A Public Key Infrastructure (PKI) is an effective tool for the protection of systems and services in the network. It forms the basis of digital businesses: It ensures secure access to physical and digital resources, ensures secure communication between people, software, and devices and enables the digital signing of documents and transactions.
The use of a company-wide (PKI) is indispensable in modern IT infrastructures. Various certificates are needed for different requirements. For example, public certificates are required for communication with external partners via web servers (SSL/TLS), VPN gateways (IPSec), or via email (S/MIME use).
Trusted certificates are also required for internal resources to secure different processes. In addition to strong password-independent authentication options, this also includes other, certificate-based authentication methods in LAN and WLAN infrastructures. Digital signatures or machine certificates for device authentication are further examples of applications.