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Article
Biometric Privacy Using Secret Image Sharing

Authors: A.T. Hashim --- D.A. Noori
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2017 Volume: 35 Issue: 7 Part (A) Engineering Pages: 701-708
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Biometric technique includes uniquely identifying person based on their physical or behavioral characteristics. It is mainly used for authentication. Iris scanning is one of the most secure techniques among all biometrics because of its uniqueness and stability (i.e., no two persons in the world can have same iris). For authentication, the feature template in the database and the user template should be the same method for extracting iris template in this proposed system. Also storing the template in the database securely is not a secure approach, because it can be stolen or tampered. To deal with this security issue, the proposed system is securely storing the template in the database by firstly using randomness to scramble the bits of template based on chaos system. Secondly, a hiding technique is utilized to hide the scrambled templates in host images randomly. Finally, a secret sharing based on linear system is implemented on the iris template in database to protect it and adding extra layer of iris authentication system. The proposed secret sharing system has been generated a meaningful shares which overcomes the problem in traditional methods. Also in proposed system, two approaches of iris extraction have been presented.


Article
Sensitivity of Initial Conditions and Parameters in A new Four-dimension Hyper Chaotic system
حساسية الشروط الابتدائية والمعلمات على النظام الفوضوي المفرط الجديد رباعي الابعاد

Authors: Hayder Abbood. Qasim حيدر عبود قاسم --- Sadiq A. Mehdi صادق عبد العزيز مهدي
Journal: Iraqi Journal of Information Technology المجلة العراقية لتكنولوجيا المعلومات ISSN: 19948638/26640600 Year: 2018 Volume: 8 Issue: 4 اللغة الانكليزية Pages: 157-163
Publisher: iraqi association of information الجمعية العراقية لتكنولوجيا المعلومات

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Abstract

In this paper a chaotic behaviour for a new hyper chaotic system is explore through sensitivity, it is well known that the chaotic systems characteristics with high sensitivity to little difference in the initial conditions, the chaotic behaviour for the new dynamical system will search through its sensitivity by utilizing Mathematica Program, where small change to initial condition can grows and become great when time become large.

في هذا البحث السوك الفوضوي سيتم بحثه لنظام الفوضوي المفرط الجديد من خلال الحساسية ، وكما هو معروف ان الانظمة الفوضوية المفرطة تكون شديدة الحساسية للتغيير الطفيف في الشروط الابتدائية والمعلمات ، حيث سيتم احداث تغيير بسيط في الشروط الابتدائية والمعلمات لنظام الفوضوي المفرط الجديد وبيان مدى تأثير ذلك على السلوك المستقبلي للنظام الفوضوي باستخدام برنامج الماثيماتيكا .

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