import crypto from 'crypto';
import { Readable } from 'stream';
export interface KeyAndIv {
    key: Buffer;
    iv: Buffer;
}
export declare function createAES256EncryptStreamWithIv({ key, iv }: KeyAndIv): crypto.Cipheriv;
export declare function signWithSHA256AndRSA(input: NodeJS.ReadableStream, privateKeyPem: string): Readable;
export declare function verifyWithSHA256AndRSA(signedDataBuffer: Buffer, publicKey: string, signature: string): boolean;
export declare function deriveAES256KeyAndIv(password: string): KeyAndIv;
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