Cyclic redundancy check (crc), Computer Network Security

Assignment Help:

CYCLIC REDUNDANCY CHECK (CRC)

To activate a network system to check move error without increasing the amount of information in every packet another most successful method is made which is named CRC.

To understand the functions of CRC consider data in a packet as co-efficient of a polynomial. Their co-efficient set is divided by a given polynomial. The remainder of this division is then transferred as checked and CRC at the receiver to check errors. CRC has good error detection properties. It is easy to understand in hardware.

HARDWARE COMPONENTS USED IN CRC:

CRC needs just two hardware elements:

  • Shift register
  • Exclusive OR ( XOR unit )

The XOR unit is given in the figure below.

 

1913_CRC.png

 

Shift register is also given in figure. It operates two operations.

  • Initialize: puts all bits to zero
  • Shift: replaced all bits to the left position.

 

 

1331_CYCLIC REDUNDANCY CHECK.png


Related Discussions:- Cyclic redundancy check (crc)

Analysis phase in the building-block approach, QUESTION: a) Explain fou...

QUESTION: a) Explain four issues that are generally addressed in the Needs Analysis phase in the building-block approach to network design. b) Sketch a typical hybrid star-b

What is information-information security, What is information Informatio...

What is information Information comprises the meanings and interpretations which people place upon the facts, or data. The value of information springs from the ways it can be i

Describe the terms prime number and prime factorisation, (a) An opponent is...

(a) An opponent is using RSA with the public key {e=53, n=77}. You intercept the ciphertext C=10. (All values on this problem, including the ciphertext and the cleartext, are nume

Introduction to network protocol, In this assignment, you are required to e...

In this assignment, you are required to emulate the operation of a link layer and network layer protocols in a small computer network. Your program should behave like a single node

Semester 2, Do you have assignment solutions for CCE UPES MBA for oil and g...

Do you have assignment solutions for CCE UPES MBA for oil and gas semester 2

Introduction to cryptography, INTRODUCTION TO CRYPTOGRAPHY Cryptography...

INTRODUCTION TO CRYPTOGRAPHY Cryptography The word cryptography is derived from Greek words kryptos, which means hidden and graphein, meaning to write, this is the process of

Describe des encryption, (a) Describe DES encryption with a block diagram a...

(a) Describe DES encryption with a block diagram and brief steps. (b) How does triple DES improve security. What is the effective key length of triple DES? How can 3DES be compa

Guided media, Guided Media These are those that give a conduit from on...

Guided Media These are those that give a conduit from one machine to another that add twisted-pair, fiber-optic cable and coaxial cable. A signal traveling along any of these

Find the capacity of the wcdma, Question: (a) Describe the term interfe...

Question: (a) Describe the term interference in the space, time, frequency, and code domain. (b) Consider a 1 G - AMPS: 824-849 MHz (forward) ; 869-894 MHz (reverse). B

Secure clustering in WSNs, i have an idea of clustering in wsns . where eac...

i have an idea of clustering in wsns . where each and every sensor node use the reputation scheme and while clustering provide help against the selfishness atatck of the sensor nod

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