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Now showing items 1-8 of 8

    • Cryptography and Privacy in Vehicular Communication Networks 

      Sharma, Pravek (University of Waterloo, 2023-08-28)
      Wireless communication technologies can support dynamic networks between vehicles, pedestrians and roadside infrastructure called Vehicular Ad hoc Networks (VANETs). Wireless communication over VANETs allows for several ...
    • Digital Signature Schemes Based on Hash Functions 

      Lafrance, Philip (University of Waterloo, 2017-04-19)
      Cryptographers and security experts around the world have been awakened to the reality that one day (potentially soon) large-scale quantum computers may be available. Most of the public-key cryptosystems employed today on ...
    • Non-Constructivity in Security Proofs 

      Soundararajan, Priya (University of Waterloo, 2018-09-10)
      In the field of cryptography, one generally obtains assurances for the security of a cryptographic protocol by giving a reductionist security proof, which is comprised of a reduction from breaking a mathematical problem ...
    • On the effectiveness of isogeny walks for extending cover attacks on elliptic curves 

      Yee, Randy (University of Waterloo, 2016-08-23)
      Cryptographic systems based on the elliptic curve discrete logarithm problem (ECDLP) are widely deployed in the world today. In order for such a system to guarantee a particular security level, the elliptic curve selected ...
    • Quantum Cost Models for Cryptanalysis of Isogenies 

      Jaques, Samuel (University of Waterloo, 2019-05-01)
      Isogeny-based cryptography uses keys large enough to resist a far-future attack from Tani’s algorithm, a quantum random walk on Johnson graphs. The key size is based on an analysis in the query model. Queries do not ...
    • Signature Schemes in the Quantum Random-Oracle Model 

      Eaton, Edward (University of Waterloo, 2017-04-25)
      A signature scheme is a fundamental component in modern digital communication. It allows for authenticated messages, without which it would be nearly impossible to ensure security when using most modern technologies. ...
    • Towards Private Biometric Authentication and Identification 

      Gold, Jonathan (University of Waterloo, 2023-09-05)
      Handwriting and speech are important parts of our everyday lives. Handwriting recognition is the task that allows the recognizing of written text, whether it be letters, words or equations, from given data. When analyzing ...
    • Worst-Case to Average-Case Reductions for the SIS Problem: Tightness and Security 

      Bakos Lang, Elena (University of Waterloo, 2019-07-30)
      We present a framework for evaluating the concrete security assurances of cryptographic constructions given by the worst-case SIVP_γ to average-case SIS_{n,m,q,β} reductions. As part of this analysis, we present the tightness ...


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