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Matrix Based Hybrid Key Establishment Schemes for Securing the Communication in Group Based Wsn

Thesis Info

Access Option

External Link

Author

Ullah, Ata

Program

PhD

Institute

International Islamic University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Computer Science

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/2774/1/PhD%20Research%20Thesis%20By%20Ata%20Ullah-52-FBAS-PHDCS-F09.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727786377

Similar


Secure key distribution is extremely crucial in commercial and military applications of WSN and wireless sensor and Actor networks (WSAN) for providing confidentiality to messages shared among sensors. It becomes more challenging when two cluster heads cannot communicate directly due to communication range. In this case, an ordinary node located at cluster boundaries to play a role of gateway node that has established keys in both clusters. Entire communication between clusters is transmitted through these gateway nodes. The main problem is that compromised gateway node exposes all keys transmitted through that node and relevant links are compromised before establishment. We have proposed Key Distribution using Key Fragmentation (KDKF) scheme that solves the problem. Sender divides the actual key into fragments using key fragmentation algorithm and sends these using gateway nodes as intermediaries. Receiver Node assimilates these key fragments using XOR operation to interpret actual key. KDKF scheme provides deployment scenarios and detailed protocol description to elaborate the message structure to exchange security credentials between distant nodes. Moreover, formal modeling is performed using Rubin Logic to verify and analyze the proposed protocol. Performance and resilience of protocol is validated through simulations using ns-2.35. It proves that a compromised gateway node cannot retrieve the actual key and only gets the key fragment. To assimilate the single actual key, adversary needs to subvert exactly those gateway nodes that participated in key fragments transmission. In contemporary schemes, all future keys transmitted through compromised gateway nodes were exposed. Results proof that KDKF is much more resilient against compromising attack and keys in network are not exposed to adversary. To further improve the communication overheads and better connectivity, we have proposed a Matrix based Key Establishment Scheme (MKES) where actual key is never transmitted on network. In MKES, each node is pre-loaded with one row and one column from a matrix. After deployment, indices for row and column are exchanged between the two nodes and values at intersection of row and column index is used to calculate the key on each node. It can establish keys with neighboring nodes, cluster heads, SINK and even across different WSN using same matrix values. Results are produced for analyzing resilience, storage and communication costs to prove dominance of MKES. It is also tested by deploying on android for securing messaging. Moreover, MKES is used in Critical Data Reclamation (CDR) that provides aggregated data extraction in isolated clusters where cluster head (GH) is destroyed. GH receives the query from sink node to send towards the cluster members and then transmits the aggregated Ata Ullah 52-FBAS/PHDCS/F09 vAbstract response to sink node. In the absence of GH, gateway nodes located at common boundary of neighboring clusters communicate with the neighboring GHs to transmit critical data to sink in a timely manner until a new GH is not added in the cluster. A secure protocol scenario is discussed in a stepwise manner to add new GH to the network. Proposed schemes is simulated and evaluated for Density of cluster, Connectivity, Resilience, Storage and Communication overhead.
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اشفاق احمد

اشفاق احمدرجحان ساز شخصیت
پیدائش:
معروف دانشور، ادیب، ڈرامہ نگار، تجزیہ نگار، سفر نامہ نگار اور براڈ کاسٹر جناب اشفاق احمد خان بھارت کے شہر ہوشیار پور کے ایک چھوٹے سے گاؤں خان پور میں ڈاکٹر محمد خان کے گھر 22 اگست 1925ء کو بروز پیر پیدا ہوئے۔
تعلیم:
اشفاق احمد کی پیدائش کے بعد اْن کے والد ڈاکٹر محمد خان کا تبادلہ خان پور سے فیروز پور ہو گیا۔ اشفاق احمد نے اپنی تعلیمی زندگی کا آغاز اسی گاؤں فیروز پورسے کیا۔ اور فیروز پور کے ایک قصبہ مکستر سے میٹرک کا امتحان پاس کیا۔اشفاق احمد نے ایف۔ اے کا امتحان بھی اسی قصبہ فیروز پور کے ایک کالج ‘‘رام سکھ داس ’’ سے پاس کیا۔ اس کے علاوہ بی۔اے کا امتحان امتیازی نمبروں کے ساتھ فیروز پور کے ‘‘آر، ایس،ڈی ‘‘RSDکالج سے پاس کپا۔
پاکستان ہجرت:
قیام پاکستان کے بعد اشفاق احمد اپنے خاندان کے ہمراہ فیروز پور (بھارت) سے ہجرت کر کے پاکستان آ گئے۔ پاکستان آنے کے بعد اشفاق احمد نے گورنمنٹ کالج لاہور کے ‘‘شعبہ اردو ’’ میں داخلہ لیا۔یہاں معروف اساتذہ سے علم حاصل کیا۔اْس زمانے میں بانو قدسیہ نے بھی ایم۔ اے اردو میں داخلہ لیا۔ یہ وہ دور تھا جب اورینٹل کالج پنجاب یونیورسٹی میں اردو کی کلاسیں ابھی شروع نہیں ہوئی تھیں۔
شادی:
جن دنوں اشفاق احمد گورنمنٹ کالج لاہور میں ایم۔ اے اردو کے طالب علم تھے۔ بانو قدسیہ ان کی ہم جماعت تھی۔ ذہنی ہم آہنگی دونوں کو اس قدر قریب لے آئی کہ دونوں نے شادی کا فیصلہ کیا۔ان کے والد ایک غیر پٹھان لڑکی کو بہو بنانے کے حق میں نہ تھے۔جس کی وجہ سے شادی کے بعد ان کو مجبوراً اپنا گھر چھوڑنا پڑا۔
تصانیف:
اشفاق احمد کی تصانیف میں افسانے، ناول، ٹی وی ڈرامے، ریڈیائی ڈرامے، فیچر اور سفر نامے شامل...

نبی کریم ﷺ کے "نسب مطہرہ" سے متعلق مارگولیتھ کے خیالات کا تنقیدی جائزہ

This research article is based upon critical analysis of D.S Margoliouth’s indictment regarding pious lineage “Nasb e Muṭahharra”. Generally Orientalists have tried to affect the image of the Prophet Muḥammad (s.a.w) and prevailed uncertainties. It affects a large number of Muslim Scholars, intellectuals and youngsters because Orientals’ are well aware that Muslims cannot be defeated in battle-fields unless they are defeated in the field of faith and ideology. Our aim is to protect less aware Muslims, intellectuals and youngsters form the pseudo and grimy views of the Orientalists. Like other prejudice Orientalists D.S. Margoliouth have also indictments regarding lineage (Nasb e Muṭahharra) in his book “Muḥammad and The Rise of   Islam”.  Margoliouth argue with texts of Qur’ān and Ḥadith, without having any relation with the passage, to identify the essence of his ill well, hatred and prejudice with in the eyes of Muslims and common readers at large. This article concern five allegations of D.S. Margoliouth on the lineage “Nasb e Muṭahharra” and concludes that he failed to maintain his objectivity in the description of lineage “Nasb e Muṭahharra”.

Raman and Fluorescence Spectroscopy Based Studies of Extra Virgin Olive Oil Evoo and Desi Ghee

Raman and Fluorescence spectroscopic techniques have been employed for studying the temperature effects on the molecular composition of extra virgin olive oil (EVOO). In addition, both techniques have also been employed for the characterization of Desi Ghee (liquefied butter) obtained from Buffalo milk along with the effects of temperature on its molecular composition. Raman spectra of EVOO samples has been obtained at excitation wavelength of 785 nm. Intensity ratio of Raman bands at 1267 cm-1 and 1302 cm-1 have been used to determine the loss of unsaturation in heated EVOO samples as compared to nonheated ones. Similarly, Fluorescence emission bands at 380, 440, 455 and 525 nm are labelled for vitamin E, band at 673 nm is assigned to chlorophyll, band at 525 nm is assigned to beta carotene. As a result of heating, emission bands at 525 nm got affected most revealing deterioration of beta carotene and vitamin E. The ratio between the sum of intensities of fluorescence bands at 380, 440, 470, 525 nm to 673 nm from heated and non-heated EVOO samples has been used to determine the deterioration of beta carotene and vitamin E contents. Results of both Raman and Fluorescence spectroscopic analysis have suggested a temperature range from 140 to 150 oC reasonably safe for cooking/frying of food with EVOO. In addition, EVOO can be heated for longer period of time up to 30 minutes but with the passage of time it deteriorates. However, in pressure cooker EVOO can be used for comparatively longer times up to 60 minutes. It has also been found that one time use of EVOO is better for cooking within defined temperature range and its reuse may be avoided. In conclusion, EVOO can be safely used for frying/cooking in the defined cooking range with proper management of heat source. Moreover, for the classification of heated and non-heated EVOO samples, principle component analysis (PCA) has been employed which differentiate the samples on the basis of their spectral differences. Similarly, Raman spectra at 785 nm depicted molecular composition of DG with prominent Raman bands around 1125 and 1440 cm-1 labelled for saturated fatty acids, 1258, 1270 and 1300 cm-1 assigned to unsaturation, 1525 cm-1 represents beta carotene and 1655 cm-1 is labelled for isomers of conjugated linoleic acid (CLA). The variations in the intensity ratio of Raman bands at 1258/1270 cm-1 indicates the loss of unsaturation and at 1440 cm-1 and 1650 cm-1 exhibit degradation of valuable lipids and CLA contents as a result of heating. In addition, Fluorescence spectra of ghee samples obtained at excitation wavelength of 280 and 410 nm showed that DG is enriched with CLA, vitamin-A and small quantities of vitamin D, E and K. Further, heating analysis has revealed that Ghee remains stable around a temperature range of 140-150 oC when heated for a time period of 30 minutes. Principal component analysis (PCA) has been used for the classification of overlapping spectral data which was difficult to differentiate visually. Results of both Raman and Fluorescence spectroscopy have suggested a temperature-range from 140 to 180 oC considered safe for household cooking/frying purposes using DG. Conclusively, it is found that both EVOO and DG show negligible deterioration of their natural molecular composition when heated at temperature range from 140-150 oC. Therefore, this temperature range sounds good for cooking/frying with EVOO and DG. Moreover, both EVOO and DG start getting oxidized more at temperatures from 180-200 oC with the evolution of secondary oxidation products and become rancid at 250 oC.