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Extending the Authentication Mechanism in Ip Multimedia Subsystems for Universal Mobile Telecommunication System

Thesis Info

Access Option

External Link

Author

Ashraf, Humaira

Supervisor

Mohammad Sher

Program

PhD

Institute

International Islamic University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Computer Science

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/7857/1/Humaira%20Ashraf%20full%20final%20complete%20%20thesis.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727756755

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IP multimedia subsystem (IMS) is an emerging platform for provisioning multimedia services (e.g., data, voice, and video) in 4G/5G networks. IMS authentication is an important procedure which grants legitimate users to access multimedia services. However, periodic re-authentication of mobile users results in significant signaling traffic overhead due to complete execution of hectic procedure. Moreover, signaling protocol such as SIP overlooks user’s confidentiality by leaving unprotected public and private identities. In IMS each user entering from another network like UMTS or VOLTE has to authenticate itself. However, it already passed through the same authentication process in its own network. Therefore, IMS core entities are affected by high signaling that could be a source of congestion. . The Session Initiation Protocol (SIP) is used in IMS to establish and manage sessions. It is easy for a hacker to attack IMS with flooding SIP messages. However, IMS does not provide any functions to prevent such kind of attacks. This research presents a secure aauthentication protocol (SAP) which creates a secure channel through the deployment of KMC (Key Management Center) for transmitting user identities; ECC (Elliptic curve cryptography) is used for key generation that provides reduced encryption and decryption time than existing schemes for IMS. FAP strives to minimize signaling overhead of periodic re-authentications. Once a user completes authentication, FAP grants a valid ticket for a particular time which can be used for subsequent re-authentications until it expires. This research introduce a header in SIP to hold the ticket. This research employ protocol composition logic for formal modeling and verification of SAP. The performance of SAP, FAP is validated through FOKUS IMS test bed. The results demonstrate the performance appraisal of FAP compared to other contemporary schemes in terms of signaling overhead, bandwidth consumption and response time. This research presents a Low congestion and Certificate based One-pass Authentication Protocol (COAP) that avoids duplication of authentication steps and makes its authentication efficient through the use of digital certificates. An authenticated user is allotted a certificate to restrict the repetition of complete authentication procedure until the certificate expires. COAP results in reduction of signaling traffic, which eliminates v the congestion problem, it also reduces bandwidth and delivery cost which make this scheme more efficient in terms of bandwidth consumption. An intrusion detection system is designed where a pair of subsystems is working, one is spoofing detection and prevention subsystem and other is flooding detection and prevention subsystem. A zero-watermarking scheme detects the spoofing attack.Watermark embedding is done by the original author and extraction done later by KMC to prove ownership. The flooding detection system is working on misuse rules and anomaly detection algorithms which provide successful detection and prevention for IMS and VOLTE environment. The results has shown that better than other schemes it is compared to i.e. when the no of requests are 30 the detection rate is 90.19 however, when no of request are 40 the accuracy rate of the proposed scheme is 100 percent.
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حرف تمنا

’’ارضِ اقبال آ فاقیت کے آ ئینے میں‘‘ڈاکٹر نصیر احمد اسد کے تحقیقی وتنقیدی مضامین کا اولین تخلیقی مجموعہ ہے ۔اسے ابتدائی کاوش کے نقطہء نظر ہی سے دیکھتے ہیں تو ان کی محنت و لگن اور ادبی ذوق و شوق کی داد دینی پڑتی ہے کہ انہوں نے جس تن دہی سے اس کام کو پایۂ تکمیل تک پہنچایا ہے اسے مدنظر رکھتے ہوئے یہ بات پورے وثوق سے کہی جاسکتی ہے کہ خوب سے خوب کرنے کی جستجو ان کی فطرتِ ثانیہ ہے۔
    اس کام کے حوالے سے ایک بات خاص طور پر یہ محسوس ہوئی کہ ان میں سیکھنے کا رویّہ قابل رشک حد تک پایا جاتا ہے اور وہ اپنے آ پ کو بہت کچھ سمجھنے کے خبط سے پاک ہیں اوریہ صرف ادب ہی سے خاص نہیں بلکہ زندگی کا کوئی بھی شعبہ ہو ترقی کی بنیاد یہی رویہ ہے۔چنانچہ جس انداز سے وہ سفر شوق طے کر رہے ہیں امید ہے کہ ایک دن یہ نام ادبی حوالہ ہو گا۔
    ان کے مقالات میں تنقیدی اور تقابلی مطالعہ اپنے تہذیبی و ثقافتی پس منظر سے اُبھرتا ہےاور وہ افراد اور رویّوں ہر دو میں اشتراکات اور اختلافات اور مستقبل کے امکانات کو اپنی روایت  میں شناخت کرتے اور قدر کا تعیّن کرتے ہیں۔

ڈاکٹر سید عامر سہیل
چئیر مین شعبہ اردو ، اسلامیہ یونیورسٹی، بہاولپور

البنوك الإسلامية ودورها في الاقتصاد التركي

Within the global financial system, Islamic banks have a small but growing share, and today they have become an integral part of the global financial system. Islamic banks in the world have been operating according to interest-free financing techniques, which are mainly developed on sharing of profits and losses in accordance with the difference principles between purchase and sale. However, the presentation of financial products in Turkey is conducted by ‘participation banks’ operating according to Islamic rules. Participation banks play a vital role in economic development by gaining the unused funds to the economy. This study will examine the performance of the participation banks operating in Turkey and their increasing share in the Turkish finance sector will be assessed. The work sheet will contain three demands: First: Islamic banks and the difference between them and the definition of riba-based banks. Second: The history of Islamic banks in Turkey. Third: The role of Islamic banks in the sustainable development of the Turkish economy.

Effect of E-Learning As a Supplement to Traditional Method of Learning in Biology at Secondary School Level

The idea of E-Learning merely means electronic learning. It is multifaceted. It includes all forms of electronic devices that are involved in teaching and learning situation to make learning easy. The devices include computer and other audio-visual services. E-Learning encourages individual teachers to find out new ways of integrating technology and resources into their classroom settings. In education the use of the combination of traditional and E-Learning results in a new learning environment called Blended learning environment. It is, therefore, the current study is performed to inquire about the effectiveness of E-learning on the academic outcomes of the students. The study was focused on its objective of comparative analysis of the traditional means of education with the modern innovative way of teaching and learning known as E-learning. In this regards the best research strategy of experimental approach, pre-test and post-test control group deign, was adopted. Two government’s girls high school of Bannu, KP, of Biology students were taken as sample for the study. A pre-test was administered for the formation of two groups i.e.Control group and experimental group. The objective of the pre-test was to know prior knowledge of each student and to justly equalize the both groups.For the period of four week of teaching to both groups was equally done only with the exception of E-learning as a supplemental treatment to the experimental group was additionally provided. After the treatment in the stipulated time period, a post-test was taken from both groups to judge the effectiveness of E-learning method as compared to the face to face traditional method of teaching.Mean, standard deviation and t-test were used to determine the performance of both groups. Experimental group of the study performed well as compared to the control group which signifies the effectiveness of the E-learning as a supplement to usual teaching method. The new approach of teaching based on E-Learning was recommended as supplement to traditional method for instruction in secondary schools. However, it was suggested that teachers should be exposed to the new technology of E-Learning not only in the subject of Biology but also in other subjects.