UMD build from paulmillr's libraries
- secp256k1 : https://github.com/paulmillr/noble-secp256k1
- keccak256 : https://github.com/paulmillr/noble-hashes
You can test it on Demo page
cd ./keccak-secp-umd
npm install
npm install webpack -g
npm install webpack-cli -g
webpack
npm install http-server -g
cd keccak-secp-umd
http-server<script src="./dist/noble.bundle.js"></script>
<script>
const hexToBytes = Noble.default.utils.hexToBytes;
const getPublicKey = Noble.default.secp.getPublicKey;
const keccak_256 = Noble.default.hash.keccak_256;
const utf8ToBytes = Noble.default.utils.utf8ToBytes;
const sign = Noble.default.secp.sign;
const bytesToHex = Noble.default.utils.bytesToHex;
const signatureFromHex = Noble.default.secp.Signature.fromHex;let hashed = Noble.default.hash.keccak_256(input)
let str = Noble.default.utils.bytesToHex(hashed);let privateKey = hexToBytes("00000000000000000000000000000000000000000000000000000000000000FF");
let publicKey = getPublicKey(privateKey);
let address = keccak_256(publicKey.slice(1)).slice(-20);let msg = utf8ToBytes("hello this is message");
let signature = await sign(msg, privateKey);
let sigHexStr = bytesToHex(signature);
let sig = signatureFromHex(sigHexStr);
let sig_r = sig.r;
let sig_s = sig.s;