Every picture tells a story, but how do you know that a digital photo has not been manipulated to change the tale being told? A new approach to adding an encrypted watermark to digital images allows the an image to be validated against a pass key, according to research published in the International Journal of Signal and Imaging Systems Engineering.. Visible watermarks are routinely added to digital images as a form of copy protection, but their presence essentially destroys the picture, obliterating information within altered pixels in a way that cannot be reversed. Now, Dakshinamurthi Sivakumar and Govindarajan Yamuna of Annamalai University, in Tamil Nadu, India, have developed a new, reversible watermarking scheme. The system could be used initially for the authentication of military images. Inexpensive image editing software is now available that can be used to make essentially undetectable "photo realistic" changes to almost any photograph, the team explains. In a military setting it is important to prevent unauthorized manipulation of digital images and to be able to demonstrate credibility and provenance.. This paper introduces a novel reversible watermarking technique designed to ensure digital image authenticity while preventing unauthorized edits and preserving quality. Digital Watermarking, Image Security, Reversible Watermarking, Image Authentication. . LinuxSecurity.com Team
Steganography is a technique for embedding information in files such that it is not obvious that this information has been embedded. The technique is extensively used in putting digital watermarks in such things as digitized artwork, but it can also be . . . . Steganography is a technique for embedding information in files such that it is not obvious that this information has been embedded. The technique is extensively used in putting digital watermarks in such things as digitized artwork, but it can also be used to incorporate secure traffic into files. The first thing to realize is that not all files are equal. Executable (object) code, for example, is not suitable for embedding a hidden message into, as every bit is important and even the changing of one bit can cause the program to not execute correctly. However, for some data files this is not such a problem, and in these cases steganography can be successfully done. The link for this article located at Sierra Times.com is no longer available. . Steganography is a technique for embedding information in files such that it is not obvious that thi. steganography, technique, embedding, information, files, obvious. . LinuxSecurity.com Team
As part of an industry competition to test the security of a digital music copyright protection system developed by a group of entertainment and technology companies, Professor Felten was part of a group that says it successfully disabled the system. But . . . . As part of an industry competition to test the security of a digital music copyright protection system developed by a group of entertainment and technology companies, Professor Felten was part of a group that says it successfully disabled the system. But he said he was reluctant to make public the details of how it was done because the 1998 law made it a crime to manufacture or "offer to the public" a way to gain unauthorized access to any copyright-protected work that has been secured by a technology like encryption. "It is not clear the extent to which we're allowed to publish our results or discuss them in public," Dr. Felten told about 400 people at Georgetown University last week at a two- day conference sponsored by the Coalition for the Future of Music. Professor Felten's dilemma traces back to last fall, when he and colleagues at Rice University and the Xerox PARC research organization participated in a challenge sponsored by a group of entertainment and technology companies that calls itself the Secure Digital Music Initiative. The industry group is trying to design a so-called digital watermarking standard that would allow music to be distributed over the Internet while preventing it from being freely copied. To gauge the effectiveness of four proposed technologies, the group offered a $10,000 reward to be divided among participants who could remove the watermarks from the music files without compromising the quality of the sound. Free Registration may be required The link for this article located at NY Times is no longer available. . An electronic melody ownership safeguarding framework underwent trials in a contest showcasing vulnerabilities. Discover additional insights!. Digital Copyright Protection, MusicDRM, Watermark Security, Security Flaws, Music Industry Technology. . LinuxSecurity.com Team
SDMI is the music industry forum trying to build a system for protecting digital music against being illegal copying. The outfit launched the Hack SDMI challenge last month to invite the public to attack its digital watermark technology and possibly win . . . . SDMI is the music industry forum trying to build a system for protecting digital music against being illegal copying. The outfit launched the Hack SDMI challenge last month to invite the public to attack its digital watermark technology and possibly win a $10,000 prize. Computer scientists and electrical engineers at Princeton, along with outside teams led by graduates of Princeton's computer science program, claim that they were able to remove the watermarks placed in music files by SDMI, without significantly degrading the audio quality. The link for this article located at LinuxToday is no longer available. . Princeton's research team tackled SDMI's digital watermarking methods designed to protect music from piracy, uncovering key vulnerabilities in existing systems. Digital Watermark Protection, Music Industry Innovations, Audio Quality Challenges. . LinuxSecurity.com Team
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