Theses and Dissertations

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    SHELBRS: Location-Based Recommendation Services using Switchable Homomorphic Encryption
    (2021) Jain, Mishel; Singh, Priyanka
    Location-Based Recommendation Services (LBRS) has seen an unprecedented rise in its usage in recent years. LBRS facilitates a user by recommending services based on his location and past preferences. However, leveraging such services comes at a cost of compromising one’s sensitive information like their shopping preferences, lodging places, food habits, recently visited places, etc. to the thirdparty servers. Losing such information could be crucial and threatens one’s privacy. Nowadays, the privacy-aware society seeks solutions that can provide such services, with minimized risks. Recently, a few privacy-preserving recommendation services have been proposed that exploit the Fully Homomorphic Encryption (FHE) properties to address the issue. Though, it reduced privacy risks but suffered from heavy computational overheads that ruled out their commercial applications. Here, we propose SHELBRS, a lightweight LBRS that is based on Switchable Homomorphic Encryption (SHE), which will benefit the users as well as the service providers. A SHE exploits both the additive as well as the multiplicative homomorphic properties but with comparatively much lesser processing time as it’s FHE counterpart. The performance of our proposed scheme is analyzed with the other state-of-the-art approaches without compromising security
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    City flavours : Reconciliation of tradition and modernity in Ahmedabad
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2007) Padia, Bhakti; Mazumdar, Madhumita; Gupta, Anirban Dutta
    ‘City Flavours’ is a multimedia project, which intends to communicate the idea of ‘reconciliation of tradition and modernity in the city of Ahmedabad’ through the eating culture of its citizens. While the story is being told using food, the main focus remains on farsaan as a popular category of Gujarati cuisine. The message is conveyed through the medium of a documentary film, which is supplemented by a brief interactive segment. This document is a compilation of the design process followed in the making of ‘City Flavours’. I have divided the document in two main sections – Research and Implementation. The Research talks about collecting and analyzing the content for the product. It describes the procedure followed in deriving the concept and linking together of accumulated information in order to create knowledge. The Implementation describes the manner in which various mediums are used to communicate the idea.