mirror of
https://github.com/semaphore-protocol/semaphore.git
synced 2026-04-28 03:00:41 -04:00
80 lines
2.3 KiB
TypeScript
80 lines
2.3 KiB
TypeScript
import { exec as _exec } from "child_process"
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import download from "download"
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import fs from "fs"
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import logger from "js-logger"
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import rimraf from "rimraf"
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import { zKey } from "snarkjs"
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import { promisify } from "util"
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import { config } from "../package.json"
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logger.useDefaults()
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async function exec(command: string) {
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const { stderr, stdout } = await promisify(_exec)(command)
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if (stderr) {
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throw new Error(stderr)
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}
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logger.info(stdout)
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}
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async function main() {
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const buildPath = config.paths.build.snark
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const templatesPath = config.paths["snarkjs-templates"]
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const solidityVersion = config.solidity.version
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if (!fs.existsSync(buildPath)) {
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fs.mkdirSync(buildPath, { recursive: true })
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}
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if (!fs.existsSync(`${buildPath}/powersOfTau28_hez_final_14.ptau`)) {
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const url = "https://hermez.s3-eu-west-1.amazonaws.com/powersOfTau28_hez_final_14.ptau"
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await download(url, buildPath)
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}
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await exec(`circom ./circuits/semaphore.circom --r1cs --wasm -o ${buildPath}`)
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await zKey.newZKey(
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`${buildPath}/semaphore.r1cs`,
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`${buildPath}/powersOfTau28_hez_final_14.ptau`,
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`${buildPath}/semaphore_0000.zkey`,
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logger
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)
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await zKey.beacon(
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`${buildPath}/semaphore_0000.zkey`,
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`${buildPath}/semaphore_final.zkey`,
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"Final Beacon",
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"0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f",
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10,
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logger
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)
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let verifierCode = await zKey.exportSolidityVerifier(
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`${buildPath}/semaphore_final.zkey`,
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{ groth16: fs.readFileSync(`${templatesPath}/verifier_groth16.sol.ejs`, "utf8") },
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logger
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)
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verifierCode = verifierCode.replace(/pragma solidity \^\d+\.\d+\.\d+/, `pragma solidity ^${solidityVersion}`)
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fs.writeFileSync(`${config.paths.contracts}/base/Verifier.sol`, verifierCode, "utf-8")
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const verificationKey = await zKey.exportVerificationKey(`${buildPath}/semaphore_final.zkey`, logger)
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fs.writeFileSync(`${buildPath}/verification_key.json`, JSON.stringify(verificationKey), "utf-8")
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fs.renameSync(`${buildPath}/semaphore_js/semaphore.wasm`, `${buildPath}/semaphore.wasm`)
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rimraf.sync(`${buildPath}/semaphore_js`)
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rimraf.sync(`${buildPath}/powersOfTau28_hez_final_14.ptau`)
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rimraf.sync(`${buildPath}/semaphore_0000.zkey`)
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rimraf.sync(`${buildPath}/semaphore.r1cs`)
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}
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main()
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.then(() => process.exit(0))
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.catch((error) => {
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console.error(error)
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process.exit(1)
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})
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