3 papers
cs.CR2026
The Native-Signature Boundary in Post-Quantum Distributed Authorization
Dariia Porechna
Post-quantum signature migration poses a distinct systems problem when authorization is distributed among multiple parties. In native threshold signing, the signature algorithm may…
cs.CR2026
Threshold Authorization Without Threshold Signatures: Signature-Agnostic MPC Custody
Dariia Porechna
Digital-asset custody has been built on threshold multi-party approval: no operation proceeds unless of parties approve, and fewer than t compromised parties can neither au…
cs.CR2026
SILMARILS: Information-Theoretic and Quantum-Secure Designated-Verifier Signatures
Hassan Khodaiemehr, Khadijeh Bagheri, Chen Feng +1
SILMARILS is built from a minimal algebraic core over using true randomness and perfect -out-of- Shamir secret sharing. The framework supports both two-party a…