@ledgerhq/coin-algorand/lib/logic/combine.js

Ledger Algorand Coin integration

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.combine = combine;
const algosdk_1 = require("algosdk");
const ED25519_SIGNATURE_LENGTH = 64;
/**
 * Combine an unsigned transaction with a signature
 * @param unsignedTx - The unsigned transaction as a hex string (msgpack encoded)
 * @param signature - The signature as a hex string
 * @returns The signed transaction as a hex string
 */
function combine(unsignedTx, signature) {
    const txBytes = Buffer.from(unsignedTx, "hex");
    const txn = (0, algosdk_1.decodeUnsignedTransaction)(txBytes);
    const sig = Buffer.from(signature, "hex").subarray(0, ED25519_SIGNATURE_LENGTH);
    const signedPayload = new algosdk_1.SignedTransaction({ sig, txn });
    const msgPackEncoded = (0, algosdk_1.encodeMsgpack)(signedPayload);
    return Buffer.from(msgPackEncoded).toString("hex");
}
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