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AuthCropper: Authenticated Image Cropper for Privacy Preserving Surveillance Systems

Authors
Kim, JihyeLee, JiwonKo, HankyungOh, DonghwanHan, SeminJeong, GwonhoOh, Hyunok
Issue Date
Oct-2019
Publisher
ASSOC COMPUTING MACHINERY
Keywords
Privacy; authentication; forward-secure signature; video
Citation
ACM TRANSACTIONS ON EMBEDDED COMPUTING SYSTEMS, v.18, no.5SI, pp.1 - 17
Indexed
SCIE
SCOPUS
Journal Title
ACM TRANSACTIONS ON EMBEDDED COMPUTING SYSTEMS
Volume
18
Number
5SI
Start Page
1
End Page
17
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/147037
DOI
10.1145/3358195
ISSN
1539-9087
Abstract
As surveillance systems are popular, the privacy of the recorded video becomes more important. On the other hand, the authenticity of video images should be guaranteed when used as evidence in court. It is challenging to satisfy both (personal) privacy and authenticity of a video simultaneously, since the privacy requires modifications (e.g., partial deletions) of an original video image while the authenticity does not allow any modifications of the original image. This paper proposes a novel method to convert an encryption scheme to support partial decryption with a constant number of keys and construct a privacy-aware authentication scheme by combining with a signature scheme. The security of our proposed scheme is implied by the security of the underlying encryption and signature schemes. Experimental results show that the proposed scheme can handle the UHD video stream with more than 17 fps on a real embedded system, which validates the practicality of the proposed scheme.
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