Iterated Random Oracle - A Universal Approach for Finding Loss in Security Reduction

Iterated Random Oracle - A Universal Approach for Finding Loss in Security Reduction

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Iterated Query in the Iterated Random Oracle

12 of 20

12 of 20

Iterated Query in the Iterated Random Oracle

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Iterated Random Oracle - A Universal Approach for Finding Loss in Security Reduction

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  1. 1 Intro
  2. 2 About this work
  3. 3 Two Types of Security Reductions
  4. 4 IND-Computational Hard Problem IND security based on a computational hard problem (IND-CHP) ???
  5. 5 Core of Encryption Reduction in Random Oracles Considering the following ciphertext
  6. 6 Finding Loss
  7. 7 Security Reduction in IND-CHP
  8. 8 Traditional Approach)
  9. 9 Trapdoor Test in Cash-Kiltz-Shoup Approach
  10. 10 Cash-Kiltz-Shoup)
  11. 11 What is Iterated Random Oracle? Suppose the adversary needs to make a challenge query in order to use
  12. 12 Iterated Query in the Iterated Random Oracle
  13. 13 Challenge Query in Iterated Random Oracle
  14. 14 Iterated Random Oracle)
  15. 15 Comparison of Three Theories
  16. 16 Queries and Tree Representation All queries and responses are represented using a tree.
  17. 17 Properties of Tree Representation
  18. 18 Proof of Our Theory
  19. 19 Conclusion
  20. 20 Theories in Applications

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