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Method and Apparatus for Physical Presence Assertion through Visual Verification

IP.com Disclosure Number: IPCOM000237527D
Publication Date: 2014-Jun-19
Document File: 3 page(s) / 93K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed are comprehensive visual verification methods to conveniently and efficiently assert physical presence to a server.

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Method and Apparatus for Physical Presence Assertion through Visual Verification

In existing physical presence implementations, pressing a button and/or setting a

jumper are used as the primary method to indicate the physical presence. The existing method requires either opening the server chassis to set the jumper or physically touching/holding a button on the server. This is not always a convenient and efficient method.

For example, on a server rack with a glass door, the user needs to open the rack door or server chassis to assert physical presence. Visual verification can also be a valid way to assert physical presence, which could avoid the above shortcomings.

The presented disclosure provides comprehensive visual verification methods to conveniently and efficiently assert physical presence.

In a preferred embodiment, the full process follows:

1. A request for Physical Presence (PP) from any entity within a chassis causes the hardware to display a unique code (e.g., Quick Response (QR) code or other) to the front panel

A. When the entity sends out a PP request, it also inputs a random number to the visual PP verification unit for random code generation

B. Random number is retrieved by sending GetRandom command to the Trusted Platform Module (TPM) through the TPM Memory-mapped I/O (MMIO) register region

C. Visual PP verification unit combines the random number with other materials to generate either a QR, secure word prompt, or pass code

2. The image is captured externally and then transmitted to the Integrated Management Module. If the display provides a unique code but it is not received within a configurable amount of time, then the operation is cancelled and the display is cleared.

3. The IMM passes the same image to the entity that originated the display output 4. A...