Roots of trust in intellectual property (ip) blocks in a system on a chip (soc)

A method comprising:

• receiving, by host intellectual property (IP) block in a multi-chip package (MCP) in a first computing system, a request by a second computing system to establish a secure communications session with a selected one of a plurality of IP blocks of the MCP;
• authenticating and attesting, by a primary root of trust (RoT) IP block (PRIB) in the MCP, the second computing system;
• signing, by the host IP block, evidence of the PRIB with a PRIB key;
• sending, by the host IP block, the signed evidence of the PRIB to the second computing system;
• and
• establishing the secure communications session between the second computing system and the selected IP block of the MCP if the PRIB is trusted by the second computing system based at least in part on the signed evidence of the PRIB.

At least one machine-readable storage medium comprising instructions which, when executed by at least one processor, cause the at least one processor to:

• receive, by host intellectual property (IP) block in a multi-chip package (MCP) in a first computing system, a request by a second computing system to establish a secure communications session with a selected one of a plurality of IP blocks of the MCP;
• authenticate and attest, by a primary root of trust (RoT) IP block (PRIB) in the MCP, the second computing system;
• sign, by the host IP block, evidence of the PRIB with a PRIB key;
• send, by the host IP block, the signed evidence of the PRIB to the second computing system;
• and
• establish the secure communications session between the second computing system and the selected IP block of the MCP if the PRIB is trusted by the second computing system based at least in part on the signed evidence of the PRIB.