Privacy-enhanced Perceptual Hashing of Audio Data

Heiko Knospe

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Paper

Privacy-enhanced Perceptual Hashing of Audio Data

Topics: Privacy; Privacy Enhancing Technologies; Security and Privacy in Pervasive/Ubiquitous Computing

In Proceedings of the 10th International Conference on Security and Cryptography - Volume 0ICETE, 549-554, 2013 , Reykjavík, Iceland

Author: Heiko Knospe

Affiliation: Cologne University of Applied Sciences, Germany

Keyword(s): Perceptual Hashing, Audio Hashing, Audio Fingerprinting, Acoustic Fingerprint, Privacy, Security.

Related Ontology Subjects/Areas/Topics: Data and Application Security and Privacy ; Information and Systems Security ; Privacy ; Privacy Enhancing Technologies ; Security and Privacy in Pervasive/Ubiquitous Computing

Abstract: Audio hashes are compact and robust representations of audio data and allow the efficient identification of specific recordings and their transformations. Audio hashing for music identification is well established and similar algorithms can also be used for speech data. A possible application is the identification of replayed telephone spam. This contribution investigates the security and privacy issues of perceptual hashes and follows an information-theoretic approach. The entropy of the hash should be large enough to prevent the exposure of audio content. We propose a privacy-enhanced randomized audio hash and analyze its entropy as well as its robustness and discrimination power over a large number of hashes.

CC BY-NC-ND 4.0

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Paper citation in several formats:

Knospe, H. (2013). Privacy-enhanced Perceptual Hashing of Audio Data. In Proceedings of the 10th International Conference on Security and Cryptography (ICETE 2013) - SECRYPT; ISBN 978-989-8565-73-0; ISSN 2184-3236, SciTePress, pages 549-554. DOI: 10.5220/0004532605490554

@conference{secrypt13,
author={Heiko Knospe.},
title={Privacy-enhanced Perceptual Hashing of Audio Data},
booktitle={Proceedings of the 10th International Conference on Security and Cryptography (ICETE 2013) - SECRYPT},
year={2013},
pages={549-554},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004532605490554},
isbn={978-989-8565-73-0},
issn={2184-3236},
}

TY - CONF

JO - Proceedings of the 10th International Conference on Security and Cryptography (ICETE 2013) - SECRYPT
TI - Privacy-enhanced Perceptual Hashing of Audio Data
SN - 978-989-8565-73-0
IS - 2184-3236
AU - Knospe, H.
PY - 2013
SP - 549
EP - 554
DO - 10.5220/0004532605490554
PB - SciTePress