X.509 is client certificate authentication requiring an HTTPS connection to SAP Mobile Platform. SAP Mobile Platform can authenticate users based on their personal X.509 certificates.
SAP Mobile Platform supports certificate authentication using X.509, a standard for digital certificates. X.509 provides the strongest form of authentication security in SAP Mobile Platform by managing authentication across platforms and out to the network edge.
This form of authentication always uses the X.509 User Certificate authentication provider. Clients using this form of authentication must always connect to SAP Mobile Platform on the two-way HTTPS port (the default is port 8082). For authentication to succeed, the Certificate Authority (CA) certificate used to sign the user's certificate must be in the SAP Mobile Platform keystore.