zkDaily - 2026-05-14

零知识证明 zkDaily

ZKP Frontier Tracker 🎯

Thu

05.14

2026

Privacy-Preserving Aggregate-Signatures: Generic Constructions and Practical Instantiations

Paper

https://eprint.iacr.org/2026/836

Xiaoyang Wei BLS unforgeability

Wei et al. propose aggregate signatures with verifiable key aggregation (ASvKA) and privacy, a generic transformation from multi-signatures, and two instantiations: PP-SpeedyASvKA and PP-BAS.

Notes

First formal definition of ASvKA with privacy and verifiable key aggregation
Generic transformation from multi-signatures to aggregate signatures with stronger unforgeability
PP-SpeedyASvKA is pairing-free, two-round from SpeedyMuSig
PP-BAS from BLS offers trade-offs between unforgeability and privacy
Addresses lack of key aggregation and privacy in current aggregate signatures
Constant-size signatures and efficient verification

Collected by @icerdesign

零知识证明 zkDaily

Q&A Deep Dive 💬

Thu

05.14

2026

What is ASvKA?

ASvKA stands for aggregate signatures with verifiable key aggregation. It aggregates signatures, verifies aggregated public keys, and protects signer identities.

What are the features of PP-SpeedyASvKA?

PP-SpeedyASvKA is built from the pairing-free SpeedyMuSig scheme. It uses a two-round protocol and achieves strong unforgeability and signer privacy with efficient verification.

Why is the generic transformation important?

The transformation converts any multi-signature scheme into an aggregate signature system with privacy and verifiable key aggregation while strengthening unforgeability guarantees.

Prompted by @icerdesign