Mix and encrypt algorithm

Core idea of the system is using users in database to create mixing notes for messages between user A and user B. Messages sent from A to B will be divided into parts and encrypted by multiple layers of encryptions. Each layer of encryption will be executed by a mixer (an user of the system) in order to hide the real data until it reaches the recipient (B). The recipient (B) will be the only one who own the key to decrypt layers of encryptions and restore the original data, that means even when the data got stolen or hijacked during the process, hackers wont be able to decrypt since only B own the decryption key.