mirror of
https://github.com/lux-apps/papers.git
synced 2026-10-30 18:15:21 +00:00
zeekay
abf99d05fc
Restructured from flat .tex/.pdf files into per-paper subdirectories. Added Antje Worring as co-author on all papers. Synced PDFs to pdfs/ for download site.
80 lines
3.7 KiB
TeX
80 lines
3.7 KiB
TeX
\section{Conclusion}
|
|
\label{sec:conclusion}
|
|
|
|
Threshold cryptography has been ready for consumer deployment for years.
|
|
What has been missing is the product design that makes it invisible.
|
|
Threshold UX closes this gap by mapping threshold primitives to product
|
|
patterns that users already understand: approval flows, recovery contacts,
|
|
shared workspaces, spending limits, and compliance gates.
|
|
|
|
The key contributions of this paper are:
|
|
|
|
\begin{enumerate}
|
|
\item \textbf{Threshold as UX primitive.} A formal mapping from
|
|
threshold cryptographic operations (FROST signatures, Shamir sharing,
|
|
threshold decryption, TFHE policy evaluation) to product interaction
|
|
patterns (approvals, recovery, workspaces, treasury, compliance).
|
|
|
|
\item \textbf{Social recovery without seed phrases.} A guardian-based
|
|
recovery protocol that replaces 24-word mnemonics with ``3 of 5 trusted
|
|
contacts,'' including guardian rotation via proactive secret sharing.
|
|
|
|
\item \textbf{Progressive security.} A tiered security model that
|
|
starts at 1-of-1 and upgrades to threshold control as value increases,
|
|
with downgrade resistance preventing unilateral weakening.
|
|
|
|
\item \textbf{UX interaction patterns.} Concrete design patterns
|
|
(notification-driven approval, progress indicators, delegation,
|
|
timeout escalation) that hide cryptographic ceremony behind familiar
|
|
product metaphors.
|
|
|
|
\item \textbf{Security equivalence proof.} A demonstration that the
|
|
UX layer preserves the security guarantees of the underlying threshold
|
|
primitives, introducing no additional attack surface beyond social
|
|
engineering, which is bounded by guardian diversity.
|
|
\end{enumerate}
|
|
|
|
Threshold cryptography is not hard to use. It has been hard to present.
|
|
That problem is now solved.
|
|
|
|
\begin{thebibliography}{99}
|
|
|
|
\bibitem{shamir1979share}
|
|
A.~Shamir, ``How to share a secret,'' \emph{Communications of the ACM}, vol.~22, no.~11, pp.~612--613, 1979.
|
|
|
|
\bibitem{gennaro2018fast}
|
|
R.~Gennaro and S.~Goldfeder, ``Fast multiparty threshold ECDSA with fast trustless setup,'' in \emph{ACM CCS}, 2018.
|
|
|
|
\bibitem{komlo2020frost}
|
|
C.~Komlo and I.~Goldberg, ``FROST: Flexible round-optimized Schnorr threshold signatures,'' in \emph{SAC}, Springer, 2020.
|
|
|
|
\bibitem{canetti2021cggmp}
|
|
R.~Canetti, R.~Gennaro, S.~Goldfeder, N.~Makriyannis, and U.~Peled, ``UC non-interactive, proactive, threshold ECDSA with identifiable aborts,'' in \emph{ACM CCS}, 2020.
|
|
|
|
\bibitem{gentry2009fhe}
|
|
C.~Gentry, ``Fully homomorphic encryption using ideal lattices,'' in \emph{STOC}, ACM, 2009.
|
|
|
|
\bibitem{chillotti2020tfhe}
|
|
I.~Chillotti, N.~Gama, M.~Georgieva, and M.~Izabach\`ene, ``TFHE: Fast fully homomorphic encryption over the torus,'' \emph{Journal of Cryptology}, vol.~33, pp.~34--91, 2020.
|
|
|
|
\bibitem{herzberg1995proactive}
|
|
A.~Herzberg, S.~Jarecki, H.~Krawczyk, and M.~Yung, ``Proactive secret sharing or: How to cope with perpetual leakage,'' in \emph{CRYPTO}, Springer, 1995.
|
|
|
|
\bibitem{shapiro2011crdt}
|
|
M.~Shapiro, N.~Pregui\c{c}a, C.~Baquero, and M.~Zawirski, ``Conflict-free replicated data types,'' in \emph{SSS}, Springer, 2011.
|
|
|
|
\bibitem{blaze1998divertible}
|
|
M.~Blaze, G.~Bleumer, and M.~Strauss, ``Divertible protocols and atomic proxy cryptography,'' in \emph{EUROCRYPT}, Springer, 1998.
|
|
|
|
\bibitem{bonneau2012quest}
|
|
J.~Bonneau, C.~Herley, P.~C.~van~Oorschot, and F.~Stajano, ``The quest to replace passwords,'' in \emph{IEEE S\&P}, 2012.
|
|
|
|
\bibitem{eskandari2018first}
|
|
S.~Eskandari, D.~Barrera, E.~Stobert, and J.~Clark, ``A first look at the usability of Bitcoin key management,'' in \emph{NDSS Workshop on Usable Security}, 2018.
|
|
|
|
\bibitem{shoup2000practical}
|
|
V.~Shoup, ``Practical threshold signatures,'' in \emph{EUROCRYPT}, Springer, 2000.
|
|
|
|
\end{thebibliography}
|
|
|