/// <reference types="node" />
import { KeyPair } from "../typings/key-types";
interface SecretBoxOptions {
    disableKeyPairs: boolean;
}
export declare class SecretBox {
    private readonly options?;
    private initialized;
    private key?;
    constructor(options?: SecretBoxOptions | undefined);
    withMasterKey(masterKey: string): this;
    withoutMasterKey(): this;
    private usesKey;
    private getKey;
    encrypt(arrayBuffer: WithImplicitCoercion<string | Uint8Array | readonly number[]>, pair?: KeyPair): Promise<Buffer>;
    decrypt(buffer: Buffer, pair?: KeyPair): Promise<Buffer>;
}
export {};