Theses and Dissertations

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  • ItemOpen Access
    In Search of Buddhist Gujarat between Rhetoric and Reality
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2018) Sheth, Aarsh; Singh, Saurabh; Mazumdar, Madhumita; Pandya, Vishvajit
    It is for the last few years that the state of Gujarat is suddenly being promoted internationally as a Buddhist heritage destination. Several Buddhist heritage sites were identified at an international seminar in the year 2010 as tourist and pilgrim destinations. In a high profile promotional blitz that included a revamped Gujarat Tourism website, brochures and a much popular tourism promotional film featuring the celebrity actor Amitabh Bachchan, the Gujarat government under the then Chief Minister Shri Narendra Modi claimed that Buddhism had as much a presence in Gujarat as that in Bihar. This project was inspired by the compelling power of this tourism ad campaign and sought to follow the Buddhist heritage trail in Gujarat and see how these sites were perceived by followers of Buddhism on the one hand and by locals on the other. The objective was to understand how heritage promotion initiatives from the state resonated in actual social contexts and how tourism promotion rhetoric matched up with the reality on the ground. We went on a quest to discover this new dimension of Gujarat. We visited some of the sites only to realize that there is actually no movement in terms of the development of any of the presented sites as tourist destinations since the year 2010. Employing ethnographic methods and together with historical, political and sociological literature, we tried to understand the reality of Buddhist tourism in Gujarat, not as part of a broader religious or historical movement but rather as an “Invented tradition” created and promoted by the imperatives of tourism and politics.
  • ItemOpen Access
    Wireless LAN 802.11 security using elliptic curve cryptography
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2011) Singh, Saurabh; Das, Manik Lal
    IEEE 802.11 is a standard defines the specification of Wireless Local Area Network (WLAN), came into existence in 1997. As communication medium is wireless, security is a major concern to protect the data from adversary. Existing WLAN security is primarily based on Symmetric Key Cryptography (SKC). But, major disadvantage with SKC is establishment of secret key for secure data delivery. Public key cryptography(PKC) has many advantages over Symmetric key cryptography like key management key distribution over insecure channel etc. However, PKC requires a large key size in comparison to SKC to provide same level of security. This makes PKC costly operation and not suitable for the environment like WLAN where limited memory is available for WLAN devices. In recent years, Elliptic Curve Cryptography (ECC) has gained a lot of attention from research communities, because ECC seems to promise simillar or a better level of security with smaller key size in comparison with conventional PKC (e.g. RSA, DSS). These features make them workable under constraint environment. In this thesis, we have studied the security evolution of WLAN 802.11 with Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA). We have observed some limitations of WEP and WPA. We, then, present a new protocol using ECC for mutual authentication and session key establishment. We compare our protocol with simillar protocols for wireless security and show that the proposed protocol is efficient w.r.t. space, bandwidth and computational cost at Client side. The security analysis of proposed protocol shows that it may achieve forward secrecy with respect to Client, joint key control, key integrity and resists guessing, replay, impersonantion attacks. A thorough forrmal security analysis is required to be done.