/// <reference types="node" />
import { Stream } from 'stream';
import { PrivacyStrategy } from './privacy';
/**
 * The plain privacy strategy.
 * <br>
 * <br>
 * This strategy does not encrypt nor decrypt the data.
 */
export declare class PlainPrivacyStrategy implements PrivacyStrategy {
    /**
     * Create instance of this strategy
     * @return the instance of this strategy
     */
    static create(): any;
    private constructor();
    /**
     * Get the privacy type which is set as PLAIN
     * @return the privacy type's int value
     * @see PrivacyType
     */
    getPrivacyType(): number;
    /**
     * Return same byte stream
     * @param stream the byte stream to encrypt
     * @return same byte stream
     */
    encrypt(stream: Stream): Stream;
    /**
     * Return same byte stream
     * @param encryptedStream the byte stream to decrypt
     * @return same byte stream
     */
    decrypt(encryptedStream: Stream): Stream;
}