پديد آورنده :
گيوه كي، كاميار
عنوان :
ارائه ي يك روش پنهان كاري غير باينري پر ظرفيت با امنيت بالا
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
معماري كامپيوتر
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر
صفحه شمار :
يازده، [102]ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
مسعود عمومي
توصيفگر ها :
بازدهي جاسازي , نمودار مشخصه ي عملكرد گيرنده
استاد داور :
محمد دخيل عليان، نادر كريمي
تاريخ ورود اطلاعات :
1395/08/10
دانشكده :
مهندسي برق و كامپيوتر
چكيده انگليسي :
103 A high payload non binary steganography method with high security Kamyar Givaki k givaki@ec iut ac ir Data of Submission Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan Iran Degree Master of Science Language PersianSupervisor Dr Masood omoomi omoomi@cc iut ac irAbstractSteganography is a method for securing the connection between two parties in which theconfidential data is hidden in an innocent media e g voice still or motion pictures etc The main purpose of steganography is hiding the presence of confidential data In contrastwith cryptography that makes the confidential data unreadable by malicious third party insteganography presence of confidential data is hidden from others Some parameters suchas embedding rate and embedding efficiency are normally used to evaluate effectiveness ofa steganography method Binary steganography methods e g LSB R and LSB M generally have low embedding rateand embedding efficiency Using non binary number systems can increase the embeddingrate therefore improving the embedding efficiency Non binary methods e g EMD and Tnare some examples of using non binary spaces in data embedding In spite of someimprovements by using EMD method this method does not use all capacity in embeddingrate Furthermore Tn method is a high payload method with high embedding efficiencyvalue However this method needs using a big embedding table to perform embeddingprocess In this thesis to solve these problems a method for data embedding with ternarysymbols is proposed In the proposed method a characteristic function is defined to embedtwo trits of confidential data in two pixel of cover image Simulation results show that theproposed method is a high payload scheme with relatively high embedding efficiency Thismethod also does not reduce the quality of the cover image in embedding process Theproposed method can strongly resist against CA HCF COM steganalysis method Keywords steganography non binary spaces embedding efficiency ROC
استاد راهنما :
مسعود عمومي
استاد داور :
محمد دخيل عليان، نادر كريمي
