import { Response } from '../utils/response';
export declare function signMessage(params: {
    message: string;
    key_type: 'posting' | 'active' | 'memo' | 'owner';
}): Promise<Response>;
export declare function verifySignature(params: {
    message_hash: string;
    signature: string;
    public_key: string;
}): Promise<Response>;