export declare type BrontosaurusKey = {
    readonly public: string;
    readonly private: string;
};
export declare const generateKey: () => BrontosaurusKey;
export declare const signString: (target: string, privateKey: string) => string;
export declare const verifyString: (target: string, token: string, publicKey: string) => boolean;
export declare const serializeString: (before: string) => string;
export declare const deserializeString: (before: string) => string;