Privacy-Preserving Educational Credentials Sharing Based on Blockchain and Proxy Re-Encryption

Dongkun Hou*, Jieming Ma, Zitian Peng, Jie Zhang, Xiaohui Zhu

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review


The educational credential is an important reference for enterprises to screen students. However, the educational credentials are normally stored in a centralized cloud server with improper maintenance and inadequate supervision, and students’ credentials are easily tampered with by server administrators. In addition, students’ credentials are also sensitive information and therefore need to be encrypted and stored in the cloud server, but traditional encryption schemes face challenges because of private key sharing. The paper designs a privacy-preserving educational credentials sharing scheme based on blockchain and proxy re-encryption. The proposed approach addresses the problems of centralized storage and encryption sharing. Students’ sensitive information is encrypted and stored in a cloud server, and the hash index is stored in a blockchain. Enterprise is able to match students’ public information and request private credentials by proxy re-encryption. We also realize the prototype of the system and evaluate the performance of the encryption scheme.

Original languageEnglish
Title of host publicationComputer Science and Education - 17th International Conference, ICCSE 2022, Revised Selected Papers
EditorsWenxing Hong, Yang Weng
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages12
ISBN (Print)9789819924424
Publication statusPublished - 2023
Event17th International Conference on Computer Science and Education, ICCSE 2022 - Ningbo, China
Duration: 18 Aug 202221 Aug 2022

Publication series

NameCommunications in Computer and Information Science
Volume1811 CCIS
ISSN (Print)1865-0929
ISSN (Electronic)1865-0937


Conference17th International Conference on Computer Science and Education, ICCSE 2022


  • Blockchain
  • Data Sharing
  • Educational Credential
  • Privacy Preservation
  • Proxy Re-Encryption


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