Hash Function Attacks Quiz
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Questions and Answers

What type of attack does not depend on the specific algorithm?

  • Brute-Force Attacks (correct)
  • Collision Resistant Attack
  • Cryptanalysis
  • Preimage Resistant Attack
  • In the case of a hash function, what does an attack depend on?

  • Complexity of the encryption method
  • Specific cryptographic algorithm
  • Bit length of the hash value (correct)
  • The data blocks used
  • Which attack seeks to exploit some property of the algorithm other than an exhaustive search?

  • Collision Resistant Attack
  • Brute-Force Attack
  • Cryptanalysis (correct)
  • Preimage Resistant Attack
  • What does a collision resistant attack aim to find?

    <p>Two messages or data blocks that yield the same hash value</p> Signup and view all the answers

    What strategy exploits the birthday paradox in a collision resistant attack?

    <p>Generating variations of a legitimate message</p> Signup and view all the answers

    What is the primary goal of an opponent in a collision resistant attack?

    <p>To find two messages conveying the same meaning</p> Signup and view all the answers

    What is the principal object of a hash function?

    <p>Data integrity</p> Signup and view all the answers

    Which property makes it computationally infeasible to find a data object that maps to a pre-specified hash result?

    <p>Preimage resistance</p> Signup and view all the answers

    What property of a cryptographic hash function ensures that it is difficult to find two different data objects that map to the same hash result?

    <p>Collision resistance</p> Signup and view all the answers

    In the context of message authentication, what does MAC stand for?

    <p>Message Authentication Code</p> Signup and view all the answers

    Which type of attack aims to find two different inputs with the same hash output?

    <p>Collision attack</p> Signup and view all the answers

    What is the purpose of storing hash values for each file on a system?

    <p>To detect intrusions and viruses</p> Signup and view all the answers

    What does a collision in hash functions refer to?

    <p>Similar preimages for different hash values</p> Signup and view all the answers

    Why are collisions considered undesirable in hash functions for data integrity?

    <p>Because they hinder the uniqueness of hash values</p> Signup and view all the answers

    What does it mean for a function to be preimage resistant?

    <p>It is difficult to find the input that generates a specific hash value</p> Signup and view all the answers

    In what scenario would an intruder need to modify a file without changing its hash value?

    <p>To maintain data integrity after an attack</p> Signup and view all the answers

    Why is the fixed output size of a cryptographic hash function important?

    <p>To ensure one-to-one mapping between inputs and outputs</p> Signup and view all the answers

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