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Register a new userImplementation of a Proposal Encryption Algorithm for Voice over Internet Protocol (VoIP)
تطبيق خوارزمية تشفير مقترحة لتشفير الصوت عبر بروتوكول الانترنت
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Added by
University of Mosul ورقة بحثية
Publication date
2021
fields
Informatics Engineering
and research's language is
العربية
Created by
Shamra Editor
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إن عملية نقل إشارة الكلام بسرية عالية وبأسرع وقت عبر شبكة الانترنيت يحتاج إلى تطوير تقنيات كبس وتشفير إشارة الكلام، وذلك لتقليل حجمها وجعلها غير مفهومة للأشخاص غير المخولين بالاستماع إليها. تم في هذا البحث تصميم نظام لتشفير الصوت عبر بروتوكول الانترنيت (VoIP) واستخدام تقنيات الكبس لغرض تقليل حجم البيانات وإرسالها عبر الشبكة، إذ تم استخدام خوارزمية (A_law PCM) في كبس بيانات الصوت. ومن ثم تم تطبيق خوارزميتي التشفير المتكرر الثلاثي القياسي (TDES)، ومقياس التشفير المتقدم (AES). تم اقتراح خوارزمية تشفير جديدة تعتمد في أساس عملها على نظام التشفير الكتلي، أُطلق عليها اسم خوارزمية المباشر والمعكوس، حيث تعتمد على ثلاث خطوات أساسية وهي توسيع المفتاح الأولي، وتوجيه التشفير لكل دورة باتجاه معين، وكذلك تبديل الـ (Bytes) حسب صندوق التعويض المستخدم في خوارزمية AES وذلك بجعله متحركاً. تم حساب نسبة الكبس بصورة عامة وكانت 50%، وتمت مقارنة نتائج معامل الارتباط للخوارزمية المقترحة مع نتائج خوارزميتي (AES, TDES).
The process of transfer a speech signal by high confidentially and as quickly as possible through the Internet needs to develop compression and encryption technology for a speech signal, so as, to reduce its size and make it understandable to persons not authorized to listen to. A system was designed to encrypt the voice over Internet Protocol (VoIP) and use compression technique for the purpose of reducing the size of data and send it over the network, (A_law PCM) algorithm was used the to compress audio data. Then algorithms of Triple Data Encryption Standard (TDES) and Advanced. Encryption Standard (AES) were applied. A new encryption algorithm was proposed based in its work on the block cipher encryption system called the Direct and Reverse algorithm, which based on three basic steps, firstly expand the initial key, secondly direct the encryption of each round in one direction, and finally substitute (Bytes) as used in the Compensation Box in AES algorithm by making it moving. In general compression ratio was calculated and it was (50%) and the results of the correlation coefficient for the proposed algorithm was compared with the results of (AES, TDES) algorithms.
References used
.الغريري، شهد عبد الرحمن حسّو، 2003، "تصميم نظام حماية هجين وتطبيقه على النصوص"، رسالة ماجستير، كلية علوم الحاسبات والرياضيات، جامعة الموصل.
حليم، علياء موفق عبد المجيد، 2003، "تشفير إشارة الكلام بطريقة البعثرة"، رسالة ماجستير، كلية علوم الحاسبات والرياضيات، جامعة الموصل. .[3 قدو، سجى جاسم محمد، 2004، "كبس إشارة الكلام بواسطة استخلاص الخواص" ، رسالة ماجستير، كلية علوم الحاسبات والرياضيات، جامعة الموصل.
Ali. Dia Mohamad, 2007, “Analysis and Design of Voice over Internet Protocol (VoIP) Accelerato”, PH.D. Thesis, College of Engineering, University of Mosul.
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تطبيقات الزمن الحقيقي
التحكم بالازدحام
Congestion Control
تطبيقات الزمن غير الحقيقي
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خوارزمية البداية البطيئة
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خوارزمية إعادة الإرسال السريع و الاستعادة السريعة
Real Time application
non-real time application
Queue disciplines
Slow start algorithms
Congestion avoidance algorithms
Fast retransmit and Fast recovery
المزيد..
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