With PQDT Open, you can read the full text of open access dissertations and theses free of charge.
About PQDT Open
Search
COMING SOON! PQDT Open is getting a new home!
ProQuest Open Access Dissertations & Theses will remain freely available as part of a new and enhanced search experience at www.proquest.com.
Questions? Please refer to this FAQ.
The purpose of this quantitative correlational study was to determine if a unique signature exists for EXIF JPEG elements from an iPhone 7 iOS 11 for source device and native picture application authentication. Law enforcement investigators need reliable and field applicable techniques for source authentication (Kraetzer & Dittmann, 2015), facilitating criminal identification (Miller, 2013). The general problem was law enforcement does not possess the knowledge or expertise for digital image source authentication on specific hardware and version implementations (Cummins Flory, 2016; Gogolin, 2010; Holt & Bossler, 2016). The specific problem was law enforcement does not possess the knowledge or expertise for digital image source authentication with EXIF JPG images for an iPhone 7 with iOS 11 (Cummins Flory, 2016). Literature review presented law enforcement training considerations, hardware/software implications for EXIF JPEG source authentication, and non-EXIF source authentication implications. This quantitative correlational study presented a moderate to strong correlation between Manufacturer, Model and Operations to a unique signature from EXIF JPEG. Test-retest reliability identified secondary quantization table usage, reducing anticipated 100% matching output to 99.04%. Field values for an iPhone 7 with iOS 11 were identified with differences from iPhone 5s, iPhone 6 and Samsung Galaxy S7 with Android 7.0.
Advisor: | Beatty, Dennis |
Commitee: | Butler, William, Pittman, Jason |
School: | Capitol Technology University |
Department: | Technology (PhD) |
School Location: | United States -- Maryland |
Source: | DAI-B 81/9(E), Dissertation Abstracts International |
Source Type: | DISSERTATION |
Subjects: | Information Technology, Computer science, Computer Engineering |
Keywords: | EXIF, Image forensics, JPEG, Metadata, Quantization, Source authentication |
Publication Number: | 27828526 |
ISBN: | 9781658487986 |