Security impact of not having a public key infrastructure, Computer Networking

Assignment Help:

(a) You are provided with the following:

A. An RSA facility complete with public/private key pair
B. A CBC (cipher block chaining) facility incorporating the IDEA block cipher
C. A message digest facility employing the MD5 algorithm

(i) You are required to send a block of data of size 1 MByte through an insecure network to a recipient who knows the message digest algorithm you are using, your secret key in IDEA and your RSA public key. Explain how you would use your security facilities (each facility for one operation) to provide the security services of privacy, message integrity and source authentication.

(ii) How would you achieve the above if the RSA facility were not available?

(iii) Discuss the relative security strengths of your solutions to (i) and (ii)

(b) (i) Name five functions that should be provided by a public key infrastructure.

(ii) Is it possible to operate a public key security system without a public key infrastructure? Justify your answer.

(iii) Discuss the security impact of not having a public key infrastructure.


Related Discussions:- Security impact of not having a public key infrastructure

What is bipolar encoding, Q. What is Bipolar Encoding? - Uses three vol...

Q. What is Bipolar Encoding? - Uses three voltage levels negative, positive and zero - Zero level represents binary 0; 1s are represented with alternating positive and negat

What are the drawbacks of ethernet cabling, What are the drawbacks of Ether...

What are the drawbacks of Ethernet Cabling? The Ethernet cabling ahs the following drawbacks: 1. Ethernet is not a high-level performer in high-load environments. This proto

Explain logical ring physical star topology, Explain Logical Ring Physical ...

Explain Logical Ring Physical Star topology for Token-Passing Standard. It is definite that any break in the ring at any point will interrupt communications for all machines.

Http request message, HTTP Request Message The first  line of  an HTTP...

HTTP Request Message The first  line of  an HTTP request message  is called the  line. The subsequent lines are called  the header lines. The  request  line has  fields the me

State about the packet filter firewalls, State about the Packet filter fire...

State about the Packet filter firewalls They remain the most common type of firewall in use as of today. They were the earliest firewalls developed and were capable of permitt

What are the disadvantages of bus topology, What are the disadvantages of b...

What are the disadvantages of bus topology? The disadvantages of bus topology are: a. The bus networks are dissimilar to reconfigure, especially when the acceptable number o

Explain clustering support, Explain clustering support Clustering suppo...

Explain clustering support Clustering support refers to the ability of a network operating system to link multiple servers in a fault-tolerant group. The main purpose of this i

Topology, bus topology disadvantage?

bus topology disadvantage?

Write the concept of simplex, Describe Concept of Simplex, Half Duplex and ...

Describe Concept of Simplex, Half Duplex and Full Duplex dialogs?

Explain the OSI Model Facts, OSI Model Facts The OSI model classifies a...

OSI Model Facts The OSI model classifies and organizes the methods that hosts perform to maintain data for transport across the network. You should be familiar with the OSI m

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd