 allows applications to securely communicate with each other across a network such that the confidentiality of the information exchanged is protected (i.e. it prevents eavesdroppers from listening in to the communication). Additionally it protects the integrity of the information exchanged to prevent an attacker from changing it. Finally it provides authentication so that one or both parties can be sure that they are talking to who they think they are talking to and not some imposter.</p>

<p>Sometimes TLS 