SuncodeSoftware.SuperSDK.License 1.2.1

SuperSDK.License

License verification library for SuperSDK applications using Ed25519 digital signature.

Features

• Ed25519 Signature Verification: Cryptographically secure license validation using NSec.Cryptography
• Hardware Fingerprinting: Machine binding based on CPU ID and Baseboard Serial Number
• Encrypted MCI Files: Secure machine information storage with AES encryption
• Cross-Platform Support: Windows (via WMI), Linux, and macOS
• Code Obfuscation: Protected against reverse engineering

Usage

Basic License Validation

using SuperSDK.License;

// Validate license file (default: SuperSDK.lic in application directory)
if (!LicenseManager.ValidateLicense())
{
    Console.WriteLine("License validation failed!");
    return;
}

Console.WriteLine("License is valid!");

Get License Information

var info = LicenseManager.GetLicenseInfo();
if (info != null)
{
    Console.WriteLine($"Customer: {info.Customer}");
    Console.WriteLine($"Type: {info.Type}");
    Console.WriteLine($"Expiration: {info.ExpirationDate:yyyy-MM-dd}");
    Console.WriteLine($"Perpetual: {info.IsPerpetual}");
}

Generate Machine Information File

// Generate encrypted MCI file for license request
string mciPath = HardwareSignature.GenerateMciFile();
Console.WriteLine($"Machine info file created: {mciPath}");

// Get machine ID for license binding
string machineId = HardwareSignature.GetMachineId();
Console.WriteLine($"Machine ID: {machineId}");

License File Format

License files use XML format with Ed25519 digital signature:

<?xml version="1.0" encoding="utf-8"?>
<License>
  <Customer>
    <Name>Company Name</Name>
    <Email>contact@company.com</Email>
  </Customer>
  <Type>Enterprise</Type>
  <Features>
    <Feature name="MachineId">abc123...</Feature>
    <Feature name="Perpetual">true</Feature>
    <Feature name="EffectiveDate">2025-01-01 00:00:00</Feature>
  </Features>
  <Attributes>
    <Attribute name="Expiration">2026-12-31</Attribute>
  </Attributes>
  <Signature>base64-encoded-ed25519-signature</Signature>
</License>

Security

• Ed25519 Algorithm: 256-bit public key cryptography
• Code Obfuscation: ConfuserEx protection on release builds
• Machine Binding: Optional hardware-based license enforcement
• AES Encryption: Secure MCI file storage with SHA256-hashed key

Dependencies

• .NET 9.0+
• NSec.Cryptography 24.8.0+
• System.Management (Windows only)

License

This package is part of SuperSDK and is licensed under the MIT License.

Copyright © 2025 SuncodeSoftware