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Sentinel Hardware Keys Developer's Guide - Customer Connection ...

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Frequently Asked Questions<br />

Contents Glossary Index Troubleshooting<br />

Question 6 - Can Secure Update Utility of version 1.0 apply the .upw<br />

file generated by SHK1.2.1 and higher?<br />

No, since the .upw file generated by <strong>Sentinel</strong> <strong>Hardware</strong> <strong>Keys</strong> version 1.2.1<br />

and higher will not be applied using the Secure Update library of version<br />

1.0, please ensure that you distribute the latest Secure Update Utility and<br />

associated DLLs to your customer/distributor.<br />

Question 7 - If I select Delete all licenses from token while generating<br />

*.nlf file, will the end user be able to apply this file on the token<br />

as many times as he/she wants?<br />

No, the new license can be added only once by applying the license addition<br />

(.nlf) file.<br />

Question 8 - What is the role of Device Update Counter value in<br />

removing all licenses from the token? In what scenarios its value is<br />

updated?<br />

Device Update Counter is the global update counter in the end user token<br />

which is incremented every time all licenses from the token are deleted. Its<br />

value is also updated in the following scenarios:<br />

Cheat counter value updates.<br />

Last known date and time (LKDT) updates, once the lease operation<br />

has been performed.<br />

User limit value updates.<br />

Question 9 - In case of Bidirectional Updates, which factors should<br />

be taken in consideration before generating the update code for a<br />

feature?<br />

The ISV’s should ensure that one Update file shall contain a single update<br />

action because the update actions of conflicting nature should not be<br />

applied with each other. The list of such update actions is provided below:<br />

Counter<br />

Increment Counter<br />

Overwrite Counter<br />

<strong>Sentinel</strong> <strong>Hardware</strong> <strong>Keys</strong> Developer’s <strong>Guide</strong> 165

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