P&E Microcomputer Systems Cyclone LC Series, Руководство пользователя

Страница: 119 / 149

User Manual For Cyclone LC Programmers 119
11.4.2 Removing ImageKeys From A Cyclone
It is also easy to remove an ImageKey from the connected Cyclone. The user selects the
ImageKey that they wish to delete and hits the “Delete Encryption Key” button.
Figure 11-7: ImageKey Selected for Deletion
If the ImageKey that was selected for deletion is one that is required to decrypt one or more eSAP
images that are on the connected Cyclone, a warning message will be displayed when the Delete
button is pressed. The user may then cancel the deletion or confirm that they wish to proceed.
Figure 11-8: Warning: ImageKey Used By SAP Image on Connected Cyclone
11.4.3 Loading and Programming with Encrypted SAP Images
From the user's perspective, loading an eSAP file with the Cyclone Image Creation Utility and
programming with that eSAP file looks the same as loading/using a SAP file which is not encrypted
(as long as the appropriate ImageKey exists on the Cyclone).
Figure 11-9: Load Encrypted Image (eSAP) onto Cyclone with Corresponding ImageKey
When the user attempts to load an encrypted programming image onto a Cyclone, the Cyclone will