Plain-text using play-fair encryption, Computer Network Security

Assignment Help:

What is one-time pad for encryption?
1. Describe how it offers both Confusion and Diffusion.
2. Using the letter encoding discussed in class (along with one-time pad), the cipher text, KITLKE was generated using one-time pad. What is the one time pad used if the plain text is "thrill"? What's the key if the plain text was "tiller"?
Encrypt the following plain-text using play-fair encryption scheme. Use WEDNESDAY as the key. Plain Text: "I DREAM OF RAIN"
Suppose that you have a message consisting of 1024 bits. Design method that will extend the key that is 64 bits long into a string of 1024 bits. Encryption is performed by XORing the data bits with the extended key bits. Discuss the security of this approach.

Related Discussions:- Plain-text using play-fair encryption

Udp encapsulation, UDP ENCAPSULATION As given in the figure below, UDP...

UDP ENCAPSULATION As given in the figure below, UDP packet is included in IP datagram and the IP datagram is then attached in the Frame.

TCP/ ip, Q1 (15 marks, 5 marks each part): This question has three parts: ...

Q1 (15 marks, 5 marks each part): This question has three parts: In a short paragraph (200-300 words) explain the fundamentals of Packet Switching and how it works. In a short pa

Issue specific security policy, Why an organization need the issue specific...

Why an organization need the issue specific security policy

Derive the transmitted crc header checksum, QUESTION (a) Consider the f...

QUESTION (a) Consider the following digital bit stream 01001100 is to be encoded in: i. NRZ-I ii. Pseudoternary iii. Manchester iv. Differential Manchester Show th

Develop a completely secure wsn based on the triple key, Q. Develop a compl...

Q. Develop a completely secure WSN based on the triple key? Wireless network is the most vulnerable type of network to security attack. Unauthorized access to wireless network

Reason for multiple topologies, REASON FOR MULTIPLE TOPOLOGIES Every t...

REASON FOR MULTIPLE TOPOLOGIES Every topology has disadvantages and advantages, which are described below: IN A RING: It is simple to coordinate access to other dev

Draw a suitable physical network diagram, Question a) From the capture ...

Question a) From the capture below: Give the datagram source IP address, upper layer protocol, Total length in decimal and header checksum in hexadecimal; the segment source po

Address resolution with closed-form computation, ADDRESS RESOLUTION WITH CL...

ADDRESS RESOLUTION WITH CLOSED-FORM COMPUTATION For networks use reliable addressing, it is possible to select an address that creates closed-form address resolution possible.

Ring topology, RING TOPOLOGY In this topology of network the devices a...

RING TOPOLOGY In this topology of network the devices are connected to each other in packed loop. In this network first computer passes data packet to the second and then seco

Transmision imparment, What are Transmission Impairments? Explain the follo...

What are Transmission Impairments? Explain the following concepts with respect to Transmission Impairments a) Attenuation b) Delay Distortion c) Noise ion #Minimum 100 words ac

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages