Create a licensing system?

Question

Java

The task is this: we need to make a license generator, into which we enter some information with permissions for our software, which is encrypted into a key. Next, the key is transferred to a remote piece of hardware on which our software runs, the software recognizes this key and becomes operational. I read about asymmetric encryption with a public key, but I found very few implementation examples in java, basically they were all tied to the RSA algorithm. A colleague suggested that the RSA algorithm would not work for this case, because. With the private key, you can both encrypt and decrypt the message.

Answer 1

The answer is that your colleague knows nothing about rsa. You can totally use it. Because you have a license check a one-time operation, use longer keys.