import { SecureDelegation } from './SecureDelegation';
/**
 * Holds information for user-based access control and encryption of entities.
 */
export declare class SecurityMetadata {
    constructor(json: JSON | any);
    /**
     * This maps the hex-encoded sha256 hash of a key created by the client using a certain [ExchangeData.accessControlSecret] to the
     * [SecureDelegation] for the corresponding delegate-delegator pair. This hash is used by the server to perform access control for
     * anonymous data owners (see [DataOwnerAuthenticationDetails]) and in some cases also by the sdks to quickly find the appropriate
     * exchange key needed for the decryption of the content of the corresponding [SecureDelegation].
     *
     * Note that it is also possible for a secure delegation in this map to have no entry for secretId, encryptionKey or owningEntityId.
     * This could happen in situations where a user should have access only to the unencrypted content of an entity.
     */
    secureDelegations?: {
        [hash: string]: SecureDelegation;
    };
    /**
     * Holds aliases for secure delegation keys that apply to this entity: `a -> b` means that anyone with key `a` has access to the
     * secure delegation in `secureDelegations['b']`.
     *
     * This map is useful in cases when it is not possible to know for certain if the delegate of a new secure delegation will be able
     * to produce the access control key we are planning to use. For example the access control key may be produced by a combination of
     * access control secret and secret foreign key of the entity: what happens if the entity has multiple secret foreign keys? The
     * delegate may have access to only one of them but not all, so if we chose an unlucky secret foreign key in the creation of the
     * access control key the delegate will never be able to access the entity. This field allows to essentially create an access control
     * key and corresponding secure delegation key for each secret foreign key without having to replicate the actual secure delegation.
     */
    keysEquivalences?: {
        [hash: string]: string;
    };
}