import { type KeyObject } from 'crypto';
export interface BoatKeys {
    identity: KeyObject;
    inbox: KeyObject;
}
export interface BoatPublicKeys {
    identity: string;
    inbox: string;
}
export declare class BoatKeyStore {
    private readonly file;
    private keys;
    private writeChain;
    constructor(dataDir: string);
    load(): void;
    get(): BoatKeys | undefined;
    publicKeys(): BoatPublicKeys | undefined;
    ensure(): Promise<BoatKeys>;
    flush(): Promise<void>;
    private persist;
}