Java License Key Generator Example

  
  1. License Key Generator Online
  2. Java Code Generator
  3. Java Get Key

This class provides the functionality of a secret (symmetric) key generator. Key generators are constructed using one of the getInstance class methods of this class. KeyGenerator objects are reusable, i.e., after a key has been generated, the same KeyGenerator object can be re-used to generate further keys. There are multiple techniques to develop key based software activation. Mostly, you can classify them into offline and online approaches. Offline activation is simple to implement. True License is both a Java license key generator and a license key validator, meaning that you can use it on your server to create license keys, and then use it again in your Java application (presumably a Java GUI application) to install and verify the license that you generate. The Java Keytool is a command line tool which can generate public key / private key pairs and store them in a Java KeyStore.The Keytool executable is distributed with the Java SDK (or JRE), so if you have an SDK installed you will also have the Keytool executable. Java Software Licensing. To add license checking to a Java application you import the com.nuvovis.licensing. License class which wraps the Licensing Library and put the library in your execution path. You can then call the checkLicense method to load the license information and check that the user has a valid license. May 11, 2018  License4J comes with License Manager GUI application to generate and store software license files and cryptographically secure serial numbers. License4J Auto License Generation and Activation Server is a web application which handles license generation, auto activation, manual activation, deactivation, online key validation and blacklist check.

This class provides the functionality of a secret (symmetric) key generator.

Key generators are constructed using one of the getInstance class methods of this class.

License Key Generator Online

Just a quick note that if you happen to be looking for a license key generator (or 'license key manager') for a Java desktop (Swing) application, I've been taking a look at the TrueLicense library on java.net, and although it is several years old now, it seems to work well, and the author certainly put a lot of time and thought into it.

KeyGenerator objects are reusable, i.e., after a key has been generated, the same KeyGenerator object can be re-used to generate further keys.

There are two ways to generate a key: in an algorithm-independent manner, and in an algorithm-specific manner. The only difference between the two is the initialization of the object:

  • Algorithm-Independent Initialization

    All key generators share the concepts of a keysize and a source of randomness. There is an init method in this KeyGenerator class that takes these two universally shared types of arguments. There is also one that takes just a keysize argument, and uses the SecureRandom implementation of the highest-priority installed provider as the source of randomness (or a system-provided source of randomness if none of the installed providers supply a SecureRandom implementation), and one that takes just a source of randomness.

    Since no other parameters are specified when you call the above algorithm-independent init methods, it is up to the provider what to do about the algorithm-specific parameters (if any) to be associated with each of the keys.

  • Algorithm-Specific Initialization

    For situations where a set of algorithm-specific parameters already exists, there are two init methods that have an AlgorithmParameterSpec argument. One also has a SecureRandom argument, while the other uses the SecureRandom implementation of the highest-priority installed provider as the source of randomness (or a system-provided source of randomness if none of the installed providers supply a SecureRandom implementation).

In case the client does not explicitly initialize the KeyGenerator (via a call to an init method), each provider must supply (and document) a default initialization.

Every implementation of the Java platform is required to support the following standard KeyGenerator algorithms with the keysizes in parentheses:

  • AES (128)
  • DES (56)
  • DESede (168)
  • HmacSHA1
  • HmacSHA256
These algorithms are described in the KeyGenerator section of the Java Cryptography Architecture Standard Algorithm Name Documentation. Consult the release documentation for your implementation to see if any other algorithms are supported.

Professional software registration tool

Serial Key Generator is application created for software developers who want to protect their applications by serial key registration. Just in a few clicks you are able to generate serial keys for your C# .NET, Visual Basic .NET, Delphi, C++ Builder and Java applications. INNO and NSIS scripts are also supported. It's easy to use, fast and with the lowest price on the market! All this makes Serial Key Generator the No.1 authoring tool for thousands of developers around the world. Try it!



What's new & improved in v7.0?

  • Support for INNO and NSIS setup procedures!
  • Source code generator and example projects for INNO and NSIS.
  • Updated help and documentation, new demonstration videos.
  • Improved application performanse.
  • Note: Registered users can register v7.0 (32 & 64 bit) using the same serial key as for the previous version.

Features

  • Generate serial keys using custom number of columns and characters per column.
  • Serial keys can contain uppercase and/or lowercase charactes and/or numbers.
  • Generate up to 2 million serial keys in one turn (1 million with 32 bit version of SKG).
  • Export serial keys to CSV, TXT documents.
  • Import serial keys from CSV, TXT documents.
  • Export serial keys to MySQL and MS SQL databases (SQL Query generator).
  • Export serial keys to encrypted registration files (SHA-512).
  • Update encrypted registration files (add new serial keys, delete or validate existing serial keys).
  • Source code generator for encrypted registration files supporting C#.NET, Visual Basic .NET, C++ Builder, Delphi and Java applications. INNO and NSIS scripts are also supported.
  • Source code generator for MS SQL online validation supporting C#, Visual Basic .NET, Delphi, C++ Builder and Java. INNO and NSIS scripts are also supported.
  • TRegistrationFile and TMSSQLRegistration components for Delphi & C++ Builder.
  • Validate, add and delete serial keys from MS SQL server. Documentation and example projects for VB .NET, C# .NET, C++ Builder, Delphi and Java.
  • Lifetime free upgrades!

Timm Bremus provided us with Serial Key Generator Converter tool that can be used to convert encrypted registration files into a .NET Core compatible format. Thanks Timm!
https://github.com/bremussolutions/SerialKeyGeneratorConverter

Please note: Our Serial Key Generator is a developer tool that helps developers to generate and integrate serial keys into their own software. It is not intended to generate illegal serial keys for other software like MS Windows, MS Office etc...

Video demonstration

Serial Key Generator demonstration for .NET applications

Contact

Java Get Key

Generator
  • To contact us about any questions regarding our products please use: contact@vclexamples.com
  • For existing costumers we also provide support using: support@vclexamples.com