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

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Adding API Features<br />

Contents Glossary Index Troubleshooting<br />

Attributes (Continued)<br />

Attribute Description Default Setting<br />

Write-Once Select this check box if you want to<br />

allow writing the feature only once,<br />

without providing a write password<br />

(specify any value in the<br />

WritePassword parameter of the<br />

SFNTWriteString API function). This<br />

attribute is suitable for accepting<br />

string data that a user provides only<br />

once for validation (such as the user<br />

name) without exposing<br />

the write password.<br />

However, note that this value can be<br />

overwritten in the field using the<br />

Update value command.<br />

Typically, this attribute is best used<br />

with the read-only attribute.<br />

Not selected<br />

5. Specify a string containing up to 2032 3 ASCII printable characters<br />

for the default instance.<br />

If Write-Random check box is clear, you can click Browse to copy<br />

the contents of a file into the string feature.<br />

6. Specify a write password if you want to write the feature value using<br />

the SFNTWriteString API function. The option will be disabled if you<br />

have selected the Read-Only option.<br />

7. Selecting the Add instances later check box will allow you to add<br />

new feature instances later in the License Manager screen. This<br />

option helps in modifying the "licensing values" without modifying<br />

the "licensing implementation" in the application/code.<br />

The option will be disabled if you have selected the Write-once and/<br />

or Write-random option.<br />

3.The maximum length is 2032 bytes for SHK XM keys; and 888 bytes for non-XM keys.<br />

<strong>Sentinel</strong> <strong>Hardware</strong> <strong>Keys</strong> Developer’s <strong>Guide</strong> 123

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