Real path of the private key file (needed by push-management, even though the key itself is held in memory).
Re-reads the certificate chain from disk on next access. The in-memory private key is untouched — construct a new provider to rotate the key (see class doc).
Provides a certificate chain and private key to an OPC UA endpoint.
Implementations may read from memory, disk, or any other source. See also DiskCertificateKeyPairProvider which implements this interface for disk-based access with lazy caching.