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)

Typical network management system, Problem 1: List measurable entities ...

Problem 1: List measurable entities on which the quality of service in a data communication network depends Problem 2: Show the features of a typical Network Management

Parsing ipv6 headers, PARSING IPv6 HEADERS Base header is fixed in siz...

PARSING IPv6 HEADERS Base header is fixed in size i.e. 40 octets. NEXT HEADER field in the base header describe kind of header and it seems at end of fixed-size base header. S

Project, Network diagram for a mediacal care

Network diagram for a mediacal care

Hybrid cryptography systems-cryptography, Hybrid Cryptography Systems Th...

Hybrid Cryptography Systems This makes use of different cryptography systems. Except digital certificates, pure asymmetric key encryption is not used extensively. Asymmetric enc

Systems development life cycle security-information security, The Role of t...

The Role of the Investigation The first phase, investigation is the most significant. What problem is the system being developed to solve? During investigation phase, objectives

Half-duplex and full-duplex mode of transmission, Question: a. State br...

Question: a. State briefly three reasons why computer networks are used? b. Differentiate between simplex, half-duplex and full-duplex mode of transmission. c. State any

Explain the close procurement project process, Question 1: Why do we ne...

Question 1: Why do we need a Law of Contract? a Explanation Reasons to have a law of contract b Explain the close procurement project process - Explanation (causes,

Media, what is guided media or unguided media

what is guided media or unguided media

[email protected], Re: Website Google Ranking Hello! Hope yo...

Re: Website Google Ranking Hello! Hope you are doing well. I discovered some major issues in your website which might be the cause for the Google Penalties and poor search ranki

Calculate euler totient function value, (a) Explain the importance of the ...

(a) Explain the importance of the Euler Totient function in Cryptography. Calculate Euler Totient function value, φ(1280). (b) Explain the role of the Authentication Server (

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