import * as crypto from 'crypto';
import * as stream from 'stream';
type Callback = (err?: Error) => void;
export default class CipherStream extends stream.Transform {
    cipher: crypto.Cipher;
    hexIv: Buffer;
    ivAppended: boolean;
    constructor(password: Buffer, aesAlgorithm: string, ivSize: number);
    _flush(callback: Callback): void;
    _transform(chunk: Buffer, _encoding: string, callback: Callback): void;
    throwError(err: Error): void;
}
export {};