Accommodative extractor for QIM‐based watermarking schemes

Kricha, Zied; Kricha, Anis; Sakly, Anis

doi:10.1049/iet-ipr.2018.5814

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…The hash values of class Ci are calculated as HCi = H(Ci) (i = 1, 2 … n), where H is taken as a hash function [49]. Two contiguous class hash values are grouped and computed simultane- Figure 2 shows the flow of operations in the designed mechanism, which executes the system and consists of five major constituents: LSB replacement watermarking mechanism [46], accommodative extractor [47], watermark validator [48], packet builder, and positional details. The transmitting data is classified into data classes C i (i = 1, 2 .…”

Section: Discussionmentioning

confidence: 99%

Morton Filter-Based Security Mechanism for Healthcare System in Cloud Computing

Bhatia

Malhotra²

2021

Healthcare

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Electronic health records contain the patient’s sensitive information. If these data are acquired by a malicious user, it will not only cause the pilferage of the patient’s personal data but also affect the diagnosis and treatment. One of the most challenging tasks in cloud-based healthcare systems is to provide security and privacy to electronic health records. Various probabilistic data structures and watermarking techniques were used in the cloud-based healthcare systems to secure patient’s data. Most of the existing studies focus on cuckoo and bloom filters, without considering their throughputs. In this research, a novel cloud security mechanism is introduced, which supersedes the shortcomings of existing approaches. The proposed solution enhances security with methods such as fragile watermark, least significant bit replacement watermarking, class reliability factor, and Morton filters included in the formation of the security mechanism. A Morton filter is an approximate set membership data structure (ASMDS) that proves many improvements to other data structures, such as cuckoo, bloom, semi-sorting cuckoo, and rank and select quotient filters. The Morton filter improves security; it supports insertions, deletions, and lookups operations and improves their respective throughputs by 0.9× to 15.5×, 1.3× to 1.6×, and 1.3× to 2.5×, when compared to cuckoo filters. We used Hadoop version 0.20.3, and the platform was Red Hat Enterprise Linux 6; we executed five experiments, and the average of the results has been taken. The results of the simulation work show that our proposed security mechanism provides an effective solution for secure data storage in cloud-based healthcare systems, with a load factor of 0.9. Furthermore, to aid cloud security in healthcare systems, we presented the motivation, objectives, related works, major research gaps, and materials and methods; we, thus, presented and implemented a cloud security mechanism, in the form of an algorithm and a set of results and conclusions.

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Section: Discussionmentioning

confidence: 99%

Morton Filter-Based Security Mechanism for Healthcare System in Cloud Computing

Bhatia

Malhotra²

2021

Healthcare

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“…Based on its objectives, image watermarking can be classified into three categories: robust, fragile and semi‐fragile watermarks [4]. The problem of authentication and integrity verification of digital images can be handled by using a fragile watermark.…”

Section: Introductionmentioning

confidence: 99%

Blind multipurpose watermarking with insertion of a single watermark: a generic construction based on verifiable threshold secret sharing

Sheidani

Eslami

2020

IET image process

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Currently, the existing literature on multipurpose watermarking employs multiple watermarks for simultaneous achieving of multiple security objectives. This approach can be problematic since a watermark targeting tampers might fail to detect tampering of another watermark inserted for copyright violation. Moreover, most of the current schemes follow a non‐blind approach where the original watermark is needed for authentication. A question that naturally arises is whether multipurpose watermarking can be realised with the insertion of a single watermark in a blind way or not. The goal of the authors study is to provide an affirmative answer to this important question. They show how a cryptographic primitive called verifiable threshold secret sharing can be used to come up with a generic construction for blind multipurpose watermarking which inserts a single watermark into the host image for simultaneous achieving of copyright protection, authentication, and tamper localisation. The generic property of the proposed scheme provides flexibility for choosing the embedding/extraction of the watermark based on the desired level of fidelity, robustness and capacity. Experimental results are provided to confirm the superiority of their proposed technique as compared to existing approaches.

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“…Digital property management and especially counterfeit protection mostly depend on watermarking in a variety of environments [37][38][39]. Digital watermarking has been finding its applications in digital cinema in recent years [40,41].…”

Section: Introductionmentioning

confidence: 99%

A Survey on Piracy Protection Techniques in Digital Cinema Watermarking Schemes

Zolfaghari¹,

Mitra²

2020

Recent Trends in Communication Networks

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Watermarking is used in several areas such as CDNs (Content Delivery Networks), as part of the rights management system for counterfeit prevention. Watermarking schemes need some additional features in order to be used in digital cinema. In fact, extra watermarks are added to movies by cinema projectors in projection time, which help identify the cinema hall in which the illegal copy has been recorded. But distortions caused by hand vibrations and the point of view angle make it difficult to recover the watermark. This makes it necessary to be distortionresistant for the watermarking schemes used in digital cinema. On the other hand, theatre owners would like to locate the camcorder that has recorded the pirate copy. This requires watermarking schemes to be able to estimate the distance and angle using the distributed pirate copy. In this chapter, we present a review on watermarking techniques specifically designed to attack the aforementioned problems.

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Accommodative extractor for QIM‐based watermarking schemes

Cited by 8 publications

References 26 publications

Morton Filter-Based Security Mechanism for Healthcare System in Cloud Computing

Morton Filter-Based Security Mechanism for Healthcare System in Cloud Computing

Blind multipurpose watermarking with insertion of a single watermark: a generic construction based on verifiable threshold secret sharing

A Survey on Piracy Protection Techniques in Digital Cinema Watermarking Schemes

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