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Register a new userIncreasing the immunity of AES against the algebraic attacks by using the dynamic key dependent S-Boxes and studying its effect on AES immunity against the classic attacks
رفع مناعة AES ضد الهجمات الجبرية باستخدام جداول التبديل المعتمدة على المفتاح و دراسة تأثير هذه الجداول في مناعة AES ضد الهجمات التقليدية
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Added by
Damascus University ورقة بحثية
Publication date
2007
fields
Mathematics
and research's language is
العربية
Created by
Shamra Editor
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بنيت خوارزميات التعمية الحديثة بالاعتماد على الفرضية الآتية: «تعتمد الطرائق التقليدية في تحليـل المعميات (التحليل الخطي، التحليل التفاضلي،.....) على خصائص احتمالية تجعل أمـن المعمـي يـزداد بشكل أسي مع عدد دورات المعمي». لذلك فهذه المعميات ليس لها المناعة المطلوبـة ضـد الهجمـات الجيرية التي أصبحت أقوى بعد تطوير خوارزمية XSL .في هذا البحث سوف نقدم بعض الطرائق لرفع مناعة المعمي AES ضد الهجمات الجبرية ثم سندرس تأثير هذا التعديل في مناعة المعمي.
The security of several recently proposed ciphers relies on the fact:" that the classical methods of cryptanalysis (e.g. linear or differential attacks) are based on probabilistic characteristics, which makes their security grow exponentially with the number of rounds". So they haven’t the suitable immunity against the algebraic attacks which becomes more powerful after XSL algorithm. in this research we will try some method to increase the immunity of AES algorithm against the algebraic attacks then we will study the effect of this adjustment.
References used
Daemen, J., and Rijmen, V. (2001). "The Design of rijndael AES – The advanced encryption standard", Springer
"Announcing the advanced encryption standard (AES)",Federal Information Processing Standards Publication 197, 2001 URL:http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf
Rukhin, A., Soto, J., Nechvatal, J., Smid, M., Barker, E., Leigh, S., Levenson, M., Vangel, M., Banks, D., Heckert, A., and Dray, J. (2001)."A statiistiical test suiite for random and pseudorandom number generators for cryptographiic appliicatiions", URL:http://www.csrc.nist.gov/publications/nistpubs/800-22/sp-800-22-051501.pdf
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Cryptography has a long and fascinating history.
The predominant practitioners of the art were those associated with the military, the diplomatic service and government in general.
Cryptography was used as a tool to protect national secrets and strategies.
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There is an additive identity (‘zero’), there is a multiplicative identity i.e. ‘one’.
There is an additive inverse (minus the number), and there is a multiplicative inverse for all numbers except the additive identity i.e. except for ‘zero’.
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