The explosive growth in computer systems and their interconnections via networks has
increased the dependence of both organizations and individuals on the information stored
and exchanged using these systems. This in turn has led to an increased awareness of the
need to protect data and resources from disclosure, to guarantee the authenticity of data
and messages, and to protect systems from network-based attacks.
It is commonly accepted, that our networks are somehow insecure. Security is something
like the property of being free from evil. A common opinion is that security can only be
gained at the cost of freedom. This has consequences on the communicational behaviour.
However, it is not our aim to turn open systems into closed system, but rather to gain
both, an open and secure communication network. We investigate some security features,
like encryption, access control, public key certification, authentication, non-repudiation
and signature functions in order to provide not just security services but to add also new
functionality directly into the hand of the users. The effect of security services will be
twofold: to keep evil away and to have a richer functionality than before.
described in more detail in other pages, involve a deep study of disciplines such as
cryptography, network and internetwork security, computer security.