/// <reference types="node" />
import { Dict } from '@guarani/types';
import { OctKey } from '../../../jwk/algorithms/oct/oct.key';
import { JsonWebEncryptionContentEncryptionAlgorithm } from '../enc/jsonwebencryption-contentencryption.algorithm';
import { JsonWebEncryptionKeyWrapAlgorithm } from './jsonwebencryption-keywrap.algorithm';
import { WrappedKey } from './types/wrapped-key';
/**
 * Implementation of the dir JSON Web Encryption Key Wrap Algorithm.
 */
declare class DirKeyWrapAlgorithm extends JsonWebEncryptionKeyWrapAlgorithm {
    /**
     * Instantiates a new JSON Web Encryption dir Key Wrap Algorithm to Wrap and Unwrap Content Encryption Keys.
     */
    constructor();
    /**
     * Returns an empty Buffer since the Algorithm does not Wrap the provided Content Encryption Key.
     *
     * @param enc JSON Web Encryption Content Encryption Algorithm.
     * @param key JSON Web Key to be used as the Content Encryption Key used to Encrypt the Plaintext.
     * @returns Empty Buffer as the Wrapped Content Encryption Key.
     */
    wrap(enc: JsonWebEncryptionContentEncryptionAlgorithm, key: OctKey): Promise<WrappedKey<Dict>>;
    /**
     * Returns the provided JSON Web Key as the Content Encryption Key.
     *
     * @param enc JSON Web Encryption Content Encryption Algorithm.
     * @param key JSON Web Key used as the Content Encryption Key.
     * @param ek ~Wrapped Content Encryption Key~.
     * @returns Provided JSON Web Key as the Content Encryption Key.
     */
    unwrap(enc: JsonWebEncryptionContentEncryptionAlgorithm, key: OctKey, ek: Buffer): Promise<Buffer>;
}
/**
 * Direct use of a shared symmetric key as the CEK.
 */
export declare const dir: DirKeyWrapAlgorithm;
export {};