/// <reference types="node" />
import { BehaviorSubject } from "rxjs";
import { ByzCoinRPC, IStorage } from "@dedis/cothority/byzcoin";
import { SpawnerInstance } from "@dedis/cothority/byzcoin/contracts";
import { IdentityDarc, SignerEd25519 } from "@dedis/cothority/darc";
import { Scalar } from "@dedis/kyber";
import { AddressBook } from "./addressBook";
import { CoinBS } from "./byzcoin/coinBS";
import { Calypso } from "./calypso";
import { CredentialSignerBS } from "./credentialSignerBS";
import { CredentialStructBS } from "./credentialStructBS";
import { ICoin } from "./genesis";
import { KeyPair } from "./keypair";
import { SpawnerTransactionBuilder } from "./spawnerTransactionBuilder";
/**
 * The User-class has references to all other needed classes.
 * Its only additional data is the private key, which is not available in any other class.
 * To allow for multiple users in the same db, `dbBase` is prefixed to all keys used by the user.
 *
 * To instantiate a user class, you should use one of the Builder.retrieveUser* methods.
 *
 * The user class and all classes it references are built on a simple premise:
 * the only necessary data is the credential-ID and the private key.
 * All other data is fetched live from the chain.
 * A caching system makes sure that this loading is fast after a first warming up of the cache.
 * Interacting with ByzCoin is optimized to only fetch changes of the instances.
 */
export declare class User {
    bc: ByzCoinRPC;
    db: IStorage;
    kpp: KeyPair;
    dbBase: string;
    credStructBS: CredentialStructBS;
    spawnerInstanceBS: BehaviorSubject<SpawnerInstance>;
    coinBS: CoinBS;
    credSignerBS: CredentialSignerBS;
    addressBook: AddressBook;
    calypso?: Calypso;
    get kiSigner(): SignerEd25519;
    get identityDarcSigner(): IdentityDarc;
    static readonly keyPriv = "private";
    static readonly keyCredID = "credID";
    static readonly keyMigrate = "storage/data.json";
    static readonly versionMigrate = 1;
    static readonly urlNewDevice = "/register/device";
    static migrate(dbFrom: IStorage, dbNew?: IStorage, base?: string): Promise<void>;
    constructor(bc: ByzCoinRPC, db: IStorage, kpp: KeyPair, dbBase: string, credStructBS: CredentialStructBS, spawnerInstanceBS: BehaviorSubject<SpawnerInstance>, coinBS: CoinBS, credSignerBS: CredentialSignerBS, addressBook: AddressBook, calypso?: Calypso);
    switchKey(previous: KeyPair): Promise<KeyPair>;
    getUrlForDevice(priv: Scalar): string;
    save(base?: string, priv?: Buffer, credID?: Buffer): Promise<void>;
    clearDB(base?: string): Promise<void>;
    iCoin(): ICoin;
    startTransaction(): SpawnerTransactionBuilder;
    executeTransactions(addTxs: (tx: SpawnerTransactionBuilder) => Promise<unknown> | unknown, wait?: number): Promise<void>;
}
export interface IMigrate {
    keyPersonhood?: string;
    keyIdentity: string;
    version?: number;
    contact: {
        credential: Buffer;
    };
}