Global ETD Search
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Showing 1 to 20 of 261 for “"Private Information"”.
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Efficient Private Information Retrieval
… can reveal significant and possibly sensitive information about her. Private Information Retrieval (PIR) algorithms can be leveraged for providing perfect privacy to users' queries, though at a restrictive computational cost. In this work, we consider today's highly distributed computing …
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Distributional Private Information Retrieval
A private-information-retrieval (PIR) scheme lets a client fetch a record from a remote database without revealing which record it has fetched. Classic PIR schemes treat all database records the same but, in practice, some database records are much more popular (i.e., commonly fetched) than others. …
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Repeated games with private information
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Economics, c1999
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Practical protocols for private information retrieval
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Private Information Retrieval with Access Control
Private Information Retrieval (PIR) allows a user to query for a record from a remote database without revealing the query to the database server. However, PIR does not provide access control guarantees, allowing any user access to any record. Moreover, the database server cannot check access …
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Protecting Personal Private Information in Collaborative Environments
… anytime over any geographical distance. Sharing information between individuals through collaborative environments creates new challenges in privacy protection for organizations and the members of organizations. This thesis confronts the problems when attempting to protect the personal private …
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Essays on Individual Incentives and Private Information
… studies the impact of multilateral asymmetric information about inventories in a two-echelon inventory systems. The second model applies optimization techniques to solve a monopolist's revenue problem where the seller's cost function is not separable across buyers with multidimensional private …
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Banks' acquisition of private information about financial misreporting
Made available in DSpace on 2012-09-18T21:07:33Z (GMT). No. of bitstreams: 3 Chen_Po-Chang.pdf: 402401 bytes, checksum: 28636c8bed4de247d7cbf3e63ac6cebd (MD5) Chen_Po-Chang.docx: 1471963 bytes, checksum: e4d684e0ea0e39d7faef20210d1e0396 (MD5) license.txt: 4056 bytes, checksum: …
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On basing private information retrieval on NP-hardness
… that the security of single-server single-round private information retrieval schemes cannot be based on NP-hardness, unless the polynomial hierarchy collapses. Our main technical contribution is in showing how to break the security of a PIR protocol given an SZK oracle. Our result is tight in …
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Locally Decodable Codes and Private Information Retrieval Schemes
… namely Locally Decodable Codes (LDCs) and Private Information Retrieval Schemes (PIRs). Locally decodable codes are error-correcting codes that allow extremely efficient, "sublinear-time" decoding procedures. More formally, a k-query locally decodable code encodes n-bit messages x in such a …
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Single-Server Private Information Retrieval with Sublinear Amortized Time
We construct new private-information-retrieval protocols in the singleserver setting. Our schemes allow a client to privately fetch a sequence of database records from a server, while the server answers each query in average time sublinear in the database size. Specifically, we introduce the first …
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Private Information Retrieval in an Anonymous Peer-to-Peer Environment
Private Information Retrieval (PIR) protocols enable a client to access data from a server without revealing what data was accessed. The study of Computational Private Information Retrieval (CPIR) protocols, an area of PIR protocols focusing on computational security, has been a recently …
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OnionChopper: A Modular Arithmetic Hardware Accelerator for Private Information Retrieval
Private information retrieval (PIR) is a protocol which allows a user to retrieve data from a database on a server without the server being able to deduce which records were retrieved. Due to the homomorphic cryptography systems required to make these protocols work and large amount of data …
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Private information and price regulation In the US credit card market
Lenders typically learn new information about their borrowers over time but can be restricted from repricing debt in response to this information. I study a leading example of such re-pricing restrictions, the 2009 Credit CARD Act, to ask how such restrictions affect credit market efficiency. Using …
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Single-server client preprocessing private information retrieval with tight space-time trade-off
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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Explaining the Conceptualisation of Reputation in the Trinity of Torts: Defamation, Misuse of Private Information and Data Protection
… about claimants’ ability to pursue misuse of private information and data protection claims in response to reputational harm, when historically these claims would usually sound only in defamation. The assumption is that this cause-of-action-shopping is illegitimate, as misuse of private …
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A More Principled Approach to the Conflict between Privacy and Freedom of Expression in the Law of Misuse of Private Information
… Freedom of Expression in the Law of Misuse of Private Information Jelena Gligorijevic Trinity College, Cambridge "[T]he ends of men are many, and not all of them are…compatible with each other…, the possibility of conflict…can never be wholly eliminated from human life." (Isiah Berlin, Liberty …
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Essays on information and insurance markets
This thesis studies the impact of private information on the existence of insurance markets. In the first chapter, I study the case of insurance rejections. Across a wide set of non-group insurance markets, applicants are rejected based on observable, often high-risk, characteristics. I explore …
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Essays on the relation between stock price movements and orders
… distinguish between two causal interpretations: private information and uninformed price pressure by looking at the implications of a private information model. For idiosyncratic returns, where one would expect private information to be important, and the R2 to be high, the R2 is indeed around …
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