encrypt and decryption using rsa with the prime numbers, Computer Network Security

Assignment Help:

Problem (1)

- Alice, Bob and Charlie have a secret key a=3, b=4, c=5, respectively.

- They want to find a common secret key using Diffie-Hellan key exchange protocol (with g=2, p=5).

- Assume that there is no man-in-the-middle attacker.

-  Show how they can share a common secret key with the above mentioned numbers.  

Problem (2)

- Encrypt and decrypt first 3 characters of your last name (family name) using RSA with the prime numbers (p=7, q=11). (If your last name is shorter than 3 characters, use first 3 characters of your first name instead.)

- Use ASCII code at: ascii.cl

  • e.g.) Michael Nordan
  • A=65, B=66, ...
  • N -> 78, o->111, r->72

- You can choose an encryption key e among {11, 13, 19, 23, 29} and find d.

- You have to show the all the steps (in particular, EEA) as detail as possible.

- Encrypt the message using your encryption key e like this way (n=pq):

If you number is greater than 76, decompose them into a smaller number as follows.

  • e.g., 7 8 11 17 2
  • (7^e) mod n
  • (8^e) mod n
  • (11^e) mod n
  • (17^e) mod n
  • (2^e) mod n

- Decryption the ciphertext using private key d.


Related Discussions:- encrypt and decryption using rsa with the prime numbers

Advantages and disadvantage of packet filtering firewall, Advantages and Di...

Advantages and Disadvantage of Packet Filtering firewall   Advantages One screening router can help protect entire network One key advantage of packet filter

Why use an ids, WHY USE AN IDS? IDS prevent from problem behaviors by in...

WHY USE AN IDS? IDS prevent from problem behaviors by increasing the perceived risk of discovery and punishment. Detect the attacks and other security violations. Detect and at

Explain the main stages in the penetration testing process, Question: (...

Question: (a) i. Explain what is meant by Discretionary Access Control and Mandatory Access Control ii. Which method would be the most effective to ensure that users do

Growth of lan technology, GROWTH OF LAN TECHNOLOGY The production of s...

GROWTH OF LAN TECHNOLOGY The production of shared communication channels (LANs) started in 1960s and early 1970. The basic idea behind was to reduce the number of connectio

Plain-text using play-fair encryption, What is one-time pad for encryp...

What is one-time pad for encryption?  Describe how it offers both Confusion and Diffusion. Using the letter encoding discussed in class (along with one-time

Tracing a route, There is another probing methods i-e Trace Route. To get m...

There is another probing methods i-e Trace Route. To get more detail it is used     As given in the figure about the route to DANDELION-PATCH.MIT.EDU was looked out a

Computer security incident response team, QUESTION 1 Using a real life ...

QUESTION 1 Using a real life scenario or context list and set the scene for at least four advantages that an organized incident response program promotes. QUESTION 2 Yo

Lan topologies, Network can be distinguished by shape. According to which t...

Network can be distinguished by shape. According to which there are three most popular methodologies, which are shown as follows; Star Ring Bus

A small isp requests your help, QUESTION A small ISP requests your help...

QUESTION A small ISP requests your help. The technicians report that they have had no downstream access to the Internet. They believe the problem lies with their access provide

What are the ethical issues and implications, An injunction to 'think ethic...

An injunction to 'think ethically' about a situation is not helpful. Perhaps if one has a background in moral philosophy this would work, but usually both students and IT professio

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