• Mr.N.Koteswara Rao
• K.Aj,ay Kumar

Phrase search encryption, as an important technique in cloud-based IoT system, allows users to retrieve encrypted IoT data that contains a set of consecutive keywords. It plays an important role in cloud-based e-healthcare diagnosis system, machine learning applications for cloud-based IoT system, etc. However, to the best of our knowledge, the existing phrase search encryption schemes cannot achieve the complete verification for search results. They either cannot verify whether the returned files correctly containing the query phrase or cannot verify whether all files containing this query phrase are returned. Result verification is very important for some cloud-based IoT applications. If the search result is incorrect in the cloud-based e- healthcare diagnosis system, it will lead to misdiagnosis even endanger the patient’s life. In order to deal with this problem, this paper explores how to achieve verifiable phrase search over encrypted cloud-based IoT data. Specifically, we design novel look- up tables which can be utilized to determine and verify the position relationship among keywords. Meanwhile, we adopt a two- phase query strategy. In the first query phase, the data user can know the identifiers of files containing the keywords in the query phrase, and generate the search trapdoor based on these identifiers for the next phase. In the second query phase, the data user can obtain the verification information to check whether all files containing the query phrase are correctly returned. We present the security analysis of our scheme and conduct extensive experiments. The results prove the high security and efficiency of our proposed scheme.

Phrase Search, IoT Data Management, Data Indexing, Secure Access Control, Data Accessibility, Search Mechanism.

"Towards Verifiable Phrase Search over Encrypted Cloud-Based IoT Data", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 6, page no.545-549, June-2024, Available :http://www.jetir.org/papers/JETIRGL06090.pdf

"Towards Verifiable Phrase Search over Encrypted Cloud-Based IoT Data", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 6, page no. pp545-549, June-2024, Available at : http://www.jetir.org/papers/JETIRGL06090.pdf