کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10349136 | 862754 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A crisscross checking technique for tamper detection in halftone images
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
As the race for digital technological advancements accelerates, foremost is the troubling concern for better protection for digital data. Unequivocally, detecting for tamper in data poses a great challenge to information security and image processing. In this paper, a crisscross checking technique is proposed for tamper detection in halftone images. First, a host image is divided into NÂ ÃÂ N blocks. The individual blocks will be scrambled with a random number into code-strings which will be concatenated into rows and columns code-streams. Finally, these code-streams will be applied to the MD5 and RSA algorithms to generate encrypted signed messages that will be hidden in the blocks. For the detection process, the row and column blocks will be checked for these signed messages which will be extracted, decrypted and compared to the rows and columns blocks of the image for dissimilar bits as sign of tamper. The tampered row and column blocks will be crisscrossed and the intersecting blocks will be identified as tampered areas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems and Software - Volume 76, Issue 3, June 2005, Pages 287-295
Journal: Journal of Systems and Software - Volume 76, Issue 3, June 2005, Pages 287-295
نویسندگان
Jeanne Chen, Tung-Shou Chen, Yu-Mei Pan,