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<article article-type="Research Article">
  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher">journal-of-discrete-mathematical-sciences-and-cryptography</journal-id>
      <journal-title-group>
        <journal-title>Journal of Discrete Mathematical Sciences and Cryptography</journal-title>
      </journal-title-group>
      <issn publication-format="electronic">2169-0065</issn>
      <issn publication-format="print">0972-0529</issn>
      <publisher>
        <publisher-name>Taru Publications</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.47974/JDMSC-2505</article-id>
      <title-group>
        <article-title>Advancing homomorphic encryption techniques for ensuring privacy in cloud-based analytics</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Khidse</surname>
            <given-names>Swati V.</given-names>
          </name>
          <aff>Department of Computer Science and Engineering, CSMSS Chh. Shahu College of Engineering, Aurangabad, Maharashtra, 431002, India</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Sohi</surname>
            <given-names>Davinder Kaur</given-names>
          </name>
          <aff>Symbiosis Law School, Symbiosis Centre for Advanced Legal Studies and Research (SCALSAR), Symbiosis International (Deemed University), Pune, Maharashtra, 412115, India</aff>
        </contrib>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Bibhu</surname>
            <given-names>Vimal</given-names>
          </name>
          <aff>Department of School of Engineering &amp; Technology, Noida International University, Noida, Uttar Pradesh, 203201, India</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Nandgaonkar</surname>
            <given-names>Vikas</given-names>
          </name>
          <aff>Department of Computer Engineering, Indira College of Engineering and Management, Pune, Maharashtra, 410506, India</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Singla</surname>
            <given-names>Atul</given-names>
          </name>
          <aff>School of Architecture and Design, Lovely Professional University, Phagwara, Punjab, 144411, India</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Swarnkar</surname>
            <given-names>Suman Kumar</given-names>
          </name>
          <aff>Department of Computer Science and Engineering, Shri Shankaracharya Institute of Professional Management and Technology, Raipur, Chhattisgarh, 492015, India</aff>
        </contrib>
      </contrib-group>
      <volume>29</volume>
      <issue>2-A</issue>
      <fpage>629</fpage>
      <lpage>636</lpage>
      <pub-date date-type="pub">
        <day>04</day>
        <month>02</month>
        <year>2026</year>
      </pub-date>
      <abstract>
        <p>Vulnerabilities in modern cloud analytics have become more pronounced with the rapid adoption of cloud-based analytics in high impact and sensitive domains like healthcare, finance and IoT; the demand for privacy preserving means that scale to these large-scale problems has intensified. However, existing traditional encryption schemes do not allow processing calculation on encrypted data, enabling the use of Homomorphic Encryption (HE) in analytics workflow. In this paper we propose Hybrid Homomorphic Encryption with Differential Privacy Calibration (HHE-DPC), a novel hybrid approach, that fuses the computational flexibility of leveled HE with the statistical guarantees of differential privacy. The proposed framework provides end-to-end confidentiality with respect to data processing over cloud systems and keeps analytical utility. The effectiveness of HHE DPC is validated with existing privacy preserving methods in terms of accuracy, communication overhead, computational cost, throughput, and convergence. Experimental results show that HHE-DPC exhibits better performance: the accuracy is improved by up to 5.4% and computation overhead is reduced up to 30% compared with competition schemes, including state of the art PPFL-LQDP.</p>
      </abstract>
      <kwd-group>
        <kwd>Homomorphic encryption</kwd>
        <kwd>Cloud-based analytics</kwd>
        <kwd>Privacy preservation</kwd>
        <kwd>Differential privacy</kwd>
        <kwd>Secure computation</kwd>
      </kwd-group>
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          <meta-value>open</meta-value>
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  </front>
</article>
