Fingerprint Scheme For Digital Text

2006

Secure communication of data over public channels is one of the most important challenges. Both the activities to secure contents and to break security are very hot. In order to reduce the chances of attack, security needs to be made invisible. The needs to preserve originality, ownership information, and integrity of text documents in a way that cannot be identified by everyone is being felt badly. Watermarking of the documents is a step toward achieving these objectives. However, to watermark a plain text document (ASCII) in a way that the original text will not change (and it would be very difficult to break it), is a great challenge. We have developed a novel encoding scheme which can be used to insert information in plain text without changing the text. A system has been developed based upon this encoding scheme. This paper describes the system and demonstrates its workings.

Jurnal Teknologi, 2015

The demand for copyright protection of text documents is extremely vital especially when the text is transmitted over the Internet. One of the best practical resolutions to maintain the security of document media is digital watermarking. Several approaches have been proposed to guarantee the safety and protection of the documents against dishonest copying and distribution. This paper suggests an innovative zero-watermarking scheme for the purpose of authentication and tamper detection in simple text documents. The algorithm generates a watermark based on the effective characters of the text contents which can be extracted later using extraction algorithm to identify the status of tampering in the text document. Experimental results demonstrate the effectiveness of the algorithm against random tampering attacks. Watermark pattern matching and watermark distortion rate are used as evaluation parameters on multiple text samples of varying length.

With the ceaseless usage of web and other online services, it has turned out that copying, sharing, and transmitting digital media over the Internet are amazingly simple. Since the text is one of the main available data sources and most widely used digital media on the Internet, the significant part of websites, books, articles, daily papers, and so on is just the plain text. Therefore, copyrights protection of plain texts is still a remaining issue that must be improved in order to provide proof of ownership and obtain the desired accuracy. During the last decade, digital watermarking and steganography techniques have been used as alternatives to prevent tampering, distortion, and media forgery and also to protect both copyright and authentication. This paper presents a comparative analysis of information hiding techniques, especially on those ones which are focused on modifying the structure and content of digital texts. Herein, various text watermarking and text steganography techniques characteristics are highlighted along with their applications. In addition, various types of attacks are described and their effects are analyzed in order to highlight the advantages and weaknesses of current techniques. Finally, some guidelines and directions are suggested for future works.

Theoretical Computer Science, 1999

In this paper 1 we present a new approach for the secure and robust copyright protection of digital images. We describe a system for generating digital watermarks and for trading watermarked images. The system is based on a new watermarking technique, which is robust against image transformation techniques such as compression, rotation, translation, scaling and cropping. It uses modulation of the magnitude components in Fourier space to emb e d a w atermark and an accompanying template and, during watermark extraction, reads a template in the log polar transform of the frequency domain. The template is used for analyzing scaling and rotation su ered by the watermarked stego-image. The detection of the watermarks is also possible without any need for the original cover-image. In addition, the system applies asymmetric cryptographic protocols for di erent purposes, namely embedding detecting the watermark and transferring watermarked data. The public key technique is applied for the construction of a one-way watermark embedding and the veri cation function to identify and prove the uniqueness of the watermark. Legal dispute resolution is supported for the multiple watermarking of a digital image without revealing the con dential keying information.

International journal of engineering research and technology, 2013

Growing concern the world over, related to personal and property safety has propelled rapid growth of security and surveillance related technologies. The biometric system is one such that can provide accurate and reliable scheme for person verification. The main aim . Introduction of fingerprint,introduction watermark, & digital signatures. .[1] Keyword: cryptography, Watermarking, public-key cryptosystems. Introduction:While the rapid development and deployment of new IT technologies has improved the ease of access to digital information, it has also led to fears that copyright could be eroded by the illegal copying and redistribution of digital media. This is of particular concern, for example, to commercial publishers of digital audio and video content whose existence depends on defending the copyright of their information assets. If content owners cannot be assured that they will be properly compensated for use of their works, they will be unlikely to make these available for ac...

IEEE Journal on Selected Areas in Communications, 1995

Modern computer networks make it possible to distribute documents quickly and economically by electronic means rather than by conventional paper means. However, the widespread adoption of electronic distribution of copyrighted material is currently impeded by the ease of unauthorized copying and dissemination. In this paper we propose techniques that discourage unauthorized distribution by embedding each document with a unique codeword. Our encoding techniques are indiscernible by readers, yet enable us to identify the sanctioned recipient of a document by examination of a recovered document. We propose three coding methods, describe one in detail, and present experimental results showing that our identification techniques are highly reliable, even after documents have been photocopied.

The Scientific World Journal, 2014

This paper addresses the problems and threats associated with verification of integrity, proof of authenticity, tamper detection, and copyright protection for digital-text content. Such issues were largely addressed in the literature for images, audio, and video, with only a few papers addressing the challenge of sensitive plain-text media under known constraints. Specifically, with text as the predominant online communication medium, it becomes crucial that techniques are deployed to protect such information. A number of digital-signature, hashing, and watermarking schemes have been proposed that essentially bind source data or embed invisible data in a cover media to achieve its goal. While many such complex schemes with resource redundancies are sufficient in offline and less-sensitive texts, this paper proposes a hybrid approach based on zero-watermarking and digital-signature-like manipulations for sensitive text documents in order to achieve content originality and integrity v...

The wide proliferation of digital media, such as digital images has aroused great interest for copyright protection, annotation and authentication. In this paper, we have used invisible watermarking as a means for authentication of two-color text documents. After detecting important features of the document for example the name in an ID card, they are compressed and embedded in the document image as a watermark. Two variations have been made to the CPT watermarking algorithm and the improved scheme has been used as our watermarking method. This scheme uses a secret matrix key and therefore is completely secure. It also has a high capacity and does not degrade the quality of the host image. As we use a lose less method to compact each important feature and embed the coded feature many times in the document image, the implemented system is able to detect image altercations in these features and can completely retrieve them, even if a hacker has changed them in that document. Therefore, we can provide a valid authentication for the retrieved document.

Mehran University Research Journal of Engineering and Technology, 2022

Nowadays, with the rapid development of advanced technologies, an illegal copy of digital documents can be easily generated. The Portable Document Format is the most common and widely used text document on the internet. The copyright protection of these documents is a challenging task. Advanced techniques have been proposed in the past but have not delivered the expected results. These techniques are either robust or imperceptible or have a high capacity, but do not maintain the balance between all parameters. Digital watermarking has been used over the past decade to detect forgery and tampering detection, maintain copyright and authentication. This study proposes a novel approach for Portable Document Format based on document page objects. The Special objects of Portable Document Format are used for watermarking without affecting the content of the original document. The proposed technique preserves the imperceptibility and resists against formatting attacks. The watermark informa...

2021

The colossal prominence of the World Wide Web in the mid 1990's shown the business capability of offering media assets through the computerized networks. Since business intrigues look to utilize the advanced organizations to offer computerized media revenue driven, they have a solid interest in ensuring their proprietorship rights. Since the danger of utilizing media data, advanced fabrications, and unapproved sharing (robbery) of computerized content has expanded among content makers, merchants and clients. Today mixed media data theft alone has exposed all the enterprises to multi-billion income misfortunes. Customary advanced substance security methods, for example, encryption and scrambling, alone can't give satisfactory insurance of copyrighted substance, in light of the fact that these advances can't ensure computerized content whenever they are decoded. One approach to debilitate illicit duplication is to embed data known as watermark, into possibly weak informati...