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Multi-Party Revocation in Sovrin: Performance through Distributed Trust (Helminger, Kales, Ramacher, Walch 2020)

Last modified: 2026-10-27

DOI: 10.1007/978-3-030-75539-3_22 · URL: https://eprint.iacr.org/2020/724

Summary

Analyzes the pairing-based accumulator revocation used in Sovrin/Hyperledger Indy and shows that its witness updates are a performance bottleneck (CT-RSA 2021). Proposes to keep the accumulator trapdoor distributed among several parties via MPC, allowing much faster witness updates and private setup without a single trusted party. Relevant to e-ID revocation for large credential populations.

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