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Secure Your Embedded Devices

6528A–SMIC–17 May 06

Scenario #2: The user signs an important document stored on a Flash mass storage device.

1. As in scenario #1, the user connects the token and unlocks it through the relevant holder

authentication method.

2. Special commands now allow the PC to access the Flash memory, decrypted on-the-fly by

the secure microcontroller, which holds the encryption keys. The user gets the document

onto their PC.

3. Upon the user’s request, the document is signed by the token using the “Generate Signa-

ture” command.