/**
 * 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 { HexString, DidUri, IAssetClaim, ICType, IDelegationNode, IPublicCredential, IPublicCredentialInput } from '@kiltprotocol/types';
/**
 * Calculates the ID of a [[IPublicCredentialInput]], to be used to retrieve the full credential content from the blockchain.
 *
 * The ID is formed by first concatenating the SCALE-encoded [[IPublicCredentialInput]] with the SCALE-encoded [[DidUri]] and then Blake2b hashing the result.
 *
 * @param credential The input credential object.
 * @param attester The DID of the credential attester.
 * @returns The credential ID.
 */
export declare function getIdForCredential(credential: IPublicCredentialInput, attester: DidUri): HexString;
/**
 * Checks the [[IPublicCredential]] with a given [[CType]] to check if the included claim meets the [[schema]] structure.
 *
 * This function is meant to be used by consumers of this [[IPublicCredential]], once they have retrieved the full credential content.
 *
 * @param credential A [[IPublicCredential]] for the attester.
 * @param cType A [[CType]] to verify the [[Claim]] structure.
 */
export declare function verifyAgainstCType(credential: IPublicCredential, cType: ICType): void;
declare type VerifyOptions = {
    cType?: ICType;
};
/**
 * Verifies if a received [[IPublicCredential]] is valid, meaning if its content has not been tampered with and optionally if its structure matches a given [[ICType]].
 *
 * **Successful verification of a public credential still requires the consumer to check the `revoked` property and take the appropriate action**.
 *
 * We recommend consumer of credentials to fetch them themselves using the functions exposed in this SDK.
 * Nevertheless, for some use cases having a function that verifies the content of a credential directly could be handy.
 * This function does that: it takes a [[IPublicCredential]], and re-computes its cryptographically-generated ID to verify the content authenticity.
 *
 * @param credential The full [[IPublicCredential]] object.
 * @param options - Additional parameter for more verification steps.
 * @param options.cType - CType which the included claim should be checked against.
 */
export declare function verifyCredential(credential: IPublicCredential, { cType }?: VerifyOptions): Promise<void>;
export declare type PublicCredentialCreationOptions = {
    delegationId?: IDelegationNode['id'] | null;
};
/**
 * Builds a new [[IPublicCredentialInput]] object, from a complete set of required parameters.
 *
 * @param claim An [[IClaim]] object to build the credential for.
 * @param option Container for different options that can be passed to this method.
 * @param option.delegationId The id of the DelegationNode of the Attester, which should be used in the attestation.
 * @returns A new [[IPublicCredentialInput]] object ready to be submitted to the blockchain for issuance.
 */
export declare function fromClaim(claim: IAssetClaim, { delegationId }?: PublicCredentialCreationOptions): IPublicCredentialInput;
export {};