An analysis of the applicability of federal law regarding hash-based searches of digital media

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Authors
Roy, Matthew B.
Subjects
Digital forensics
hash-based search
sector hashing
random sampling
similarity matching
Fourth Amendment
federal law
search and seizure
warrant search
consent search
border search
Advisors
Garfinkel, Simson
Date of Issue
2014-06
Date
Jun-14
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
The Fourth Amendment of the United States (U.S.) Constitution limits the ability of the government to search U.S. persons without cause or justification. The application of the Fourth Amendment to digital forensics search techniques is still evolving. This thesis summarizes current federal law and recent judicial rulings that can apply Fourth Amendment doctrine to current digital forensics techniques. It uses three hypothetical scenarios to show how current law could be applied to new techniques now under development: the use of sector hashes to find traces of digital contraband; the use of random sampling to rapidly triage large digital media; and the use of similarity functions to find documents that are similar but not identical to target documents.
Type
Thesis
Description
Department
Computer Science
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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