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helpers.ts
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helpers.ts
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import { ethers } from "ethers"
import { checkSignature, convertSignatureForSolidity, hashBWithMonad, keysToKeyHashes, KeyTracker, Monad, signHashWithMonadAndCurry } from "./index"
import KeyTrackerA from "./KeyTrackerA"
import KeyTrackerB from "./KeyTrackerB"
import KeyTrackerC from "./KeyTrackerC"
import { KeyPair } from "./types"
// import kyber from 'crystals-kyber'
// import * as crypto from 'crypto'
type PubPri = {
pub: any,
pri: any
}
// class Kyber {
// static newKeyPair(): PubPri {
// const a = kyber.KeyGen1024()
// const pub: Uint8Array = a[0]
// const pri: Uint8Array = a[1]
// const pubHex = Buffer.from(pub).toString('hex')
// const priHex = Buffer.from(pri).toString('hex')
// return {
// pub: pubHex,
// pri: priHex
// }
// }
// }
/**
* @name getSelector
* @description Gets the selector for a function in a contract
* @date Febuary 14th 2023
* @author William Doyle
*/
const getSelector = (contract: any, functionName: string) => {
const iface = contract.interface
const fragment = iface.getFunction(functionName)
return iface.getSighash(fragment)
}
/**
* @name isValidPublicKey
* @description Checks if a public key is valid
* @date Febuary 16th 2023
* @author William Doyle
*/
const isValidPublicKey = async (signingKeys: KeyPair, contract: any) => {
const publicKeyHash = KeyTracker.pkhFromPublicKey(signingKeys.pub)
const isRedeemable = await contract.isRedeemable(publicKeyHash)
// console.log(`Is redeemable: ${isRedeemable} | ${publicKeyHash}`)
return isRedeemable
}
/**
* @name checkValidPublicKey
* @description Checks if a public key is valid
* @date Febuary 16th 2023
* @author William Doyle
*/
const checkValidPublicKey = async (signingKeys: KeyPair, contract: any) => {
const isValid = await isValidPublicKey(signingKeys, contract)
if (!isValid)
throw new Error('Invalid signing key')
}
/**
* @name addNKeys
* @description Adds n keys to the lamport wallet contract
* @author William Doyle
* @date Febuary 8th 2023
*/
const addNKeys = async (n: number, walletContract: any, keys: KeyTrackerA | KeyTrackerB | KeyTrackerC) => {
const signingKeys = keys.getOne()
await checkValidPublicKey(signingKeys, walletContract)
const keyPairsToAdd: KeyPair[] = keys.more(n)
const publicKeyHashes = keyPairsToAdd.map(kp => KeyTracker.pkhFromPublicKey(kp.pub))
const selector = getSelector(walletContract, 'addPublicKeyHashes')
const prep = (publicKeyHashes: string[]) => new Monad(ethers.utils.solidityPack(['bytes32[]', 'bytes4'], [publicKeyHashes, selector]))
const hashToSign = new Monad(keyPairsToAdd)
.bind(keysToKeyHashes)
.bind(prep)
.bind(hashBWithMonad)
const signature = hashToSign
.bind(signHashWithMonadAndCurry(signingKeys.pri))
.bind(checkSignature(signingKeys.pub)(hashToSign.unwrap()))
.bind(convertSignatureForSolidity)
const gasLimit = await walletContract.estimateGas.addPublicKeyHashes(publicKeyHashes, signingKeys.pub, signature.unwrap())
const gasPrice = await walletContract.provider.getGasPrice()
return await walletContract.addPublicKeyHashes(publicKeyHashes, signingKeys.pub, signature.unwrap(), {
gasLimit: gasLimit,
gasPrice: gasPrice
})
}
/**
* @name setDetail
* @description set a detail on the contract
* @author William Doyle
* @date Febuary 14th 2023
* @note value must be formated as hex data
*/
const setDetail = async (contract: any, keys: KeyTrackerA | KeyTrackerB | KeyTrackerC, typehash: string, value: string) => {
const selector = getSelector(contract, 'setDetail')
const hashToSign = new Monad(ethers.utils.solidityPack(['bytes32', 'bytes', 'bytes4'], [typehash, value, selector]))
.bind(hashBWithMonad)
const signingKeys = keys.getOne()
await checkValidPublicKey(signingKeys, contract)
const signature = hashToSign
.bind(signHashWithMonadAndCurry(signingKeys.pri))
.bind(checkSignature(signingKeys.pub)(hashToSign.unwrap()))
.bind(convertSignatureForSolidity)
return await contract.setDetail(typehash, value, signingKeys.pub, signature.unwrap())
}
/**
* @name endorseMessage
* @description commit to an arbitrary human readable message
* @author William Doyle
* @date Febuary 13th 2023
*/
const endorseMessage = async (_message: string, contract: any, liveKeys: KeyTrackerA | KeyTrackerB | KeyTrackerC) => {
const signingKeys = liveKeys.getOne()
await checkValidPublicKey(signingKeys, contract)
const message = ethers.utils.keccak256(ethers.utils.solidityPack(['string'], [_message]))
const selector = getSelector(contract, 'endorseMessage')
const hashToSign = new Monad(ethers.utils.keccak256(ethers.utils.solidityPack(['bytes32', 'bytes4'], [message, selector])))
const signature = hashToSign
.bind(signHashWithMonadAndCurry(signingKeys.pri))
.bind(checkSignature(signingKeys.pub)(hashToSign.unwrap()))
.bind(convertSignatureForSolidity)
return await contract.endorseMessage(message, signingKeys.pub, signature.unwrap())
}
/**
* @name endorsePublicKeyHash
* @description commit to a public key hash from another cryptosystem
* @author William Doyle
* @date Febuary 13th 2023
*/
const endorsePublicKeyHash = async (typehash: string, index: string, keyhash: string, contract: any, keys: KeyTrackerA | KeyTrackerB | KeyTrackerC) => {
const selector = getSelector(contract, 'endorsePKH')
const hashToSign = new Monad(ethers.utils.solidityPack(['bytes32', 'uint256', 'bytes32', 'bytes4'], [typehash, index, keyhash, selector]))
.bind(hashBWithMonad)
const signingKeys = keys.getOne()
await checkValidPublicKey(signingKeys, contract)
const signature = hashToSign
.bind(signHashWithMonadAndCurry(signingKeys.pri))
.bind(checkSignature(signingKeys.pub)(hashToSign.unwrap()))
.bind(convertSignatureForSolidity)
return await contract.endorsePKH(typehash, index, keyhash, signingKeys.pub, signature.unwrap())
}
/**
* @name sendEtherFromContract
* @description Sends ether from the lamport wallet contract
* @author William Doyle
* @date Febuary 8th 2023
*/
const sendEtherFromContract = async (walletContract: any, keys: KeyTrackerA | KeyTrackerB | KeyTrackerC, to: string, amount: string) => {
const signingKeys = keys.getOne()
await checkValidPublicKey(signingKeys, walletContract)
const selector = getSelector(walletContract, 'sendEther')
const hashToSign = new Monad(ethers.utils.solidityPack(['address', 'uint256', 'bytes4'], [to, amount, selector]))
.bind(hashBWithMonad)
const signature = hashToSign
.bind(signHashWithMonadAndCurry(signingKeys.pri))
.bind(checkSignature(signingKeys.pub)(hashToSign.unwrap()))
.bind(convertSignatureForSolidity)
return await walletContract.sendEther(to, amount, signingKeys.pub, signature.unwrap())
}
export {
addNKeys,
setDetail,
endorseMessage,
endorsePublicKeyHash,
getSelector,
// Kyber,
PubPri,
sendEtherFromContract,
}