Enigma.LicenseManager 1.0.0

Enigma.LicenseManager

Enigma.LicenseManager is a comprehensive .NET library designed for secure license management in applications. It provides robust cryptographic protection using both traditional RSA and modern ML-DSA (FIPS 204) digital signature algorithms, ensuring your software licensing is both secure and future-proof.

✨ Features

• Dual Cryptographic Support: Choose between RSA and ML-DSA (post-quantum) signatures
• Flexible License Management: Create, validate, and manage licenses with customizable properties
• Cross-Platform Compatibility: Supports .NET Standard 2.0, 2.1, and .NET 9.0
• JSON Serialization: Easy license storage and distribution in JSON format
• Product Version Matching: Support for wildcard patterns in product IDs
• Expiration Handling: Built-in support for time-based license expiration

📝 License Creation

Create an RSA-Signed License

Generate a license with RSA digital signature for traditional cryptographic security:

await using var privateKeyFile = new FileStream("<YourKeyFile.pem>", FileMode.Open, FileAccess.Read);
var privateKey = PemUtils.LoadPrivateKey(privateKeyFile, "<KeyPassword>");

var license = new LicenseBuilder()
    .SetProductId("MyApp 1.*")
    .SetExpirationDate(DateTime.UtcNow.AddDays(1))
    .SignWithRsa(privateKey)
    .Build();

Create an ML-DSA-Signed License

Generate a license with ML-DSA (post-quantum) signature for enhanced future security:

await using var privateKeyFile = new FileStream("<YourKeyFile.pem>", FileMode.Open, FileAccess.Read);
var privateKey = PemUtils.LoadPrivateKey(privateKeyFile, "<KeyPassword>");

var license = new LicenseBuilder()
    .SetProductId("MyApp")
    .SignWithMlDsa(privateKey)
    .Build();

💾 License Persistence

Save License to JSON

Export your generated license to a JSON file for distribution:

await using var fs = new FileStream("<DestinationPath>", FileMode.Create, FileAccess.Write);
await license.SaveAsync(fs);

Load License from JSON

Import a license from a JSON file for validation:

await using var fs = new FileStream("<LicenseFilePath>", FileMode.Open, FileAccess.Read);
var license = await License.LoadAsync(fs);

✅ License Validation

Verify License Authenticity

Validate a license against its public key to ensure authenticity and integrity:

await using var publicKeyFile = new FileStream("<YourKeyFile.pem>", FileMode.Open, FileAccess.Read);
var publicKey = PemUtils.LoadKey(publicKeyFile);

var service = new LicenseService();
var (isValid, _) = service.IsValid(license, publicKey, "MyApp");