Vega: Low-Latency Zero-Knowledge Proofs over Existing Credentials

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As digital identity verification becomes increasingly pervasive, existing privacy-preserving approaches are still limited by complex circuit designs, large proof sizes, trusted setups, or high latency. We present Vega, a practical zero-knowledge proof system that proves statements about existing credentials without revealing anything else. Vega is simple, does not require a trusted setup, and is more efficient than the prior state-of-the-art: for a 1920-byte credential, Vega achieves 92 ms provi