Enhanced secured voice over internet protocol

العناوين الأخرى

رفع كفاءة السرية للمكالمات الصوتية عبر شبكة الانترنت

مقدم أطروحة جامعية

Abu Shuqayr, Umar M. A.

مشرف أطروحة جامعية

al-Ajluni, Naim

أعضاء اللجنة

Fadil, Muayyad A.
al-Bayati, Hilal M.
al-Hammuz, Sadiq O.

الجامعة

جامعة عمان العربية

الكلية

كلية العلوم الحاسوبية و المعلوماتية

القسم الأكاديمي

قسم علم الحاسوب

دولة الجامعة

الأردن

الدرجة العلمية

دكتوراه

تاريخ الدرجة العلمية

2006

الملخص الإنجليزي

Voice over Internet Protocol (VoIP) is the technology that enables voice packets transmission over Internet Protocol (IP).

Security is of concern whenever open networks are to be used.

VoIP suffers from packet latency and loss due to the nature of IP network.

Cryptographic systems may be used to achieve VoIP security, but their impact on the Quality of Service (QoS) should be minimized.

The fact that most of the known encryption algorithms are computationally expensive results in a significant amount of time added to packet delay.

VoIP is usually used by public users resulting in a key exchange problem; a trusted intermediate authority normally takes this responsibility.

In this research, VoIP security was enhanced via a proposed cryptographic system.

The proposed solution consists of a simple, but strong encryption/decryption algorithm as well as an embedded method to exchange the keys between users.

In this research, new key is generated in a random fashion from a pool of master keys and then used to encrypt each new voice packet to strengthen the security level.

The generated keys passed four implemented randomness statistical tests.

Key exchange is carried out by mixing some information about the key with the ciphered voice data; this information is enough for a target receiver to regenerate/extract the key.

The proposed solution was implemented and tested, the results showed that the required time for the security processes is minimized compared to some known algorithms.

The analysis improved that the security level has a direct relationship with the number of possible keys that can be generated from the master key; this number can be increased by increasing the value range of the factors that affect this number.

Finally, a delay budget for VoIP on variety network configurations was presented for a variety of codecs; which can be used as guidance for VoIP developers

التخصصات الرئيسية

هندسة الاتصالات

الموضوعات

• شبكات الحاسوب
• الإنترنت

عدد الصفحات

163

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-528746