import type { ParsedObject } from './types';
import { Descriptor } from './Descriptor';
type CencAttributes = {
    defaultKid?: string;
};
export declare class ContentProtection extends Descriptor {
    static readonly ALLOWED_CHILDREN: string[];
    ref?: string;
    refId?: string;
    robustness?: string;
    cenc?: CencAttributes;
    constructor(initialValues?: Partial<ContentProtection>, ctx?: ParsedObject);
    formatParams(initialValues?: Partial<ParsedObject>, ctx?: ParsedObject): void;
    verifyAttributes(ctx: ParsedObject): void;
    verifyChildren(ctx: ParsedObject): void;
    get serializedProps(): ParsedObject;
}
export {};