Privacy-enhanced Perceptual Hashing of Audio Data

Heiko Knospe

2013

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.

Paper Citation

in Harvard Style

Knospe H. (2013). Privacy-enhanced Perceptual Hashing of Audio Data . In Proceedings of the 10th International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2013) ISBN 978-989-8565-73-0, pages 549-554. DOI: 10.5220/0004532605490554

in Bibtex Style

@conference{secrypt13,
author={Heiko Knospe},
title={Privacy-enhanced Perceptual Hashing of Audio Data},
booktitle={Proceedings of the 10th International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2013)},
year={2013},
pages={549-554},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004532605490554},
isbn={978-989-8565-73-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2013)
TI - Privacy-enhanced Perceptual Hashing of Audio Data
SN - 978-989-8565-73-0
AU - Knospe H.
PY - 2013
SP - 549
EP - 554
DO - 10.5220/0004532605490554