/**
 * Copyright (c) 2018-2023, BOTLabs GmbH.
 *
 * This source code is licensed under the BSD 4-Clause "Original" license
 * found in the LICENSE file in the root directory of this source tree.
 */
import type { IAttestation, IDelegationHierarchyDetails, ICredential, DidUri } from '@kiltprotocol/types';
/**
 * An [[Attestation]] certifies a [[Claim]], sent by a claimer in the form of a [[Credential]]. [[Attestation]]s are **written on the blockchain** and are **revocable**.
 *
 * An [[Attestation]] can be queried from the chain. It's stored on-chain in a map:
 * * the key is the hash of the corresponding claim;
 * * the value is a tuple ([[CType]] hash, account, id of the Delegation, and revoked flag).
 *
 * @packageDocumentation
 */
/**
 * Checks whether the input meets all the required criteria of an [[IAttestation]] object.
 * Throws on invalid input.
 *
 * @param input The potentially only partial [[IAttestation]].
 */
export declare function verifyDataStructure(input: IAttestation): void;
/**
 * Builds a new instance of an [[Attestation]], from a complete set of input required for an attestation.
 *
 * @param credential - The base credential for attestation.
 * @param attesterDid - The attester's DID, used to attest to the underlying claim.
 * @returns A new [[Attestation]] object.
 */
export declare function fromCredentialAndDid(credential: ICredential, attesterDid: DidUri): IAttestation;
/**
 * Tries to fetch the delegationId and if successful fetch the rootId.
 *
 * @param input - The ID of the Delegation stored in [[Attestation]] , or the whole Attestation object.
 * @returns A promise of the affiliated [[DelegationNode]].
 */
export declare function getDelegationDetails(input: IAttestation['delegationId'] | IAttestation): Promise<IDelegationHierarchyDetails>;
/**
 * Custom Type Guard to determine input being of type IAttestation.
 *
 * @param input The potentially only partial IAttestation.
 * @returns Boolean whether input is of type IAttestation.
 */
export declare function isIAttestation(input: unknown): input is IAttestation;
/**
 * Verifies whether the data of the given attestation matches the one from the corresponding credential. It is valid if:
 * * the [[Credential]] object has valid data (see [[Credential.verifyDataIntegrity]]);
 * and
 * * the hash of the [[Credential]] object, and the hash of the [[Attestation]].
 *
 * @param attestation - The attestation to verify.
 * @param credential - The credential to verify against.
 */
export declare function verifyAgainstCredential(attestation: IAttestation, credential: ICredential): void;