Ali Al-Haj

Princess Sumaya University for Technology (PSUT), Computer Engineering, Faculty Member

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Harvard University

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Vrije Universiteit Brussel

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UNL - New University of Lisbon

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Dublin Institute of Technology

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Praxis Business School

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University of Technology/Iraq

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National Open University of Nigeria

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Ataturk University

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Papers by Ali Al-Haj

Medical imaging security using partial encryption and histogram shifting watermarking

2017 8th International Conference on Information Technology (ICIT), 2017

Rapid advancements in information and communication technologies facilitated sharing of digital m... more Rapid advancements in information and communication technologies facilitated sharing of digital medical images in telemedicine applications. However, due to the sensitivity of medical images, their security has become a challenging requirement that must be addressed. In this paper, a simple and efficient joint reversible data hiding and encryption algorithm is proposed for watermarking medical images while providing high embedding capacity. The proposed algorithm combines reversible data hiding techniques with standard encryption techniques in order to provide the needed security of transmitted and stored medical images. The algorithm utilizes substitution-based encryption and transposition-based encryption to achieve high degree of entropy in the encrypted watermarked images. The operation of the algorithm is based on dividing the original medical image randomly into two halves, each of which is assigned a different watermark. One of the watermarks is embedded before encryption and the other watermark is embedded after encryption. Aside from providing high entropy, the proposed algorithm provides relatively high embedding capacity because of the existence of two watermarks, while keeping low computational complexity.

Online security protocol for NFC mobile payment applications

2017 8th International Conference on Information Technology (ICIT), 2017

Near Field Communication (NFC) is a short range wireless technology that allows exchange of data ... more Near Field Communication (NFC) is a short range wireless technology that allows exchange of data between devices communicating within a short distance. Recently, the NFC functionality has been integrated inside mobile devices to allow them act as identifiers for customers, credit cards, and access cards. Payment transaction using NFC-enabled Mobile devices is continuously increasing because of its speed, convenience, and ease of use. However, a widespread of NFC-based payment can be guaranteed, if and only if, the payment transactions are made in a secured wireless environment. Unfortunately, the Europay, Mastercard and Visa (EMV) protocol, which is currently used to provide the required security, has some serious vulnerabilities which could lead to obvious risks for users of NFC-based payments. This paper presents an effective solution to enhance the security of NFC payments by solving the vulnerabilities of the EMV protocol. The proposed protocol adds a security layer to the EMV p...

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A data-driven implementation of back propagation learning algorithm

Neural Networks, 1992. IJCNN., …, 1992

Page 1. A Data-driven Implementation of Back Propagation Learning Algorithm Ali M. Alhaj Departme... more

Configurable Multirate Filter Banks

American Journal of Applied Sciences, 2008

Multimedia communications require efficient and real-time implementations of multirate digital si... more Multimedia communications require efficient and real-time implementations of multirate digital signal processing systems. The backbone structures of multirate systems are digital multirate filter banks. Therefore, efficient multimedia communications rely, in the first place, on real-time implementations of multirate filter banks. In this paper, we describe a Field Programmable Gate Array (FPGA) implementation of the analysis and synthesis filter banks which are the fundamental components of multirate systems. The implementation utilizes the parallel form of the distributed arithmetic technique which enables maximum exploitation of the parallelism inherent in the multirate filtering operation. Performance results demonstrate the effectiveness of the implementation and suggest that the FPGA platform is indeed attractive for implementing multirate filter banks..

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Image Watermarking Algorithms Based on the Discrete Wavelet Transform

An imperceptible and robust audio watermarking algorithm

EURASIP Journal on Audio, Speech, and Music Processing, 2014

Performance Optimization of DWT-Based Image Watermarking Using Genetic Algorithms

Advancements in the Application of Computer Science, 2009

... Al-Haj, Ali, and Aymen Abu-Errub. ... Watermarking Using Genetic Algorithms.&quot; In Uti... more

A Hybrid Digital Image Watermarking Algorithm

2007 Innovations in Information Technologies (IIT), 2007

Digital image watermarking is an emerging copyright protection technology. It aims at asserting i... more Digital image watermarking is an emerging copyright protection technology. It aims at asserting intellectual property rights of digital images by inserting a copyright identifier in the contents of the image, without sacrificing its quality. In this paper, we propose an imperceptible and a robust digital image watermarking algorithm. The algorithm is based on combining two powerful transform domain techniques; the discrete wavelet transform (DWT) and the singular value decomposition (SVD) transform. Performance evaluation results demonstrate the effectiveness of the proposed algorithm with respect to the requirements of image watermarking; imperceptibility and robustness.

A Reconfigurable Hardware Implementation of the One-Dimensional Discrete Wavelet Transform

ASIC hardware implementations of the discrete wavelet transform are required to cope with the int... more ASIC hardware implementations of the discrete wavelet transform are required to cope with the intensive real-time computations of the transform. In this paper, we describe a parallel implementation of the wavelet transform using one type of reconfigurable ASICs; Filed Programmable Gate Arrays (FPGAs). The implementation is based on reformulating the transform using the distributed arithmetic and ployphase decomposition techniques, so

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An FPGA-Based Parallel Distributed Arithmetic Implementation of the 1-D Discrete Wavelet Transform

Informatica (slovenia), 2005

The fine grained parallelism inherent in Field Programmable Gate Arrays (FPGAs) may be well explo... more The fine grained parallelism inherent in Field Programmable Gate Arrays (FPGAs) may be well exploited to implement the computation-intensive discrete wavelet transform, which is increasingly employed in multimedia consumer electronics. In this paper, we describe a parallel implementation of the discrete wavelet transform and its inverse using Virtex FPGAs. We make maximal utilization of the look-up table architecture of the

Hybrid DWT-SVD audio watermarking

International Conference on Digital Information Management, 2010

Audio watermarking is a relatively new technology that aims to embed copyright information in aud... more Audio watermarking is a relatively new technology that aims to embed copyright information in audio signals as a proof of their ownership. The driving force behind this technology has been the ever-increasing illegal manipulation of genuine audio products released by the music industry. In this paper, we propose an effective, robust, and inaudible audio watermarking algorithm. The effectiveness of algorithm

Wavelets pre-processing of Artificial Neural Networks classifiers

2008 5th International Multi-Conference on Systems, Signals and Devices, 2008

An efficient configurable hardware implementation of fundamental multirate filter banks

2008 5th International Multi-Conference on Systems, Signals and Devices, 2008

Efficient multimedia communications rely on real-time implementations of multirate filter banks. ... more Efficient multimedia communications rely on real-time implementations of multirate filter banks. In this paper, we describe a field programmable gate array (FPGA) implementation of the analysis and synthesis filter banks which are the fundamental components of multirate systems. The implementation utilizes parallel distributed arithmetic which enables maximum exploitation of the parallelism inherent in the multirate filtering operation. Performance results suggest that the FPGA platform is indeed attractive for implementing multirate filter banks.

Providing Integrity, Authenticity, and Confidentiality for Header and Pixel Data of DICOM Images

Journal of Digital Imaging, 2014

Exchange of medical images over public networks is subjected to different types of security threa... more Exchange of medical images over public networks is subjected to different types of security threats. This has triggered persisting demands for secured telemedicine implementations that will provide confidentiality, authenticity, and integrity for the transmitted images. The medical image exchange standard (DICOM) offers mechanisms to provide confidentiality for the header data of the image but not for the pixel data. On the other hand, it offers mechanisms to achieve authenticity and integrity for the pixel data but not for the header data. In this paper, we propose a crypto-based algorithm that provides confidentially, authenticity, and integrity for the pixel data, as well as for the header data. This is achieved by applying strong cryptographic primitives utilizing internally generated security data, such as encryption keys, hashing codes, and digital signatures. The security data are generated internally from the header and the pixel data, thus a strong bond is established between the DICOM data and the corresponding security data. The proposed algorithm has been evaluated extensively using DICOM images of different modalities. Simulation experiments show that confidentiality, authenticity, and integrity have been achieved as reflected by the results we obtained for normalized correlation, entropy, PSNR, histogram analysis, and robustness.

Secured Telemedicine Using Region-Based Watermarking with Tamper Localization

Journal of Digital Imaging, 2014

Medical images exchanged over public networks require a methodology to provide confidentiality fo... more Medical images exchanged over public networks require a methodology to provide confidentiality for the image, authenticity of the image ownership and source of origin, and image integrity verification. To provide these three security requirements, we propose in this paper a region-based algorithm based on multiple watermarking in the frequency and spatial domains. Confidentiality and authenticity are provided by embedding robust watermarks in the region-of-non-interest (RONI) of the image using a blind scheme in the discrete wavelet transform and singular value decomposition domain (DWT-SVD). On the other hand, integrity is provided by embedding local fragile watermarks in the region-of-interest (ROI) of the image using a reversible scheme in the spatial domain. The integrity provided by the proposed algorithm is implemented on a block-level of the partitioned-image, thus enabling localized detection of tampered regions. The algorithm was evaluated with respect to imperceptibility, robustness, capacity, and tamper localization capability, using MRI, Ultrasound, and X-ray gray-scale medical images. Performance results demonstrate the effectiveness of the proposed algorithm in providing the required security services for telemedicine applications.

Crypto-based algorithms for secured medical image transmission

IET Information Security, 2015

Booming telemedicine applications makes it deemed necessary to provide security services for such... more Booming telemedicine applications makes it deemed necessary to provide security services for such applications. The algorithms proposed in this field can be grouped into three classes: watermarking-based algorithms, crypto-based algorithms and hybrid algorithms. In this study, the authors propose two crypto-based algorithms capable of providing confidentiality, authenticity and integrity services to medical images exchanged in telemedicine applications. Strong cryptographic functions with internally generated symmetric keys and hash codes are used. The advanced encryption standard-Galois counter mode is used with the whirlpool hash function to provide confidentiality and authenticity, and the elliptic curve digital signature algorithm is used to provide authenticity and integrity. The proposed algorithms are based on the digital imaging and communication in medicine (DICOM) standard; however, unlike the standard, the algorithms provide confidentiality, authenticity and integrity for the header data, as well as for the pixel data of the DICOM images. Effectiveness of the proposed algorithms is evaluated and demonstrated through extensive experimentation using a benchmark set of DICOM images.

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Robust and Blind Watermarking of Relational Database Systems

Journal of Computer Science, 2008

... BibTeX | Add To MetaCart. @MISC{Al-haj_robustand, author = {Ali Al-haj and Ashraf Odeh}, titl... more

Communications in Computer and Information Science, 2010

... 143150, 2010. © Springer-Verlag Berlin Heidelberg 2010 Copyright Protection of Relational Da... more

A dual transform audio watermarking algorithm

Multimedia Tools and Applications, 2013

ABSTRACT In this paper, a non-blind digital audio watermarking algorithm that satisfies the minim... more ABSTRACT In this paper, a non-blind digital audio watermarking algorithm that satisfies the minimum requirements of optimal audio watermarking set by the International Federation of Photographic Industry (IFPI), is proposed. The algorithm does not degrade perception of audio, offers an SNR value of more than 44 dB, offers around 1387 bps data payload, and it is robust against common audio processing operations such as Gaussian noise addition, MP3 compression, re-quantization, re-sampling, echo, low-pass, high-pass, and band-pass filtering. The IFPI requirements were met by the proposed algorithm as it exploits the attractive properties of two powerful mathematical transforms; the Discrete Wavelet Transform (DWT), and the Singular Value Decomposition (SVD). DWT is applied to achieve robustness as it decomposes the original audio signal in such a way to scatter watermark bits throughout the signal. SVD provides imperceptibility to the proposed algorithm by embedding watermark bits onto the diagonal singular values of the S matrix produced by SVD. The effectiveness of the algorithm is demonstrated by a set of experiments using pop, instrumental, and speech audio scripts.

A Unified Approach towards Multimedia Watermarking

Concepts, Methodologies, Tools, and Applications, 2013

ABSTRACT The tremendous advancement of digital technology has increased the ease with which digit... more ABSTRACT The tremendous advancement of digital technology has increased the ease with which digital multimedia signals (image, video, audio) are stored, transmitted, and reproduced. Consequently, the content providers and owners are faced with problems of protection against copyright violation and other forms of abuse to their digital property. Digital watermarking has been proposed in the last decade as a solution to prevent illegal and malicious copying and distribution of digital media by embedding an unnoticeable information into the media content. This chapter describes three imperceptible and robust watermarking algorithms for different types of multimedia objects (image, video, audio). The three algorithms are based on cascading two powerful mathematical transforms; the Discrete Wavelet Transform (DWT), and the Singular Value Decomposition (SVD). The two transforms are different, and thus provide complementary levels of robustness against the same attack. In the proposed dual-transform algorithms, the watermark bits are not embedded directly on the wavelet coefficients, but rather on the elements of singular values of the DWT sub-bands of the multimedia object. Effectiveness of the proposed algorithms is demonstrated through extensive experimentation.

Medical imaging security using partial encryption and histogram shifting watermarking

2017 8th International Conference on Information Technology (ICIT), 2017

Online security protocol for NFC mobile payment applications

2017 8th International Conference on Information Technology (ICIT), 2017

Download

A data-driven implementation of back propagation learning algorithm

Neural Networks, 1992. IJCNN., …, 1992

Page 1. A Data-driven Implementation of Back Propagation Learning Algorithm Ali M. Alhaj Departme... more

Configurable Multirate Filter Banks

American Journal of Applied Sciences, 2008

Download

Image Watermarking Algorithms Based on the Discrete Wavelet Transform

An imperceptible and robust audio watermarking algorithm

EURASIP Journal on Audio, Speech, and Music Processing, 2014

Performance Optimization of DWT-Based Image Watermarking Using Genetic Algorithms

Advancements in the Application of Computer Science, 2009

... Al-Haj, Ali, and Aymen Abu-Errub. ... Watermarking Using Genetic Algorithms.&quot; In Uti... more

A Hybrid Digital Image Watermarking Algorithm

2007 Innovations in Information Technologies (IIT), 2007

A Reconfigurable Hardware Implementation of the One-Dimensional Discrete Wavelet Transform

Download

An FPGA-Based Parallel Distributed Arithmetic Implementation of the 1-D Discrete Wavelet Transform

Informatica (slovenia), 2005

Hybrid DWT-SVD audio watermarking

International Conference on Digital Information Management, 2010

Wavelets pre-processing of Artificial Neural Networks classifiers

2008 5th International Multi-Conference on Systems, Signals and Devices, 2008

An efficient configurable hardware implementation of fundamental multirate filter banks

2008 5th International Multi-Conference on Systems, Signals and Devices, 2008

Providing Integrity, Authenticity, and Confidentiality for Header and Pixel Data of DICOM Images

Journal of Digital Imaging, 2014

Secured Telemedicine Using Region-Based Watermarking with Tamper Localization

Journal of Digital Imaging, 2014

Crypto-based algorithms for secured medical image transmission

IET Information Security, 2015

Download

Robust and Blind Watermarking of Relational Database Systems

Journal of Computer Science, 2008

... BibTeX | Add To MetaCart. @MISC{Al-haj_robustand, author = {Ali Al-haj and Ashraf Odeh}, titl... more

Communications in Computer and Information Science, 2010

A dual transform audio watermarking algorithm

Multimedia Tools and Applications, 2013

A Unified Approach towards Multimedia Watermarking

Concepts, Methodologies, Tools, and Applications, 2013

Ali Al-Haj

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