BDIMS: A Blockchain Based Digital Identity Management System with Zero Knowledge Proof

The world is rapidly heading towards digitization and digital documentation.The COVID-19 pandemic has highlighted the significance of digitization in our daily lives.Nowadays, fake documents are widely available and easy to obtain, harming both our financial system and social trust.Consequently, there is a growing demand for procedures to verify and authenticate various crucial documents, including transactional, financial, governmental, and personal certificates, as well as educational certificates.This type of practice can be done using blockchain and cryptography technology.In this paper, we propose a Blockchain based Digital Identity Management System (BDIMS) that empowers organizations to generate instantaneously authenticated and tamper-resistant digital credentials.It issues a signed document and stores the signature on the blockchain.The verifier can easily verify the signature from the blockchain instantly using the digital signature concept.BDIMS also provides a QR-code system for real-time identity verification.It also introduces zero-knowledge proof for verifying the part of an identity without revealing the original statement.Furthermore, a user can store and share all their identities on a single platform using BDIMS.The proposed model effectively addresses the shortcomings of traditional methods by ensuring a comprehensive and streamlined approach.It successfully bridges the gaps and overcomes the difficulties inherent in conventional document verification systems, meeting all the necessary criteria for a robust and reliable verification process.