Abstract
Onset of cloud computing allowed various IT services to be outsourced to cloud service providers (CSP). This includes the management and storage of users’ structured or unstructured data called Database as a Service (DBaaS). However, users need to trust the CSP to protect their data, which is inherent in all cloud-based services. Enterprises and Small-to-Medium Businesses (SMB) see this as a roadblock in adopting cloud services because they do not have full control of the security of the stored data on the cloud. Due to these security issues, one possible solution for the data owners is to store their sensitive data in encrypted form. However, to take full advantage of cloud database as service, FHE enabled SQL processing is a promising solution, which will be elaborated in this chapter.
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