Hash Functions Quiz

What is the purpose of a hash function?

• Sort data in ascending order

• Encrypt data for secure transmission

• Generate random numbers

• Convert a numerical input value into another compressed numerical value

What is the output length of a hash function?

• Infinite length

• Fixed length

• Variable length

• Arbitrary length

What are the values returned by a hash function called?

• Message digest

• Hash values

• Checksums

• Digital signatures

Which two are direct applications of hash functions?

• Password Storage

• Fingerprinting

• Collision Resistance

• Data Integrity Check

What property of a hash function makes it hard to find a message that produces a given hash?

• Collision resistance

• Second pre-image resistance

• Pre-image resistance

• Avalanche effect

What is the main goal of a birthday attack?

• To find two different input messages that produce the same hash value

• To increase the output size of a hash function

• To celebrate someone's birthday

• To prevent hash collisions

How can the risk of a birthday attack be mitigated?

• Use a hash function with a smaller output size

• Use the same cryptographic technique

• Use a salt

• Use a single hash function

Which hash function is designed by Ronald Rivest and produces a 128-bit hash?

• SHA-512

• SHA-256

• MD5

• SHA-1

Which hash function is part of the SHA-2 set and produces a 256-bit hash?

• MD5

• SHA-1

• SHA-512

• SHA-256

What is the main difference between hashing and encryption?

• Hashing is used for data compression, encryption is not

• Hashing has a decryption function, encryption does not

• Hashing is reversible, encryption is not

• Hashing produces a fixed-length output, encryption does not