@arklabs/wallet-sdk/dist/esm/identity/inMemoryKey.js

Bitcoin wallet SDK with Taproot and Ark integration

import { pubSchnorr, randomPrivateKeyBytes } from "@scure/btc-signer/utils";
import { hex } from "@scure/base";
import { TreeSignerSession } from '../tree/signingSession.js';
const ZERO_32 = new Uint8Array(32).fill(0);
export class InMemoryKey {
    constructor(key) {
        this.key = key || randomPrivateKeyBytes();
    }
    static fromPrivateKey(privateKey) {
        return new InMemoryKey(privateKey);
    }
    static fromHex(privateKeyHex) {
        return new InMemoryKey(hex.decode(privateKeyHex));
    }
    async sign(tx, inputIndexes) {
        const txCpy = tx.clone();
        if (!inputIndexes) {
            if (!txCpy.sign(this.key, undefined, ZERO_32)) {
                throw new Error("Failed to sign transaction");
            }
            return txCpy;
        }
        for (const inputIndex of inputIndexes) {
            if (!txCpy.signIdx(this.key, inputIndex, undefined, ZERO_32)) {
                throw new Error(`Failed to sign input #${inputIndex}`);
            }
        }
        return txCpy;
    }
    xOnlyPublicKey() {
        return pubSchnorr(this.key);
    }
    signerSession() {
        return TreeSignerSession.random();
    }
}