##SecureDatagramSocket
Extension of Java's DatagramSocket with confidentiality and data authentication/integrity support. These functionalities are completely transparent to the user and to the programmer.
###Confidentiality notes
Encryption and decryption are implemented using the AES algorithm, in OFB mode, with a fixed initialization vector.
###Data authentication/integrity notes
Data authentication and data integrity are implemented adding a HMAC to the current datagram. The HMAC is obtained from a SHA-1 hash and a password.
###Key exchange notes
In the proposed implementation (client/server sample) the key is obtained from a Diffie-Hellman key exchange scheme. This method allows a per-session key, but it is vulnerable to MITM attacks. A more secure scheme could be used having two RSA pair.