Security Assessment of Scalar Costa Scheme Against Known Message Attack in DCT-Domain Image Watermarking
محل انتشار: بیست و یکمین کنفرانس مهندسی برق ایران
سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 818
فایل این مقاله در 5 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICEE21_686
تاریخ نمایه سازی: 27 مرداد 1392
چکیده مقاله:
Security level analysis of watermarking techniques against intentional attacks receives more attention recently in watermarking theory. The most popular data hiding code usingin digital watermarking is the scalar costa scheme (SCS). In this paper, SCS is implemented for digital image watermarking inDiscrete Cosine Transform (DCT) domain. Then, Known Message Attack (KMA) is applied on SCS in order to estimate the secret key and evaluate practically the information theoretic security level of SCS. Empirical results show that practical security level of SCS is much lower than former theoreticalresult. Furthermore, it can be seen that the practical security level of SCS depends on the host statistics which hascontradiction with the former theoretical result.
نویسندگان
Reza Samadi
Ferdowsi University of Mashhad