import { MatrixClient } from "matrix-js-sdk";
import { MatrixMemberReader } from "../memberReader/MatrixMemberReader";
/**
 * Sign an object (obj) with the users ed25519 key
 */
export declare function signObject(client: MatrixClient, obj: any): Promise<void>;
/**
 * Verifies whether the signature on obj (obj.signature) is valid.
 * This validates:
 * - Whether the object has been created by the Matrix user
 *    (by checking the signature with that user's public key)
 * - Whether that user has access to the room (this is delegated to matrixMemberReader)
 *
 * Throws an error if invalid
 */
export declare function verifyObject(client: MatrixClient, memberReader: MatrixMemberReader, obj: any, eventTypeAccessRequired: string): Promise<void>;