/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { Mac } from '../mac/internal/mac';
/**
 * Implementation of HMAC.
 *
 * @final
 */
export declare class Hmac extends Mac {
    private readonly hash;
    private readonly key;
    private readonly tagSize;
    /**
     * @param hash accepted names are SHA-1, SHA-256 and SHA-512
     * @param tagSize the size of the tag
     */
    constructor(hash: string, key: CryptoKey, tagSize: number);
    /**
     */
    computeMac(data: Uint8Array): Promise<Uint8Array>;
    /**
     */
    verifyMac(tag: Uint8Array, data: Uint8Array): Promise<boolean>;
}
/**
 * @param hash accepted names are SHA-1, SHA-256 and SHA-512
 * @param tagSize the size of the tag
 */
export declare function fromRawKey(hash: string, key: Uint8Array, tagSize: number): Promise<Mac>;