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June 8-10, 2021
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Tuesday, June 8 • 10:25 - 10:40
Privacy Enabled Immunity Credential System on Blockchain - Harika Narumanchi, Tata Consultancy Services

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Immunity credentials facilitate vaccinated individuals to authenticate their immunity while returning to work or travel, etc. Privacy enabled credentials that do not rely on centralized parties are essential to secure users’ sensitive data. We present a decentralized system that provides verifiable credentials to prove immunity in a privacy preserving manner. Our system provides strong cryptographic guarantees for privacy and verifiability. We leverage a special cryptographic primitive, Content Extraction Signature (BLS Signatures), that enables selective disclosure of immunity claims in a verifiable manner. Immutable record of claims on Blockchain ensures authenticity of claims during the credential verification process. Our solution enables users to reuse the tamper-proof verification status recorded on blockchain ledger without recurrent proof generation and verification process.

avatar for Harika Narumanchi

Harika Narumanchi

Researcher, Tata Consultancy Services
Harika Narumanchi is a researcher in the cybersecurity and privacy research area at TCS Research and Innovation. Her research broadly focuses on leveraging applied cryptography, blockchain and machine learning solutions to business-oriented scenarios. Prior to joining TCS, she has... Read More →

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Tuesday June 8, 2021 10:25 - 10:40 CEST
Virtual 5
  Demo Theater