Verifiable Computation over Large Database with Incremental Updates

  • Xiaofeng Chen
  • Jin Li
  • Jian Weng
  • Jianfeng Ma
  • Wenjing Lou
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8712)


The notion of verifiable database (VDB) enables a resource-constrained client to securely outsource a very large database to an untrusted server so that it could later retrieve a database record and update a record by assigning a new value. Also, any attempt by the server to tamper with the data will be detected by the client. When the database undergoes frequent while small modifications, the client must re-compute and update the encrypted version (ciphertext) on the server at all times. For very large data, it is extremely expensive for the resources-constrained client to perform both operations from scratch. In this paper, we formalize the notion of verifiable database with incremental updates (Inc-VDB). Besides, we propose a general Inc-VDB framework by incorporating the primitive of vector commitment and the encrypt-then-incremental MAC mode of encryption. We also present a concrete Inc-VDB scheme based on the computational Diffie-Hellman (CDH) assumption. Furthermore, we prove that our construction can achieve the desired security properties.


Verifiable Database Incremental Cryptography Outsourcing Computations Vector Commitment 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Xiaofeng Chen
    • 1
    • 4
  • Jin Li
    • 2
    • 4
  • Jian Weng
    • 3
  • Jianfeng Ma
    • 1
  • Wenjing Lou
    • 4
  1. 1.State Key Laboratory of Integrated Service Networks (ISN)Xidian UniversityXi’anP.R. China
  2. 2.School of Computer Science and Educational SoftwareGuangzhou UniversityGuangzhouP.R. China
  3. 3.Department of Computer ScienceJinan UniversityGuangzhouP.R. China
  4. 4.Department of Computer ScienceVirginia Polytechnic Institute and State UniversityUSA

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