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ZKAttest: Ring and Group Signatures for Existing ECDSA Keys

URL: https://link.springer.com/chapter/10.1007/978-3-030-99277-4_4

Summary

Presents ZKAttest, a scheme for constructing ring and group signatures that work with existing ECDSA keys (e.g., hardware security keys). Uses ZK proofs to show membership in a set of public keys without revealing which key was used. Directly relevant to e-ID holder binding and privacy-preserving attestation use cases.

Used by

• ZKAttest

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