appsettings.json configuration

After successful installation of the SIGNIUS Seal Client application, an important step is to properly set the application operating parameters in the appsettings.json configuration file. This file contains all necessary information regarding connections, communication protocols and details about certificates and API keys. Below is detailed information about the configuration of this file and tips that will allow for a smooth transition from the installation process to launching and using the application.

The appsettings.json file contains key configurations for the SIGNIUS Seal Client application, including settings for ports and protocols used to communicate with external services.

appsettings.json structure

The configuration file consists of various sections that describe both local and remote processes, as well as logging and debugging details.

  • localRest: Enables REST API support on the local server.

  • localHost: The localhost address, usually

  • localPort: The port on which the local REST API server listens, default is 8089. This is the port to use when querying from external tools and application servers

  • localUseHttps: Specifies whether the connection to the local server should use HTTPS.

  • localCertificate and localCertificatePassword: Path and password for the certificate (P12/PFX) used for the HTTPS connection.

Login and Debug Settings

  • FullDebug: Enables full logging for debugging purposes.

  • Serilog: Serilog logging configuration, including logging levels and targets to which logs are written.


  1. The localPort settings should match your firewall configuration and port forwarding to enable proper communication.

  2. Changes to the appsettings.json file require an application restart for the new configuration to take effect.

  3. If you have problems with installation, please contact technical support.

  4. Carefully follow Vendor's instructions for activating and configuring your license.

Configuring the SIGNIUS Seal Client Connection

This documentation describes the process of configuring a connection to the SIGNIUS Seal Client digital signing service. Depending on the software version, the user can choose between many service providers. Below are the detailed configuration steps for the GlobalSign provider.

Go to the "Connection settings" tab

After pasting the license, the user goes to the Connection settings tab to enter the necessary information to connect to the selected digital signature service provider.

Choosing a service provider

From the Provider Type drop-down list, the user selects providers.

Enter the supplier's URL

In the Provider URL field, the user enters the URL address that will be used for communication and sending queries to the provider.

Entering the API key and API secret

In the following fields, the user enters the API key (API-Key) and API secret, which are required for authentication and communication with the service

Loading the client certificate

The user must also specify the path to the client certificate file with the extension .pfx in the Client certificate filename field and enter the certificate password in the Client certificate password field, if required.

Establishing a connection

Po wprowadzeniu wszystkich wymaganych informacji, użytkownik finalizuje proces klikając przycisk "Connect".

Przykładowa konfiguracja:

After completing the above steps, the user will be configured to connect to the selected digital signature service provider. This is necessary to use the signing functions offered by SIGNIUS Seal Client within the application.

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