This java application imitates a message exchange between two parties using Diffie-Hellman Key Exchange and AES-128 Encryption with CBC mode of operation.

1. Run MessageExchanger.java
2. Provide a prime number and generator value for Diffie-Hellman Key Exchange algorithm. (11 and 2, for example)
3. You will see some information regarding the key exchange process.
4. Type a message and press enter to send.
5. You will see the original message (plaintext), ciphertext, and decrypted message followed by the initial vector that was used for the CBC mode of encryption.

The initial vector is generated randomly and changes every time the program starts.

NOTE: It is assumed that p and alpha are not big. Using big values will cause the Math.pow() function used in DHKeyExchanger to behave unexpectedly and will result in an unsuccessful key exchange. This problem can be solved using BigInteger class. However, since the assignment description states that the values should be kept low, we decided not to bother moving from primitive types to BigInteger.