Protocol-Independent remote attestation and sealing
US8161285B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/127
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Messages, including messages in conformance with various protocols, can be hashed and the hash values added to an event log and provided to a Trusted Platform Module (TPM), which can extend one or more Platform Configuration Registers (PCRs) with the hash value, much as it would with the hash of a component that was installed or executed on the computing device with the TPM. Subsequently, the TPM can sign one or more of the PCRs and the signed PCRs can be transmitted, together with the event log and a copy of the messages. The recipient can verify the sender based on the signed PCRs, can confirm that the signed PCRs match the event log, and can verify the hash of the message in the event log by independently hashing it. In another embodiment, an intermediate hashing of the message can avoid transmission of potentially malicious executable instructions within a message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.