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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.
33 lines
1.7 KiB
TeX
33 lines
1.7 KiB
TeX
\section{Introduction}
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\label{sec:introduction}
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Blockchain transparency is simultaneously its greatest feature and its most
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significant limitation. Every transaction amount, every account balance, every
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smart contract state variable is publicly visible. This transparency enables
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trustless verification but prohibits use cases that require confidentiality:
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\begin{itemize}[leftmargin=2em]
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\item \textbf{Dark pools}: Institutional trading requires hidden orderbooks. On
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transparent chains, every pending order is visible, enabling front-running.
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\item \textbf{Private voting}: On-chain governance with visible votes before
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tallying enables vote-buying and last-minute strategic voting.
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\item \textbf{Sealed-bid auctions}: Auction mechanisms (Vickrey, Dutch) require
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bid secrecy until the reveal phase. Transparent chains leak bids.
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\item \textbf{Regulatory compliance}: Regulation ATS (Alternative Trading Systems)
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requires that certain trading data remain confidential from non-participants.
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\end{itemize}
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Fully homomorphic encryption (FHE) resolves this tension by enabling computation on
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encrypted data. A smart contract operating on FHE ciphertexts can add encrypted
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balances, compare encrypted values, and update encrypted state---all without
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decrypting. Only authorized parties (key holders) can decrypt the final results.
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This paper describes the Lux FHE implementation: a native Go cryptographic backend
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with NTT SIMD acceleration, integrated as an EVM precompile and deployed on the
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LiquidFHE chain.
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%% ========================================================================
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%% 2. FHE PRIMER
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%% ========================================================================
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