Abstract: In general, embodiments relate to a method for establishing trust between supervisors in a network device, the method including obtaining, by a first supervisor, signed platform configuration register (PCR) values from a second supervisor, wherein the first supervisor and the second supervisor are located in the network device, comparing the signed PCR values with stored PCR values, where the stored PCR values were previously obtained by the first supervisor from the second supervisor, and establishing, based on the comparison, trust with the second supervisor.

Abstract: Verifying a hardware license and controlling hardware features includes receiving a first part of a license payload and a license signature covering the license payload from a CPU, the license signature being generated using a private encryption key; receiving a second part of the license payload from a memory, the CPU being unable to modify the second part of the license payload; generating a hash using the first part and the second part of the license payload; and verifying the license signature using the hash and a public encryption key associated with the private encryption key. When the verifying is successful, communicating with circuitry to enable functionality of the circuitry specified in the license payload.

Abstract: Verifying a hardware license and controlling hardware features includes receiving a first part of a license payload and a license signature covering the license payload from a CPU, the license signature being generated using a private encryption key; receiving a second part of the license payload from a memory, the CPU being unable to modify the second part of the license payload; generating a hash using the first part and the second part of the license payload; and verifying the license signature using the hash and a public encryption key associated with the private encryption key. When the verifying is successful, communicating with circuitry to enable functionality of the circuitry specified in the license payload.

Abstract: In general, embodiments relate to methods and systems for signing a software image (SWI), distributing the signed SWI to one or more network devices, and verifying, on a per-network device basis, the signed SWI.

Abstract: In general, embodiments relate to methods and systems for signing a software image (SWI), distributing the signed SWI to one or more network devices, and verifying, on a per-network device basis, the signed SWI.