Best of Two Worlds: Efficient, Usable and Auditable Biometric ABC on the Blockchain

ePrint Report: Best of Two Worlds: Efficient, Usable and Auditable Biometric ABC on the Blockchain

Neyire Deniz Sarier

In [1], two generic constructions for biometric-based non-transferable Attribute Based Credentials (biometric ABC) are presented, which offer different trade-offs between efficiency and trust assumptions. In this paper, we focus on the second scheme denoted as BioABC-ZK that tries to remove the strong (and unrealistic) trust assumption on the Reader R, and show that BioABC-ZK has a security flaw for a colluding R …

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