Time Stamping Authority (TSA)

The Time Stamping Authority (TSA) of the Swiss Government PKI is a certified service and can provide qualified confirmation of the time of signature when signing documents.

• General information

  In order to be able to use the TSA service correctly, it must be specified for use in the signature software used in each case.

  • Service URL: http://tsa.pki.admin.ch/tsa

• TSA in DesktopSigner

  The DesktopSigner signature software (Fed. Adm. software layer 1) contains the Swiss Government PKI's TSA service as standard. You can find more information on DesktopSigner on our FOITT client platform in the user manual.

• Support

  The Swiss Government TSA does not provide support in connection with the use of the TSA service.

• Documents

  • Quick Guide: Einrichten des TSA-Servers der SG-PKI im Adobe Acrobat Reader

    PDF529.36 kB3 February 2026

  • Swiss Government PKI TSA Certificate 2025

    ZIP2.27 kB30 October 2025

  • TSA: Swiss Government PKI Time Stamping Authority - Policy

    PDF424.83 kB14 October 2025