otp-io/dist/bytes.mjs

🕖 Typed library to work 2fa via Google Authenticator/Time-based TOTP/Hmac-based HOTP

/**
 *
 *
 * @param {string} hex
 * @return {*}  {Uint8Array}
 */
function hexToBytes(hex) {
    const bytes = new Uint8Array(hex.length / 2);
    for (let index = 0; index < bytes.length; index++) {
        const string = hex.slice(index * 2, index * 2 + 2);
        bytes[+index] = Number.parseInt(string, 16);
    }
    return bytes;
}
/**
 *
 *
 * @param {number} number
 * @return {Uint8Array}  {Uint8Array}
 */
function getBigIntBytes(number) {
    if (typeof BigInt !== "undefined") {
        const message = new Uint8Array(8);
        const view = new DataView(message.buffer);
        view.setBigUint64(0, BigInt(number), false);
        return message;
    }
    const hex = number.toString(16).padStart(16, "0");
    return hexToBytes(hex);
}export{getBigIntBytes};