Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection

The DICOM (<i>Digital Imaging and COmmunication in Medicine</i>) standard provides a framework for a diagnostically-accurate representation, processing, transfer, storage and display of medical imaging data. Information hiding in DICOM is currently limited to the application of digital m...

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Main Authors: Aleksandra Mileva, Aleksandar Velinov, Vesna Dimitrova, Luca Caviglione, Steffen Wendzel
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/24/2/176
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author Aleksandra Mileva
Aleksandar Velinov
Vesna Dimitrova
Luca Caviglione
Steffen Wendzel
author_facet Aleksandra Mileva
Aleksandar Velinov
Vesna Dimitrova
Luca Caviglione
Steffen Wendzel
author_sort Aleksandra Mileva
collection DOAJ
description The DICOM (<i>Digital Imaging and COmmunication in Medicine</i>) standard provides a framework for a diagnostically-accurate representation, processing, transfer, storage and display of medical imaging data. Information hiding in DICOM is currently limited to the application of digital media steganography and watermarking techniques on the media parts of DICOM files, as well as text steganographic techniques for embedding information in metadata of DICOM files. To improve the overall security of the DICOM standard, we investigate its susceptibility to network steganographic techniques. To this aim, we develop several network covert channels that can be created by using a specific transport mechanism – the DICOM Message Service and Upper Layer Service. The bandwidth, undetectability and robustness of the proposed covert channels are evaluated, and potential countermeasures are suggested. Moreover, a detection mechanism leveraging entropy-based metrics is introduced and its performance has been assessed.
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spelling doaj.art-640b737cb4844730bf61a75cf37050722023-11-23T19:47:12ZengMDPI AGEntropy1099-43002022-01-0124217610.3390/e24020176Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based DetectionAleksandra Mileva0Aleksandar Velinov1Vesna Dimitrova2Luca Caviglione3Steffen Wendzel4Faculty of Computer Science, “Goce Delcev” University, 2000 Shtip, North MacedoniaFaculty of Computer Science, “Goce Delcev” University, 2000 Shtip, North MacedoniaFaculty of Computer Science and Engineering, Ss. Cyril and Methodius University, 1000 Skopje, North MacedoniaInstitute of Applied Mathematics and Information Technologies, 16149 Genova, ItalyCenter for Technology and Transfer, Worms University of Applied Sciences, 67549 Worms, GermanyThe DICOM (<i>Digital Imaging and COmmunication in Medicine</i>) standard provides a framework for a diagnostically-accurate representation, processing, transfer, storage and display of medical imaging data. Information hiding in DICOM is currently limited to the application of digital media steganography and watermarking techniques on the media parts of DICOM files, as well as text steganographic techniques for embedding information in metadata of DICOM files. To improve the overall security of the DICOM standard, we investigate its susceptibility to network steganographic techniques. To this aim, we develop several network covert channels that can be created by using a specific transport mechanism – the DICOM Message Service and Upper Layer Service. The bandwidth, undetectability and robustness of the proposed covert channels are evaluated, and potential countermeasures are suggested. Moreover, a detection mechanism leveraging entropy-based metrics is introduced and its performance has been assessed.https://www.mdpi.com/1099-4300/24/2/176network steganographymedical informaticsHISPACSCT scannersMRI scanners
spellingShingle Aleksandra Mileva
Aleksandar Velinov
Vesna Dimitrova
Luca Caviglione
Steffen Wendzel
Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection
Entropy
network steganography
medical informatics
HIS
PACS
CT scanners
MRI scanners
title Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection
title_full Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection
title_fullStr Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection
title_full_unstemmed Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection
title_short Information Hiding in the DICOM Message Service and Upper Layer Service with Entropy-Based Detection
title_sort information hiding in the dicom message service and upper layer service with entropy based detection
topic network steganography
medical informatics
HIS
PACS
CT scanners
MRI scanners
url https://www.mdpi.com/1099-4300/24/2/176
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