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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.
112 lines
2.8 KiB
TeX
112 lines
2.8 KiB
TeX
\section{Blockchain Identity Integration}
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\subsection{Wallet Connection}
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Lux.id integrates with major wallet providers through standardized interfaces:
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\subsubsection{EIP-1193 Provider Interface}
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\begin{lstlisting}[language=Solidity]
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const accounts = await window.ethereum.request({
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method: 'eth_requestAccounts'
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});
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const signature = await window.ethereum.request({
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method: 'personal_sign',
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params: [message, accounts[0]]
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});
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\end{lstlisting}
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\subsubsection{Signature Verification}
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Wallet signatures are verified server-side:
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\begin{equation}
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\text{Address} = \text{ecrecover}(\text{hash}(\text{message}), v, r, s)
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\end{equation}
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Where $(v, r, s)$ are ECDSA signature components.
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\subsection{Decentralized Identifiers (DIDs)}
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Lux.id implements DID methods conforming to W3C specifications:
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\subsubsection{DID Document Structure}
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\begin{lstlisting}[language=json]
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{
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"@context": ["https://www.w3.org/ns/did/v1"],
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"id": "did:lux:1234567890abcdef",
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"verificationMethod": [{
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"id": "did:lux:1234567890abcdef#keys-1",
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"type": "EcdsaSecp256k1VerificationKey2019",
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"controller": "did:lux:1234567890abcdef",
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"publicKeyHex": "04f3c7d7..."
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}],
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"authentication": ["did:lux:1234567890abcdef#keys-1"],
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"service": [{
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"type": "IdentityHub",
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"serviceEndpoint": "https://id.lux.network/did/"
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}]
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}
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\end{lstlisting}
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\subsubsection{DID Resolution}
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DID resolution follows the universal resolver pattern:
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\begin{equation}
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\text{resolve}(\text{did:lux:xyz}) \rightarrow \text{DIDDocument}
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\end{equation}
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\subsection{On-chain Identity Verification}
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Lux.id verifies on-chain identity attributes:
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\begin{lstlisting}[language=Solidity]
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contract IdentityVerifier {
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mapping(address => bytes32) public identityHashes;
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function verifyIdentity(
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address user,
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bytes32 attributeHash,
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bytes memory signature
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) public view returns (bool) {
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bytes32 messageHash = keccak256(
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abi.encodePacked(user, attributeHash)
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);
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address signer = ECDSA.recover(messageHash, signature);
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return signer == user && identityHashes[user] == attributeHash;
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}
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}
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\end{lstlisting}
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\subsection{NFT-Based Access Control}
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Access control based on NFT ownership:
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\begin{lstlisting}[language=Solidity]
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function hasAccess(address user, uint256 tokenId) public view returns (bool) {
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return nftContract.ownerOf(tokenId) == user;
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}
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\end{lstlisting}
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\subsection{Soulbound Tokens for Reputation}
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Non-transferable tokens represent reputation:
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\begin{lstlisting}[language=Solidity]
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contract SoulboundToken is ERC721 {
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function _beforeTokenTransfer(
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address from,
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address to,
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uint256 tokenId
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) internal override {
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require(from == address(0), "Token is soulbound");
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super._beforeTokenTransfer(from, to, tokenId);
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}
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}
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\end{lstlisting}
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