What is a secure communication and why do we need it? What are the security requirements for transmitting information?

1. Secure
Communication

2. What is a secure
Communication?
O It is when two parties need to
communicate and don’t want the third
party to listen to it.

3. Why do we need secure
communication?
O Advances in technology has made our life
easier
O The possibilities and opportunities are
limitless.
O But the risks and chances of malicious
intrusions has also increased.

4. Security requirements for
transmitting information
O Confidentiality – protect the information
from eavesdropping.
O Integrity – protect the information from
tampering.
O Authentication – validate the identity of
another party.
O Non-repudiation - the sender can not deny
having sent a given message.

5. How can the security be
implemented?
O Hiding the content or nature of a message
O Encryption
O Steganography
O Hiding the parties i.e. preventing identification
of parties that are communicating
O Crowds
O Using anonymous communication devices
O Using anonymous proxies
O Using hard to trace routing methods

6. Continued…
O Hiding the fact that communication has
taken place
O Creating random flow of information
O Security by obscurity

7. Communication Security
O It is the discipline of preventing
unauthorized interceptors from accessing
telecommunications in an intelligible form.
O Variants –
O Cryptographic security
O Transmission security
O Emissions security
O Physical security

8. References
O www.wikipedia.com
O www.dreamstime.com

9. THANK
YOU!