import { WebexPlugin } from '@webex/webex-core';
import { FileDownloadOptions, IEncryption } from './types';
/**
 * @description Encryption APIs for KMS
 * @class
 */
declare class Cypher extends WebexPlugin implements IEncryption {
    readonly namespace = "cypher";
    private readonly $webex;
    registered: boolean;
    /**
     * Constructs an instance of the class.
     *
     * @param {...any[]} args - The arguments to pass to the superclass constructor.
     *
     * @remarks
     * This constructor calls the superclass constructor with the provided arguments.
     * It also assigns the `webex` property to the `$webex` property, ignoring TypeScript errors.
     */
    constructor(...args: any[]);
    /**
     * Registers the device to WDM. This is required for metrics and other services.
     * @returns {Promise<void>}
     */
    register(): Promise<void>;
    /**
     * Deregisters the device.
     * @returns {Promise<void>}
     */
    deregister(): Promise<void>;
    /**
     * Downloads and decrypts a file from the given URI.
     *
     * @param {string} fileUri - The URI of the file to be decrypted.
     * @param {FileDownloadOptions} options - The options for file download.
     * @returns {Promise<ArrayBuffer>} A promise that resolves to the decrypted ArrayBuffer.
     * @throws {Error} If the file download or decryption fails.
     *
     * @example
     * ```typescript
     * const attachmentURL = 'https:/myfileurl.xyz/zzz/fileid?keyUri=somekeyuri&JWE=somejwe';
     * const options: FileDownloadOptions = {
     *   useFileService: false,
     *   jwe: somejwe, // Provide the JWE here if not already present in the attachmentURL
     *   keyUri: someKeyUri, // Provide the keyURI here if not already present in the attachmentURL
     * };
     * const decryptedBuf = await webex.cypher.downloadAndDecryptFile(attachmentURL, options);
     * const file = new File([decryptedBuf], "myFileName.jpeg", {type: 'image/jpeg'});
     * ```
     */
    downloadAndDecryptFile(fileUri: string, { useFileService, ...options }?: FileDownloadOptions): Promise<ArrayBuffer>;
}
export default Cypher;