Secure Communication Suite

Secure communication is when two entities are communicating and do not want a third party to listen in. In order for this to be the case, entities need to communicate in a way unsusceptible to eavesdropping or interception.

Encryption is considered the main key factor of security to achieve confidentiality and to protect data from disclosure. Encryption is not efficient to achieve integrity. It needs another factor called authentication. Covert channel is created to transfer data indirectly between client and server. Before the client and server use the covert channel, they must agree on a pre-agreement knowledge.