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An optimized dynamic attribute-based searchable encryption scheme.

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This summary is machine-generated.

This study introduces a novel attribute-based keyword searching (ABKS) scheme for cloud computing. It enhances data privacy and searchability without costly computations, improving efficiency and enabling policy updates.

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Area of Science:

  • Computer Science
  • Information Security
  • Cloud Computing

Background:

  • Cloud computing offers scalable resources but raises privacy and security concerns due to third-party data handling.
  • Traditional encryption methods limit data utility in the cloud.
  • Attribute-Based Encryption (ABE) and Searchable Encryption (SE) combined as Attribute-Based Keyword Searching (ABKS) offer a solution but often involve computationally expensive operations.

Purpose of the Study:

  • To propose an efficient and secure Attribute-Based Keyword Searching (ABKS) scheme for cloud environments.
  • To address the limitations of existing ABKS schemes, particularly their reliance on costly pairing operations and secret reconstruction mechanisms.
  • To enable dynamic updates of access control policies without re-encrypting data.

Main Methods:

  • Developed a novel ABKS scheme that avoids expensive bilinear pairing operations during search.
  • Eliminated the need for costly Lagrange interpolation for secret reconstruction.
  • Designed the scheme to support access control policy updates on ciphertexts.

Main Results:

  • The proposed scheme demonstrates enhanced efficiency by avoiding computationally intensive pairing operations.
  • Security is proven under the Decisional Bilinear Diffie-Hellmen (DBDH) assumption in the selective-set model.
  • Experimental evaluations confirm the scheme's communication and overall efficiency, along with its ability to update access policies.

Conclusions:

  • The proposed ABKS scheme provides a practical and efficient solution for secure data searching in cloud environments.
  • It effectively balances security requirements with computational efficiency, making cloud data more usable.
  • The ability to update access policies without re-encryption offers significant advantages for dynamic cloud data management.