import * as crypto from 'crypto';
import * as stream from 'stream';
type Callback = (err?: Error) => void;
export default class DecipherStream extends stream.Transform {
    decipher: crypto.Decipher | null;
    password: Buffer | null;
    aesAlgorithm: string;
    ivSize: number;
    ivBufer: Buffer | undefined;
    constructor(password: Buffer, aesAlgorithm: string, ivSize: number);
    _transform(chunk: Buffer, _encoding: string, callback: Callback): void;
    private setupDecipher;
    throwError(err: Error): void;
    _flush(callback: Callback): void;
}
export {};