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

Using Technology as Experience Framework, Write a two to three (2-3) page p...

Write a two to three (2-3) page paper in which you: Explain how the Web user interfaces help donors to make decisions. Relate the emotional thread demonstrated in the case study to

Estimate the average throughput, Question (a) Estimate the average thr...

Question (a) Estimate the average throughput between two hosts given that the RTT for a 100 bytes ICMP request-reply is 1 millisecond and that for a 1500 bytes is 2 millisecon

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

Attacks on wireless network, Q. Attacks on wireless network WSN are vul...

Q. Attacks on wireless network WSN are vulnerable to attacks which compromise the integrity of the WSN nodes by decreasing the nodes' fault tolerance capabilities, data distrib

Classification of networks, Computer networks are defined by four factors w...

Computer networks are defined by four factors which are as given below: 1) NETWORK SIZE: According to the size of networks. 1) Local Area Network ( LAN) 2) Wide Area Ne

Describe how access control is implemented, Question: (a) How can you ...

Question: (a) How can you prevent someone from accessing your computer when you leave your office for some time? (b) What is the difference between a classic login and a w

E-commerce, briefly expslain type of e-commerce

briefly expslain type of e-commerce

What is border gateway protocol, Border Gateway Protocol It is a proto...

Border Gateway Protocol It is a protocol needed to advertise the set of networks that can be achieved within an autonomous machine. BGP activates this information to be shared

Fragmentation and path mtu, FRAGMENTATION AND PATH MTU IPv6 source is ...

FRAGMENTATION AND PATH MTU IPv6 source is responsible for fragmentation. Routers simply drop datagrams bigger than network MTU. So source have to fragment datagram to arrive d

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