Welcome to the lecture devoted to cryptology this time we exam the operating principle of the public
key infrastructure.
This is the best mechanism that computerise society has managed to develop.
It allows us to implement the principle of trust but control
in this module will discuss the purpose and content of certificates which are compatible with the x
5 or 9 standard.
We will consider what role certificates play.
In other words why they should be issued.
We'll talk about why certification authorities help build a relationship of trust will say a few words
about two models for building relationships of trust.
Will show in particular why certificates shouldn't be trusted too quickly especially certificates of
other certification authorities.
We'll consider how to plan your own certification authority structure will express what benefits we'll
have from issuing certificates ourselves to users of our computer system.
Instead of buying individual certificates
we'll say a few words about the configuration and installation techniques of the root certification
authority in the Microsoft Windows environment will consider among other things why this authority should
be an offline authority and what this means
will learn how to install an additional subordinate's certification authority and what obligations are
related to the management of certification authorities and the certificates issued by these authorities.
We'll tell you why this separation is important in the end will devote a few minutes to subjects connected
with archiving private user keys.
We'll tell you when this makes sense and what risk to the security of the system or connected with it.
Well summarize by stating the practical applications of using public key infrastructures.
Let's get started.