/**
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { BundleEntry } from './BundleEntry';
/**
 * SignedFiles class creates a manifest file and a signature file according the the jar
 * specifications. Generating this class allows the manifest and signature files to be tightly
 * coupled reducing the amount of differences between the two files.
 */
export declare class SignedFiles {
    private bundleEntries;
    private readonly manifestVersionHeader;
    private readonly signatureVersionHeader;
    private readonly createdByHeader;
    /**
     * This generates a signed files class to hold all of the signed files info required for creating
     * a manifest and signature file.
     *
     * @param creator - The entity creating the files.
     * @param bundleEntries - An array of entries info from the zip file (a file location and a md5
     *  hash of the contents).
     */
    constructor(creator: string, bundleEntries?: BundleEntry[]);
    /**
     *
     * @returns The manifest file as a string.
     */
    getManifestString(): string;
    /**
     *
     * @returns The header of a manifest file (Version Header + Created By Header).
     */
    getManifestMainAttributes(): string;
    /**
     *
     * @returns A sha256 digest of the manifest file.
     */
    getManifestDigest(): Promise<string>;
    /**
     *
     * @returns A sha256 digest of the main attributes (Version Header + Created by header) of the
     * manifest file
     */
    getManifestMainAttributesDigest(): Promise<string>;
    /**
     *
     * @param bundleEntry - Adds a bundle entry to the list of existing bundle entries.
     */
    addBundleEntry(bundleEntry: BundleEntry): void;
    /**
     *
     * @returns The signature file as a string.
     */
    getSignatureFileOutput(): Promise<string>;
}