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Figure 2 : Hardware Configuration of the TOE
Controller Board
The Controller Board is a device that contains Processors, RAM, NVRAM, Ic Key, and FlashROM.
The following describes the components of the Controller Board:
- Processor
A semiconductor chip that performs basic arithmetic processing for MFP operations.
- RAM
A volatile memory medium which is used as a working area for image processing such as
compressing/decompressing the image data. It can also be used to temporarily read and write internal
information.
- NVRAM
A non-volatile memory medium in which TSF data for configuring MFP operations is stored.
- Ic Key
A security chip that has the functions of random number generation, cryptographic key generation and
digital signature. It has the memory medium inside, and the signature root key is installed before the
TOE is shipped.
- FlashROM
A non-volatile memory medium in which the following software components are installed:
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