Hi, We're using XML Digital Signatures for signing and verifying our license keys. The signing works fine and has been running smoothly. The XML license file contains a few (plaintext) details about the license, along with a binary signature. We'd like to encode (I don't say encrypt) those plaintext details (license duration, user name...
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 enc...
I need some tips on how to authenticate licenses (user / license key ) . Is it better to do what many games do, which is validating the cd key from company servers. Is there a guide on how to implement this without becoming "cracked" or "patched" ? OR is it better to just validate user / license key within the software ? Would you not ...
I'm not exactly sure what I'm looking for but basically I have a PHP app that customers use on their own server. In it it does a 'call home' command to check if the license key they are using is valid before allowing them to use it. I currently make it connect to my primary server which is very fast, but it is hosted in the US and if...
Hi, I have written a POS application, and now i want to create different versions of it. Something like a basic version, a premium version and a Full version. So if a client pays more they get more features in the same application. Is it possible that i could keep one standard application but features in my application get enabled / dis...
I'm retrieving Windows XP license key with this function but it does not work for Vista and Seven. How can I get the license key at both of these Windows versions? Public Function sGetXPKey() As String Dim result As String = String.Empty Dim RegKey As RegistryKey = _ Registry.LocalMachine.OpenSubKey("Software\Microsoft\Wind...
Tools: InstallShield 2009 Premier, Basic MSI Project What I Need: Option to enter License Key (setup key) during setup [I can use TrialWare, but it allows the user to install the product] and also option to setup evaluation version during install. So how to provide license key check during setup? ...
Hi, this is my first question so please be gentle... I am working on a software which I would like to protect using some kind of licensing scheme. A basic scheme would be to generate some "unique" key for a user. The user sends this key and a registration code when he wants to register the software and receives an activation code. Whe...
Hello, A programmer has created a Microsoft Office Add-In (PC) for me. We would now like to implement online activation of the add-in. Is anyone aware of an open source solution to handle serial number validation via online activation? Many thanks for any insight anyone can offer. ...
I am looking for some kind of licensing solution for a .net application such that we can gen a license key during e-commerce checkout, or something a support person can generate and email to a customer. I'd like to have admin type capabilities, tracking key generations, adding products, features etc... I did a quick Google search and a...
I'm sure this is fairly basic, but I don't know quite what to search on to get a concise tutorial. I want to create an app and make it downloadable on the Android Market for free. Then, I want to create one or more apps which are just license keys which open up certain functionality on the free app. What's the best way for the free ap...
Any recommendations for an open source (free) C# library/application for a C# Windows Application that could be used for: (a) creating license/product keys and (b) has library that can be used within the code to perform a check to see whether the entered license key is valid? (I've seen other posts which cover commercial products, but h...
In the GetLicense method of a LicenseProvider, there is a context that can be examined for a UsageMode. This is either DesignTime or RunTime. I assumed that this would behave exactly like a control's DesignMode property but it doesn't appear to. I've implemented my own LicenseProvider and, as a test, I display the UsageMode everytime t...
Are there any good ways to limit the number of times an application can start or limit how long it can be used for under Windows 7 and using C#? As far as I can see the registry can be easily edited, there are programs to report any kind of file access, virtual machines can be used to change the system time back to when the application ...
I ve downloaded qt 4.5.0 evaluation but during installation it asks for a license key but i don't have a one so please help me out. Is there any way by which I can download a free GPL or LGPL license key for qt 4.5.0 or i would have to download the full qt SDK for windows???? I know it's a noobish question but i ll be really thankful to ...