/** Cache encryption is separate from the cloud vault's end-to-end encryption. */
export declare function privateStore(home: string, suppliedKey?: Buffer): {
    keyStorage: "os-keychain" | "private-file" | "ephemeral";
    read<T>(name: string): T | null;
    write(name: string, value: unknown): void;
    remove(name: string): void;
    close(): void;
};