Encryption scheme: Algorithm

I will use the word algorithm in the future to define:

A scheme that contain mathematics formula or generator and that is use for encrypted communication.

Example: 1000110. 10 will change for 11. This is for client number one. A generator or a formula will generate other possible change that will be use for other clients. One client should have a lot of change.

This way, if the client or the server has not been hacked, the communication appear to be secure. The reloadable key system is more secure because if the client is hacked it need to be rehack all the time the key get reloaded.