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runtime license

vmark

Hi all. Inside "Verilog simulation user guide", I have found an option for ncprotect command: "runtime_license" which can be added to the source hdl code to increase protection. I want to add this to my source code, but I do not understand very well following terms:

- shared library to be loaded

- the name of the entry function to be called when the library is loaded

- the feature string to be passed to the entry function

- match value to be compared with the return value of the entry function

 

Can anyone please help about the meaning of this terms, maybe with some example?

 

Thanks!

  • The runtime license options are intended for those who want to encrypt their HDL intellectual property and also include a way to ensure that those who use that IP also have purchased a runtime license to use it.

    The options allow the IP creators to associate a shared-library which will be called to verify that a particular customer has a valid run-time license. Before the IP is executed by the simulator, the simulator will call the given entry point in the given library to ask whether or not the IP is licensed. That entry point can do whatever processing is necessary to answer that question. (For example, the IP creator would write code that would query an LM license server running on another node to see if a user has access to a particular license string.) If that entry point returns the given match code to the simulator, it will proceed with the simulation.

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