پديد آورنده :
ملك زاده، مريم
عنوان :
بررسي و تحليل الگوريتم هاي رمز مبتني بر نگاشت هاي آشوبي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مخابرات﴿شبكه﴾
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر
صفحه شمار :
ده،120ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
محمد دخيل عليان
توصيفگر ها :
رمز نگاري , رمز قالبي , جعبه جانشيني
تاريخ نمايه سازي :
9/7/92
استاد داور :
محمد علي خسروي فرد، رضا رضائيان فراشاهي
دانشكده :
مهندسي برق و كامپيوتر
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
134 Analysis of Cryptographic Algorithms Based on Chaotic Maps Maryam Malekzadeh m malekzadeh@ec iut ac ir Date of Submission 2013 03 11 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Mohammad Dakhilalian mdalian@cc iut ac ir Abstract In recent years a considerable number of chaotic cryptosystems have been proposed The properties of chaotic systems such as ergodicity random like behavior and sensitivity to initial conditions are useful in cryptography The crucial points in chaotic cryptography are continuous value information and the usage of continuous value systems which may operate in continuous or discrete time When speaking about conventional cryptography it means cryptosystems which work on discrete values and in discrete time In this thesis we have divided the algorithms into block cipher stream cipher and single character categories At first several stream and single character algorithms have been investigated but because of importance of block ciphers these algorithms were studied further In block ciphers the substitution boxes S boxes are their core component and have been widely used in almost all block ciphers The discussion of block ciphers based on chaotic maps were studied into aspects designing S boxes and designing of block cipher that these two issues are investigated separately Accordingly the first few S boxes based on chaotic map were introduced and investigated their design criteria As a result by comparing criteria of S boxes based on chaotic maps and AES S box which considered ideal it was found that the statistical criteria of S boxes based on chaotic maps are much weaker than AES S box In addition we introduced several block cipher algorithms based on chaotic maps which have been proposed in recent years and one of them were analyzed and based on its flaws we introduced a novel attack on it Keywords Chaotic maps Cryptography Block cipher S boxPDF created with pdfFactory trial version www pdffactory com
استاد راهنما :
محمد دخيل عليان
استاد داور :
محمد علي خسروي فرد، رضا رضائيان فراشاهي
