License Checker and Generator

Functionality

• Generate a license signed by a private key.
• Check the license based on the public key.

Design

Use two Private keys (K1, K2) for licensing as follows.

• Use K1's private key to encrypt the license information.
• Use K2's private key to sign that information.
• Bundle both K1's private key and K2's public key with the application.
• When decrypting K1's private key will be used, and then signature will be checked using the public key of K2.