Introduction

import {Sdk} from "@owneraio/finp2p-sdk-js";
import * as secp256k1 from 'secp256k1'; // this sample is using version "^3.7.1"
import * as crypto from 'crypto';


const sdk = new Sdk({ orgId: "ownera", owneraAPIAddress: "https://example.com/", owneraRASAddress: "" });

export const sign = (privKey: Buffer, hash: Buffer) => {
    const sigObj = secp256k1.sign(hash, privKey);
    return sigObj.signature.toString('hex');
}

const {private: privateKey, public: publicKey} = createCrypto();
export const signingMethod = (privateKey: Buffer) => (hash: string) => Promise.resolve(sign(privateKey, Buffer.from(hash, 'hex')));

(async function() {
    try {
        const user = await sdk.createUser({ withSignatureProvider: {
                publicKey: publicKey.toString('hex'),
                signingMethod: signingMethod(privateKey),
            }});
        const userData = await user.getData();
        console.log(userData);
    }catch (e) {
        console.error(e);
    }


})();

function createCrypto() {
    // generate private key
    let privKey;
    do {
        privKey = crypto.randomBytes(32);
    } while (!secp256k1.privateKeyVerify(privKey))

    // get the public key in a compressed format
    const pubKey = secp256k1.publicKeyCreate(privKey, true);
    return {private: privKey, public: pubKey};
};