Title: Improved Certificate Creation and Verification Architecture Using Hybrid Blockchain

Issue Number: Vol. 10, No. 4
Year of Publication: Dec - 2020
Page Numbers: 39-48
Authors: Muhammad Anwarul Azim, Md. Jawwad Bin Zahir
Journal Name: International Journal of New Computer Architectures and their Applications (IJNCAA)
- Hong Kong
DOI:  http://dx.doi.org/10.17781/P002680


Certificates containing proof of certain aspects of an entity are mostly given as printed papers by government institutes and their supporting organizations in some countries. The verification of these certificates is rather time-consuming. Also, a common platform to create and verify certificates securely and transparently is somehow missing. These allow offenders to forge certificates as well as tamper containing information. To address these problems of the certificate management system, a block chain based certificate management system is proposed in this paper. In addition to a database to reuse information about certificate owners, the system consists of two major modules. The creation module takes properly validated and authorized information and stores them into the blockchain along with its hash value to provide E-Certificates. Using hash values, the verification module verifies both paper certificates and E-Certificates. The system prevents attempts to create fake certificates or tamper with them. Hashing enhances the security of the system and, tamper resistant immutable records ensure transparency. By utilizing index servers, the system reduces operational cost and verification time as well as enables large scale use of the system.