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New Keyed-Verification Anonymous Credential Systems Introduced

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🔑✨ New Efficient Keyed-Verification Anonymous Credential Systems Proposed. Researchers have introduced two innovative constructions for keyed-verification anonymous credential (KVAC) systems that enhance efficiency by eliminating the need for computationally intensive zero-knowledge proofs during credential presentations. The first construction adapts existing techniques to achieve constant-size presentations, utilizing structure-preserving signatures and designated-verifier set commitments. The second construction simplifies the process by employing a homomorphic message authentication code, resulting in constant-size presentations but slightly larger credentials. Both systems have been rigorously proven secure and demonstrate significant performance improvements in practical implementations, marking a notable advancement in privacy-preserving credential verification.

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