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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.
38 lines
1.3 KiB
TeX
38 lines
1.3 KiB
TeX
\section{Trusted Execution Environments (TEE)}
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\subsection{Tier 3 Privacy Model}
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For regulated use cases, Z-Chain supports \textbf{TEE-based privacy}:
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\begin{itemize}[leftmargin=1.1em]
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\item Validators run Intel SGX or AMD SEV enclaves
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\item Smart contracts execute inside secure enclave
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\item Auditors receive encrypted attestations from TEE
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\item Regulators access transaction data via auditor keys
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\end{itemize}
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\subsection{Attestation Protocol}
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\begin{algorithm}[H]
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\caption{TEE Transaction Attestation}
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\begin{algorithmic}[1]
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\State \textbf{Input:} Transaction $T$, auditor public key $pk_{\text{aud}}$
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\State \textbf{Output:} Encrypted attestation $E$, TEE quote $Q$
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\State
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\State // Execute transaction in enclave
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\State $\text{result} \leftarrow \text{ExecuteInEnclave}(T)$
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\State
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\State // Generate attestation
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\State $A \leftarrow \{\text{sender}, \text{recipient}, \text{amount}, \text{timestamp}\}$
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\State $E \leftarrow \text{Encrypt}(A, pk_{\text{aud}})$ \Comment{Auditor can decrypt}
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\State
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\State // Remote attestation quote
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\State $Q \leftarrow \text{GenerateQuote}(\text{enclave\_measurement})$
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\State \textbf{return} $(E, Q)$
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\end{algorithmic}
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\end{algorithm}
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\textbf{Compliance Guarantee}: Regulators verify TEE quote $Q$ proves correct enclave execution, then decrypt $E$ to audit transaction.
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