Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Oblivious transfer"”.
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Network oblivious transfer
… for MPC. We propose an infrastructure based on oblivious transfer (OT), which would consist of OT channels between some pairs of parties in the network. We devise information-theoretically secure protocols that allow additional pairs of parties to establish secure OT correlations using the help …
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Frameworks for efficient quantum oblivious transfer in the QROM
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Constant Lower Bounds on the Cryptographic Security of Quantum Two-Party Computations
… In particular, we provide lower bounds for oblivious transfer, XOR oblivious transfer, the equality function, the inner product function, Yao's millionaires' problem, and the secret phrase problem. Note that many of these lower bounds are the first of their kind, which is a testament to the …
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Adversarial Two-Party Quantum Interactions in Cryptography and Machine Learning
… coin flipping, bit commitment, and variants of oblivious transfer. We begin by developing the mathematical framework of stochastic selection, which is potentially useful for devising new protocols with improved security for a combination of various tasks. We then use this idea to develop the …
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Efficient Non-Interactive Secure Two-Party Computation for Equality and Comparison
… Peikert-Vaikuntanathan-Waters maliciously secure oblivious transfer and a collision resistant hash function. We formally prove that the PET protocol and the PGT protocol provide computational security. In this research, we developed our protocol for PET and run experiments to test it. The results …
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The application of DRAM PUF as a physical token
… cryptography, particularly in the context of the oblivious transfer protocol which is based on the fuzzy transfer protocol. The results contributes to a deeper understanding of its application as a physical token as well as the security implications associated with deploying PUFs in cryptographic …
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Mobile agent security through multi-agent cryptographic protocols.
… as encrypted circuits, threshold decryption, and oblivious transfer. Our study of these tools yields new contributions to the general field of cryptography. Particularly, we correct a well-known construction of the encrypted circuit and give one of the first provably secure implementations of the …
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On Black-Box Complexity and Adaptive, Universal Composability of Cryptographic Tasks
… can be achieved via a black-box reduction to oblivious transfer. We show that it cannot be achieved via a black-box reduction to one-way function, unless the number of rounds is at least Omega(n/log n), where n is the input/output length of the one-way function. In the second part of this …
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Structure vs. hardness through the obfuscation lens
… (in the case of SZK), public-key encryption, oblivious transfer, deniable encryption, functional encryption, and even indistinguishability obfuscation; -- Complexity-theoretic Implications: As a corollary of our result, we show a separation between SZK and NP[set-theoretic intersection …
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Cryptographic Simulation Techniques with Applications to Quantum Zero-Knowledge and Copy-Protection
… cryptographic tool, statistical receiver-private oblivious transfer. This is the first construction of QPoK with the desired composability features. We also introduce a new non-black-box knowledge extraction technique using quantum fully homomorphic encryption (QFHE) and lockable obfuscation. One …
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On computational intractability assumptions in cryptography
… assumption: ""semi-honest secure protocol for oblivious transfer exists"" (sh-OT assumption). Additionally, the information theoretically impossible reductions considered in this thesis imply the assumption: ""one-way functions exist"" (OWF assumption). We conjecture that OWF assumption is …
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A cryptographic approach to location privacy
The rapid expansion of location-based services (LBS) has driven an escalating demand for personalised and context-aware applications, enriching user experiences across health, weather, and navigation sectors. These services offer valuable insights into various applications using large-scale …