28 lines
1.2 KiB
JavaScript
28 lines
1.2 KiB
JavaScript
import("../pkg/index.js").catch(console.error);
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async function main() {
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const pkg = await import("../pkg/index.js")
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console.log('Downloading previous contribution from /params.bin')
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const params = await fetch('params.bin')
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params = new Uint8Array(await params.arrayBuffer())
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const userInput = prompt('Please enter some random symbols')
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if (!userInput.length) {
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throw new Error('Zero symbols entered')
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}
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const msgBuffer = new TextEncoder('utf-8').encode(userInput)
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const hashBuffer = await window.crypto.subtle.digest('SHA-256', msgBuffer)
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const entropyFromUser = new Uint8Array(hashBuffer)
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const entropyFromBrowser = window.crypto.getRandomValues(new Uint8Array(32))
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const entropy = new Uint8Array(entropyFromBrowser.length)
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for (let i = 0; i < entropyFromBrowser.length; i++) {
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entropy[i] = entropyFromBrowser[i] ^ entropyFromUser[i]
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}
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console.log('Contributing with entropy', entropy) // shouldn't be logged on prod
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const result = pkg.contribute(params, entropy)
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console.log('Your contribution', result)
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console.log('Contribution raw data:', '0x' + Buffer.from(result).toString('hex'))
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}
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main() |