Define checksum, Computer Network Security

The method used to check errors is checksum. In this method data is treated as a sequence of integers and their arithmetic sum is calculated and the carry bits are added to the final sum. Then checksum is calculated by transmission then it is sent along the data and the receiver and the same camputation is done and then compared with the original checksum transferred. In this way errors are checked if the received checksum is different from the sender.

The figure explained the example.

704_CheckSum.png

The integers may be 8,32 or 16 bits. Checksum is easy to check. It needs only addition but it has also limitations and can not check all errors. As given below.

 

 

1542_CheckSum.png

Posted Date: 7/30/2012 5:47:07 AM | Location : United States







Related Discussions:- Define checksum, Assignment Help, Ask Question on Define checksum, Get Answer, Expert's Help, Define checksum Discussions

Write discussion on Define checksum
Your posts are moderated
Related Questions

Categories of Controls Controlling risk through mitigation, avoidance or transference is accomplished by implementing controls. There are 4 effective approaches to select the co

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

QUESTION (a) Illustrate the term file carving. (b) What are the basic three main techniques for image steganography? (c) Distinguish between vector graphics and raster

(a) Using the extended Euclidean algorithm, find the multiplicative inverse of 504 mod 67. (b) Decrypt the following ciphertext, which has been encrypted using Caesar cipher:

how to form the trojan integrated cirucit and what are the tools are used to simulate the ciruit to our system and how to pass it as input to the clustering algorithm to get the ou

Maximum Transmission Unit  (MTU) Each hardware method specification adds the definition of the maximum size of the frame data area, which is known the Maximum Transmission Uni

Describe the process a proposed standard goes through to become an RFC

WFABilling project in Java:  Project Title: WFABilling   Role                      : Developer Domain                 : Tele-Com Environment          : Java, J2EE, S

CarALouer provides rental of cars to its customer on a regional basis i.e. a car is attached to a regional home-base which also houses a regional office of the company. Each regi