Microsemi Certificate Public Key (MCPK)

The Microsemi certificate public key (MCPK) is a trusted immutable NIST P-384 768-bit elliptic curve public key used for checking the Microsemi signature of the device's X.509-compliant certificateā€”also known as the supply chain assurance certificate. MCPK is stored in the pNVM. The system controller uses this key to verify the signature on its own certificate every time it is requested to export it. Although MCPK is a public key used in multiple devices of the same type and vintage, it is encoded by the PUF to provide confidentiality and to check for authenticity, in order to prevent tampering.