Device with chain of trust

A non-transitory computer-readable medium storing code comprising instructions which, when executed by a processor of an electronic device, cause the electronic device to:

• authenticate a root of trust entity as part of a boot-up procedure of a system that includes the root of trust entity;
• receive, by the root of trust entity and as part of the boot-up procedure of the system, a first portion of code associated with a first entity of the system based at least in part on authenticating the root of trust entity;
• generate a first measurement result of the first portion of code associated with the first entity based at least in part on receiving the first portion of code;
• identify, by the root of trust entity, a second measurement result associated with the first portion of code associated with the first entity based at least in part on generating the first measurement result;
• determine, by the root of trust entity, whether the first measurement result matches the second measurement result as part of authenticating the first portion of code associated with the first entity as part of the boot-up procedure;
• and
• transmit, by the root of trust entity, an indication of whether the first measurement result matches the second measurement result.

A method, comprising:

• authenticating a root of trust entity as part of a boot-up procedure of a system that includes the root of trust entity;
• receiving, by the root of trust entity and as part of the boot-up procedure of the system, a first portion of code associated with a first entity of the system based at least in part on authenticating the root of trust entity;
• generating a first measurement result of the first portion of code associated with the first entity based at least in part on receiving the first portion of code;
• identifying, by the root of trust entity, a second measurement result associated with the first portion of code associated with the first entity based at least in part on generating the first measurement result;
• determining, by the root of trust entity, whether the first measurement result matches the second measurement result as part of authenticating the first portion of code associated with the first entity as part of the boot-up procedure;
• and
• transmitting, by the root of trust entity, an indication of whether the first measurement result matches the second measurement result.