Hi. In my class we are designing software for Secure Chat application (it is not web basedapplication).
The assignment has 5 parts.- part 1 has been already done – answers provided- part 2 has been already done – answers provided- part 3 – need for this week- part 4 – can be done in the next week- part 5 – can be done later on
For this week I need part 3 to be done. The next parts, 4 and 5, can be done in next week.
The attached document provide allguidance, questions and answers. Questions for part 3 (in document page 11):

Secure
Chat – Exercise Three

This assignment begins the process of detailed
design work. For both the client and the server, produce class diagrams for the
classes required for the program. You may abstract the GUI and database layers
as a single class or block with no further details, but other classes should
include methods, properties, and their access specifiers. You may find that it
makes the diagrams easier to understand if you leave the return type and
parameters of each method to the English description of the diagrams. For each
diagram, include a English description of the diagram, including notes about
the role, function, important internal state and public interface for each
class.

For both the client and the server choose some
interesting or important runtime configuration and describe it using object
diagrams. Include at least three objects in each diagram and preferably more.
Provide an English explanation for each diagram.

Your work should be prepared according to
theDesign Guidelinesfor
the class. This assignment is worth 10% of the overall grade, and will be
scored as follows:

·UML class diagram for
client.

·Description of UML
classes for client.

·UML class diagram for
server.

·Description of UML
classes for server.

·UML object diagram for
client.

·Description of UML object
diagram for client.

·UML object diagram for
server.

·Description of UML object
diagram for server.

·Correctness and
Consistency.

·Organization.