The server includes a Trusted Platform Module (TPM) as part of the SP. TPM refers to the device, as well as the implementation, by which encrypted configuration information specific to the system is stored. The information serves as metrics against which processes are measured during system boot.
Oracle Solaris uses TPM to securely store encryption keys. TPM, together with the other measures that are described in the Oracle Solaris documentation, secures the system from unauthorized access by users of applications.
The platform owner must initialize TPM by setting an owner password that is used to authorize privileged operations. The platform owner, also called the TPM owner, differs from the traditional superuser.
Securing Systems and Attached Devices in Oracle Solaris 11.3 in the Oracle Solaris 11.3 documentation