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High Performance Microchip Supply - Under Secretary of Defense ...

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FINDINGS ___________________________________________________________________<br />

fully custom integrated circuits and gate array class devices. While<br />

these devices are potentially corruptible, they provide superiority in<br />

functionality, speed, and power consumption. Ensuring that these are<br />

truly trusted devices is <strong>of</strong> the utmost importance.<br />

Processes under control <strong>of</strong> the Foundry<br />

Figure 5<br />

Processes under control <strong>of</strong> the mask maker<br />

The design <strong>of</strong> an ASIC device is a complex process involving a<br />

team <strong>of</strong> engineers that includes specialists in s<strong>of</strong>tware, firmware,<br />

system architecture, timing, circuit and device design, and testing. In<br />

Figure 5, the ASIC design is enclosed in the black dashed line and<br />

mask making in red. The activities in these stages are those that entail<br />

direct access to the chip design database and are thus very high risk,<br />

as is delivery <strong>of</strong> the completed chips. The green box encloses the<br />

fabrication steps under control <strong>of</strong> the foundry, where unauthorized<br />

process changes and outright substitutions are also possible. The<br />

green-enclosed area is the portion <strong>of</strong> the ASIC chip design and<br />

fabrication chain the Trusted Foundry Program is intended to protect.<br />

38 _________________________________________________________ DSB TASK FORCE ON

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