89 lines
2.8 KiB
JavaScript
89 lines
2.8 KiB
JavaScript
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/**
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*
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* Pricecaster Testing Library.
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* (c) 2021-22 Randlabs, Inc.
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*
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*/
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const web3EthAbi = require('web3-eth-abi')
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const web3Utils = require('web3-utils')
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const elliptic = require('elliptic')
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class TestLib {
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/**
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* Create a packed and signed VAA for testing.
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* See https://github.com/certusone/wormhole/blob/dev.v2/design/0001_generic_message_passing.md
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*
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* @param {} guardianSetIndex The guardian set index
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* @param {*} signers The list of private keys for signing the VAA
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* @param {*} timestamp The timestamp of VAA
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* @param {*} nonce The nonce.
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* @param {*} emitterChainId The emitter chain identifier
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* @param {*} emitterAddress The emitter chain address, prefixed with 0x
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* @param {*} sequence The sequence.
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* @param {*} consistencyLevel The reported consistency level
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* @param {*} payload This VAA Payload hex string, prefixed with 0x
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*/
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createSignedVAA (guardianSetIndex,
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signers,
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timestamp,
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nonce,
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emitterChainId,
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emitterAddress,
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sequence,
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consistencyLevel,
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payload) {
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const body = [
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web3EthAbi.encodeParameter('uint32', timestamp).substring(2 + (64 - 8)),
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web3EthAbi.encodeParameter('uint32', nonce).substring(2 + (64 - 8)),
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web3EthAbi.encodeParameter('uint16', emitterChainId).substring(2 + (64 - 4)),
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web3EthAbi.encodeParameter('bytes32', emitterAddress).substring(2),
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web3EthAbi.encodeParameter('uint64', sequence).substring(2 + (64 - 16)),
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web3EthAbi.encodeParameter('uint8', consistencyLevel).substring(2 + (64 - 2)),
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payload.substr(2)
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]
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const hash = web3Utils.soliditySha3(web3Utils.soliditySha3('0x' + body.join('')))
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let signatures = ''
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for (const i in signers) {
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// eslint-disable-next-line new-cap
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const ec = new elliptic.ec('secp256k1')
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const key = ec.keyFromPrivate(signers[i])
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const signature = key.sign(hash.substr(2), { canonical: true })
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const packSig = [
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web3EthAbi.encodeParameter('uint8', i).substring(2 + (64 - 2)),
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this.zeroPadBytes(signature.r.toString(16), 32),
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this.zeroPadBytes(signature.s.toString(16), 32),
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web3EthAbi.encodeParameter('uint8', signature.recoveryParam).substr(2 + (64 - 2))
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]
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signatures += packSig.join('')
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}
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const vm = [
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web3EthAbi.encodeParameter('uint8', 1).substring(2 + (64 - 2)),
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web3EthAbi.encodeParameter('uint32', guardianSetIndex).substring(2 + (64 - 8)),
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web3EthAbi.encodeParameter('uint8', signers.length).substring(2 + (64 - 2)),
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signatures,
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body.join('')
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].join('')
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return vm
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}
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zeroPadBytes (value, length) {
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while (value.length < 2 * length) {
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value = '0' + value
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}
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return value
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}
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}
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module.exports = {
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TestLib
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}
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