Does Acrobat SDK support support effective time control functions

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Does Acrobat SDK support support effective time control functions

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Please explain what would constitite an "effective time control function" and what API you would wish to use? We may need to understand your usage case.

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A time limit, such as a month, users can read PDF files in one month.Users can't read out of time

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1. Write a Digital Rights Management plug-in ("DRM") for Acrobat Reader. The fee is $50,000 per year. Each user must install it. You must be an expert in C++ and encryption.

2. Check the date in JavaScript. This is not secure because anyone can turn off JavaScript, but it might do for a simple low security need.

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"Each user must install it",refer to Adobe Acrobat Reader? It means that if I use your plug-in to achieve PDF effective time control function，can I only use Adobe Acrobat Reader to open the processed PDF files?

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3. License Acrobat LiveCycle Rights Management. Fee by negotiation, maybe similar to writing a DRM plug-in but no programming needed.

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If using a plug-in: each user must install Acrobat Reader AND your plug-in. The protection must use a private encryption that you create. So other products will not be able to open the files at all.

There would be no way to force a time limit on the many other PDF viewers.

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Both DRM and License Acrobat LiveCycle Rights Management can achieve PDF effective time control function？DRM $50,000 per year ,License Acrobat LiveCycle Rights Management ,fee by negotiation and more than $50,000 per year?Are they all JAR packages？

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DRM would be a C++ plugin that you write and have approved by Adobe (it must meet their strict rules Or they will not allow it).

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You should also bear in mind that your DRM plug-in MUST connect to a network server to get the time, otherwise the end user can just change their computer's clock.