import { EncryptedIVRequest, EncryptedIVResponse, ScramLoginParams, ScramLoginResponseBody } from '@iotize/tap/service/impl/scram';
import { CallContext, VirtualTap } from '../virtual-tap-server';
export declare class ScramService {
    server: VirtualTap;
    keepAliveCounter: number;
    private _options;
    private _encryptedFrameConverter;
    private _encryptionAlgo?;
    /**
     * Clear encrypted session.
     * Destroys frame counter, session keys and initialization vectors
     * This will also stop encrypted communication if it was running
     */
    private clearSession;
    private refreshEncryptionAlgo;
    private get encryptionAlgo();
    constructor(server: VirtualTap);
    initLogin(context: CallContext<ScramLoginParams>): ScramLoginResponseBody;
    getScramIteration(): number;
    scramInitialized(): Uint8Array;
    private _decodeEncryptedFrame;
    private _encryptTapResponse;
    secoreCom(context: CallContext<Uint8Array>): Uint8Array;
    setInitializationVector(context: CallContext<Uint8Array>): Uint8Array;
    private _updateDecodeInitializationVector;
    comWithIv(context: CallContext<EncryptedIVRequest>): EncryptedIVResponse;
}