pub fn node_config() -> (NodeConfig, NodeConfig) {
    let (validator_consensus_public_key, validator_consensus_secret_key) = exonum::crypto::gen_keypair();
    let (validator_service_public_key, validator_service_secret_key) = exonum::crypto::gen_keypair();
    let (auditor_consensus_public_key, auditor_consensus_secret_key) = exonum::crypto::gen_keypair();
    let (auditor_service_public_key, auditor_service_secret_key) = exonum::crypto::gen_keypair();

    let validator_keys = ValidatorKeys {
        consensus_key: validator_consensus_public_key,
        service_key: validator_service_public_key,
    };
    let genesis = GenesisConfig::new(vec![validator_keys].into_iter());

    let api_address = "0.0.0.0:8000".parse().unwrap();
    let api_cfg = NodeApiConfig {
        public_api_address: Some(api_address),
        ..Default::default()
    };

    let validator_peer_address = "0.0.0.0:2000".parse().unwrap();
    let auditor_peer_address = "0.0.0.0:2002".parse().unwrap();

    let validator_config = NodeConfig {
        listen_address: validator_peer_address,
        peers: vec![auditor_peer_address],
        service_public_key: validator_service_public_key,
        service_secret_key: validator_service_secret_key,
        consensus_public_key: validator_consensus_public_key,
        consensus_secret_key: validator_consensus_secret_key,
        genesis: genesis.clone(),
        external_address: None,
        network: Default::default(),
        whitelist: Default::default(),
        api: api_cfg.clone(),
        mempool: Default::default(),
        services_configs: Default::default(),
    };

    let api_address = "0.0.0.0:8002".parse().unwrap();
    let api_cfg = NodeApiConfig {
        public_api_address: Some(api_address),
        ..Default::default()
    };

    let auditor_config = NodeConfig {
        listen_address: auditor_peer_address,
        peers: vec![validator_peer_address],
        service_public_key: auditor_service_public_key,
        service_secret_key: auditor_service_secret_key,
        consensus_public_key: auditor_consensus_public_key,
        consensus_secret_key: auditor_consensus_secret_key,
        genesis: genesis.clone(),
        external_address: None,
        network: Default::default(),
        whitelist: Default::default(),
        api: api_cfg.clone(),
        mempool: Default::default(),
        services_configs: Default::default(),
    };

    (validator_config, auditor_config)
}