique uses a 256-bit key size and a 128-bit block size?)

• A.IDEA
• B.3DES
• C.DES
• D.AES

(Why did the National Institute of Standards and Technology (NIST) choose Ascon for lightweight cryptography?)

• A.To authenticate users during data transmission
• B.To provide a secure and efficient encryption solution for resource-constrained devices
• C.To encrypt data at rest
• D.To ensure compatibility with legacy systems

(Which of the following is an example of a software encryption solution for disk storage?)

• A.Hardware Security Module (HSM)
• B.BitLocker and FileVault
• C.Virtual Private Network (VPN)
• D.USB encryption hardware

(What is the significance of the Nobody But Us (NOBUS) principle in cryptography?)

• A.It denotes a cryptographic algorithm with known weaknesses.
• B.It represents a widely used encryption standard.
• C.It indicates that a vulnerability is so difficult to exploit that only the entity that created it can exploit it.
• D.It refers to a cryptographic key that can be accessed by anyone.

(What is the length (in bits) of a SHA-1 hash output?)

• A.160
• B.320
• C.40
• D.80