Apparatus and method for transitioning between secure and sub-secure zones

摘要

There is provided a data processing apparatus having a first security zone and a second security zone coupled by a monitor. The monitor applies security credentials to the processing circuitry that transitions from the first security zone to the second security zone to allow the processing circuitry to perform functions in the second security zone. The call gateway containing the transition commands and access parameters stored in the trust store device is used by the monitor to determine when to apply the security certificates to the processing circuitry. The access parameters include a target function or memory location.;