25 lines
786 B
JavaScript
25 lines
786 B
JavaScript
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const { recoverPersonalSignature } = require('@metamask/eth-sig-util');
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const verifySignature = ({
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authors, content, signature, embeddedData,
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}) => {
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let contentToVerify = content;
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if (embeddedData && Object.entries(embeddedData).length) {
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contentToVerify += `\n\nDATA\n${JSON.stringify(embeddedData, null, 2)}`;
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}
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try {
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const account = recoverPersonalSignature({ data: contentToVerify, signature });
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const authorAddresses = authors.map((author) => author.authorAddress);
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if (!authorAddresses.includes(account)) {
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console.log('error: signer is not among the authors');
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return false;
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}
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} catch (e) {
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console.log('error: failed to recover signature:', e.message);
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return false;
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}
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return true;
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};
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module.exports = verifySignature;
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