license-key

问题 This question already has answers here : Is there a unique Android device ID? (48 answers) Closed 4 years ago . I would like to be able to generate unique serial numbers for each Android device for use in unlocking an application. How could I do this? EDIT: The reason is I want to revamp a paid application and provide users who have paid for the old version, which will have a different package name, a way to obtain the full version by downloading an unlockable free version of the application.

问题 This question already has answers here : Is there a unique Android device ID? (48 answers) Closed 4 years ago . I would like to be able to generate unique serial numbers for each Android device for use in unlocking an application. How could I do this? EDIT: The reason is I want to revamp a paid application and provide users who have paid for the old version, which will have a different package name, a way to obtain the full version by downloading an unlockable free version of the application.

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 software with different unlockable modules. Each module has to be purchased separately. I've started with assigning a unique key to each module via Guid.NewGuid method. Now I have to provide users with serial numbers for activating those upgrades, and then the

问题 I am developing a mobile app which would need constant interaction with the web site using web service. For this purpose I am planning to have some kind of unique mobile ID which can be generated at the time of application download by the user. This unique ID will be used for website login from mobile and can be sent for validation when user submits any reviews or syncs with the server. Is it possible to generate some kind of unique license key for each download? And at the same time, pass on

问题 I am currently developing RPC services for developers to use, but would like to make sure that I can distinguish between another app's debug key and their public key. Is there a way to check another app's key and tell whether it is a debug key and NOT a published app key? The purpose of this is to be able to tell when their app is in development or release status, as I need to be able to tell whether they should be accessing my dev server or my production server. 回答1: By default the

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . How can I program a Serial Number Generator that generates serial numbers for some existing software? 回答1: You don't state any specific requirements but you can use a GUID. Guid mySerialNumber = Guid.NewGuid();

问题 I'm working on an app I'd like to sell some day -- sooner rather than later! I'd like to develop a reasonably simple serial number scheme to protect it. A simple number/letter combination not more than 25-30 alphanumeric characters long (think Microsoft product keys) Does not require the user to enter any personal information (like an email address) as part of the verification I've been thinking about this a (very little) bit, and I think public key cryptography is a good place to start. I

问题 What is the difference between encrypting some data vs signing some data (using RSA)? Does it simply reverse the role of the public-private keys? For example, I want to use my private key to generate messages so only I can possibly be the sender. I want my public key to be used to read the messages and I do not care who reads them. I want to be able to encrypt certain information and use it as a product-key for my software. I only care that I am the only one who can generate these. I would

问题 In my application users can upgrade their product (from trial to full) using a 32 characters serialnumber. To make it as user friendly as possible for my (paying) customers I would like to be able to copy and paste the serial. I want my customers to place the cursor in the first field under license and when the user pastes the 32 chars license I want it to fill all the fields. I don't know where to start so if you can point me in the right direction that would be great. 回答1: In the first

问题 I need to generate and validate product keys and have been thinking about using a public/private key system. I generate our product keys based on a client name (which could be a variable length string) a 6 digit serial number. It would be good if the product key would be of a manageable length (16 characters or so) I need to encrypt them at the base and then distrubute the decryption/validation system. As our system is written in managed code (.NET) we dont want to distribute the encryption