能否在无网络环境中使用Portable.Licensing Library进行离线授权校验？

Absolutely! Portable.Licensing is actually a great fit for offline license validation scenarios—this is one of its core design strengths, making it ideal for applications that need to run without network access.

Here’s a clear breakdown of why and how it works for your use case:

• Local-only validation logic: All license checks run directly within your application, no remote server calls required. When you generate a license, you embed all critical details (like expiration dates, allowed feature sets, machine constraints, etc.) into the license file, then sign it with your private key. Your app only needs the matching public key to verify the license’s authenticity and validate its terms—no internet connection needed at all.
• Simple offline workflow:
  1. Generate the license using Portable.Licensing’s API (you can do this on your own secure machine or internal licensing system, not on the end user’s device).
  2. Send the signed license file (usually saved as a .lic file or custom format) to your user, who places it in a predefined folder accessible by your app.
  3. In your application, load the license file, use the public key to confirm the signature is valid, and check that all license constraints (e.g., not expired, matches the current machine’s hardware fingerprint if you added that) are met.
• Machine binding option: If you want to prevent the license from being copied to unauthorized devices, you can include a hardware fingerprint (like CPU ID, disk serial number, or a combination of unique local identifiers) in the license during generation. Your app can compute the same fingerprint locally and compare it to the one in the license—all done entirely offline.

内容的提问来源于stack exchange，提问作者Amira Mahmoud