licensing | 易学教程

How to prevent usage of expired license through system clock tampering? [closed]

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问题 I am currently working on a license manager using java, I will be specifying a start and end date for my application so I can force a licensed user to re-license the program after a certain amount of time. But the problem I am facing is that any one can roll-back their system date and time in order to maintain the validity of license. Is there any way in Java to detect the system date and time is changed. I have already tried Network Time Protocol to get the current date and time from a time

Tool for licensing and protect my Delphi Win32 apps [closed]

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问题 I am looking a tool for protect and licensing my commercial software, Ideally must provide an SDK compatible with Delphi 7-2010, support AES encryption, Keys generator and capacity to create trial editions of my application. I am currently evaluating ICE License. Someone has experience with this software? 回答1: I have used OnGuard (using the Delphi 2009/2010 source from SongBeamer) along with Lockbox to handle encryption with success. Both are commercial quality libraries and are free to use

Can we redistribute Oracle tools.jar? [closed]

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问题 Can the tools.jar which comes with the Oracle JDK be distributed along with a commercial product which depends on it (that is, legally, according to the terms of Oracle's license)? Whether yes or no, please provide a reference to substantiate your answer. 回答1: According to my reading, yes, but with some caveats: You must redistribute the entire Oracle JDK, OR the entire JRE with just "The javac bytecode compiler" which includes tools.jar; that redistribution is allowed to be "bundled" with

How can I make my application have a 30 day trial period [duplicate]

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问题 This question already has an answer here: Create an application that will expire after a trial period [duplicate] 5 answers how to create trial period setup file for 30 days of my c# windows application? 回答1: Making C# application a 30 day trial version http://www.dotnetspider.com/forum/130150-Making-C-application-day-trial-version.aspx How to add more functionality in setup file? - C# http://www.daniweb.com/forums/thread226490.html 回答2: One possible solution is to use the registry and write

Can I use Qt LGPL license and sell my application without any kind of restrictions? [closed]

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问题 I want to start a cross-platform project. I had my researches and now I am almost certain Qt is the right deal. There is a big obstacle here though: licensing . I want to sell my project and I also don't want to give out any source related to my work or pay for a license. I checked and noticed Qt offers both commercial and open source solutions. I have heard too many conflicting sayings on Qt licensing which confused me a lot. Some say that even if I use LGPL version of Qt, I still need to

maven report on licenses your project depends on [closed]

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I've got a big multi-module project, and I'd like to generate a report that shows all the licenses of all the things the project depends on. I looked at tattletale, but it doesn't seem to do the trick. And I can easily find a plugin that will squirt a license into the top of each source file, but this exact thing is defying my googling. Pascal Thivent The Maven Project Info Reports Plugin can be used to generate a Project Dependencies report that lists all dependencies and also groups them by licenses . The project-info-reports:dependencies goal can be used to generate an individual report but

How can I make my application have a 30 day trial period [duplicate]

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Which open source licenses are compatible with the Apple's iPhone and its official App Store ? [closed]

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I'm writing an iPhone app, and I would like to use a 3rd party library for part of its functionality. I intend on selling it through the App Store and my code will not be open sourced. Which open source licenses allow to make derivate works and publish them under apple's own conditions ? In Short/TL;DR: The LGPL and application stores have a few incompatibilities which means that you do not have the rights to distribute LGPL code on DRM-enabled AppStores or locked devices. It is best if you look for alternative implementations of the library under other laxer licenses like the Apache 2 License

How to make software expire on a certain date on Windows? [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I have a piece of Windows/C++ application which includes a hard coded expiry date, so that the release expires and stops running on a certain date like, 30 of august 2009. Obviously the user can take back the system time to work around this limitation. Is there a good way to stop

My app got rejected from google play due to some issue with network policy?

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问题 Following is the message-- and had to reject it because it violates our device and network abuse policy and section 4.4 of the Developer Distribution Agreement . If you submitted an update, the previous version of your app is still live on Google Play. Here’s how you can submit your app for another review: Modify your app to make sure it doesn’t access or use a service or API in a manner that violates its terms of service; for example, by enabling background play of YouTube videos. Read