3. Encrypting and transmitting a message There are two kinds of threads, e have to create a barrier that makes each thread wait until one retrieval thread and two encryption threads are present. Whe method encrypt_transmit(). You must guarantee that all the threads from one transmission must invoke the encrypt_transmit method before any of the threads from the next triple set of threads do. In other words, a group of three threads must meet at the barrier before the encryption and transmission can be invoked. You may use either pseudo code, Java or C++. Just be sure to clearly comment your solution. ncryption and retrieval. To encrypt a message and transmit it, we