/// <reference types="node" />
/// <reference types="pouchdb-core" />
import Identifier from '../../../Identifier';
import IResolver from '../../../resolvers/IResolver';
/**
 * Named Arguments of Did Protocol
 */
export interface DidProtocolOptions {
    /**
     * Identifier who wants to send requests.
     */
    sender: Identifier;
    /**
     * Resolver for resolving identifier documents
     */
    resolver: IResolver;
}
/**
 * Hub Protocol for decrypting/verifying and encrypting/signing payloads
 */
export default class DidProtocol {
    /**
     * Client's Identifier to be used for signing and decrypting.
     */
    private sender;
    /**
     * Resolver for resolving Identifier Documents
     */
    private resolver;
    /**
     * Crypto factory defining the crypto API
     */
    private cryptoFactory;
    /**
     * Key store for storing keys
     */
    private keyStore;
    /**
     * User agent options
     */
    private options;
    /**
     * Authentication constructor
     * @param options Arguments to a constructor in a named object
     */
    constructor(options: DidProtocolOptions);
    /**
     * Unwrapping method for unwrapping requests/responses.
     * Decrypt a cipher using [PrivateKey] of Client Identifier and then verify payload.
     * @param encryptionKeyReference key reference of private key in keystore used to decrypt.
     * @param cipher the cipher to be decrypted and verified by client Identifier.
     */
    decryptAndVerify(encryptionKeyReference: string, cipher: Buffer): Promise<any>;
    /**
     * Wrapping method for wrapping requests/responses.
     * Sign a payload using [PrivateKey] in client's keystore and encrypt payload using [PublicKey]
     * @param payload the payload to be signed and encrypted by client Identifier.
     * #param receiverId identifier for the receiver.
     */
    signAndEncrypt(payload: any, receiverId: string): Promise<string>;
}