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تحسين خوارزمية تشفير A5/1 بالاعتماد على تقنية الترشيح لتطبيق انترنيت الاشياء == Improvement of A5/1 encryption algorithm based on filtration technique for IoT Application

اسم المؤلف: زينب حمزة جاسم

اسم المشرف: ستار بدر سدخان المالكي

الموضوع العام: علوم الحاسبات

السنة: 2017

الموضوع الدقيق: علوم الحاسبات

الدرجة: ماجستير

الجامعة: جامعة بابل - كلية تكنولوجيا المعلومات - قسم البرامجيات

اللغة: الانكليزية

مكان الجامعة: بابل

الصفحات الاولى: 📎 28T781 - p.pdf

المستخلص: The Internet of Things (IoT) is an environment in which people, animals or objects are equipped with individual identities and have the ability to transmit data across the network without the need for human - to - human or human - to - computer interaction.Security of IoT is very important because it is used in many fields and will have a big impact on the IoT industry. Internet of Things is similar to conventional computer networks, so security requirements such as confidentiality, integrity, availability and non - repudiation must be taken into account in building a network environment. One of appropriate solutions for providing security in IoT is cryptography. At present, traditional cryptography solutions focus on producing high levels of security, but they are slow in speed, large in size and consume a loT of energy, ignoring the conditions of constrained devices that use in IoT. These devices require appropriate cryptographic algorithms to suitable their characteristics, and this considers as big challenge.In this thesis, we propose a modification of the A5 /1 stream cipher to Internet of Things (IoT) by adding a fourth register and applying a filtration function on registers to increase the linear complexity of the algorithm and to strengthen the linear combination function (XOR) with remain total number of registers is 64 - bit. A5/1 Stream cipher is considered an efficient implementation of hardware, but insecure for use in such IoT applications. So we take efficiency implementation of hardware of A5/1 to produce proposed algorithm with the highest security, also efficient in hardware, and suitable for application in resource devices environments such as the Internet of Things. To make sure that the proposed algorithm as lightweight and can be applied to the constrained devices used within IoT, we have