antelope-ecc/sign_packed_txn.js

A universal JavaScript ECC digital signature and key utility package for Antelope based blockchains.

import sha256 from "isomorphic-secp256k1-js/sha256.js";
import sign_tnx from "./sign.js";
/**
 * Generate an Antelope/EOSIO signature for a packed transaction object.
 */
export default async function sign_packed_txn({ chain_id, transaction_header, transaction_body, wif_private_key, extension = "0000000000000000000000000000000000000000000000000000000000000000", }) {
    const inputString = chain_id + transaction_header + transaction_body + extension;
    const hashArray = inputString.match(/[a-fA-F0-9]{2}/gmu);
    if (!hashArray)
        throw new Error("Invalid input string, could not generate hash.");
    return sign_tnx({
        hash: await sha256(Uint8Array.from(hashArray.map((i) => Number(`0x${i}`)))),
        wif_private_key,
    });
}