/// <reference types="node" />
/// <reference types="node" />
export interface SecurePassthroughSession {
    key: Buffer;
    iv: Buffer;
    seq: number;
}
export default class SecurePassthroughTransport {
    private session?;
    private readonly publicKey;
    private readonly privateKey;
    constructor();
    handshake(sessionPost: (path: string, payload: any, responseType: string) => Promise<any>): Promise<boolean>;
    encrypt(payload: any): {
        encrypted: string;
        seq: number;
    };
    decrypt(data: string): any;
    isSessionEstablished(): boolean;
}