/**
 * @license
 * @preserve
 *
 * KeeeX SAS Public code
 * https://keeex.me
 * Copyright 2013-2023 KeeeX All Rights Reserved.
 * 
 * These computer program listings and specifications, herein,
 * are and remain the property of KeeeX SAS. The intellectual
 * and technical concepts herein are proprietary to KeeeX SAS
 * and may be covered by EU and foreign patents,
 * patents in process, trade secrets and copyright law.
 * 
 * These listings are published as a way to provide third party
 * with the ability to process KeeeX data.
 * As such, support for public inquiries is limited.
 * They are provided "as-is", without warrany of any kind.
 * 
 * They shall not be reproduced or copied or used in whole or
 * in part as the basis for manufacture or sale of items unless
 * prior written permission is obtained from KeeeX SAS.
 * 
 * For a license agreement, please contact:
 * <mailto: contact@keeex.net>
 * 
 */
import { type Hmac } from "../hmactypes.js";
import type * as digestTypes from "../digesttypes.js";
/**
 * Fallback implementation of a HMAC that support chunked input.
 *
 * Handle computation using digest module.
 *
 * @internal
 */
export default class ChunkHmac implements Hmac {
    #private;
    constructor(algorithm: digestTypes.Algorithms, key: Uint8Array);
    /** Return an appropriate length key for HMAC */
    static readonly padKey: (algorithm: digestTypes.Algorithms, key: Uint8Array) => Promise<Uint8Array>;
    /** XOR a byte buffer with the given byte */
    static readonly xorBuffer: (input: Uint8Array, byteKey: number) => Uint8Array;
    update: (data: Uint8Array) => Promise<void>;
    hmac: (data?: Uint8Array) => Promise<Uint8Array>;
}