/// <reference types="node" />
import { Transform, TransformCallback } from 'stream';
import { PbeCipherStreamOptions } from './pbe-cipher-stream-options';
export declare class PbeCipherStream extends Transform {
    readonly options: PbeCipherStreamOptions;
    private static readonly SaltLength;
    private static readonly IvLength;
    private cipher;
    constructor(options: PbeCipherStreamOptions);
    _transform(chunk: any, _: string, callback: TransformCallback): void;
    _flush(callback: TransformCallback): void;
}