Define checksum, Computer Network Security

Assignment Help:

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


Related Discussions:- Define checksum

How Ethical are Major Internet Companies?, Ask question #MHow Ethical are M...

Ask question #MHow Ethical are Major Internet Companies?

Placeholders for the plaintext characters, Encode the following plaintext, ...

Encode the following plaintext, using the Caesar cipher:             LORD OF THE RINGS b) The following ciphertext              jw njbh lxmn cx kanjt has been encoded usi

Understanding a business model of a spammer, The first and foremost need of...

The first and foremost need of  any business is a role to perform for its client base, and for the spammer this will typically be the role of advertising products which, due to the

Explain how the key exchange algorithm works, Question: (a) Explain how...

Question: (a) Explain how the Diffie-Hellman key establishment protocol works. (b) Prove that the Diffie-Hellman key establishment protocol is vulnerable to a `man in the mi

Determine the codeword which is transmitted using crc, Question (a) For...

Question (a) For the bit stream 010011, show the waveforms for each of the code indicated. Consider that the signal level for NRZ-L for mark is positive; the signal level for t

For providing the security, There are various benefits related with providi...

There are various benefits related with providing the security. They are given below,  (i)  Confidentiality/ Privacy (ii)  Integrity  (iii) Availability (iv)Authenticatio

Cryptographic hash functions, (a) (i) Bob has public RSA key (n = 77, e...

(a) (i) Bob has public RSA key (n = 77, e = 7). Show that Bob's private key is (d = 43). (ii) Alice wants to send the message m = 13 to Bob. She encrypts the message usi

Explain symmetric and asymmetric encryption system, Question 1: (a) Dif...

Question 1: (a) Differentiate between symmetric and asymmetric encryption system. (b) Describe how a digital signature is created. (c) Explain briefly what SSL (secure so

Security policies, implementing password policy in organisation

implementing password policy in organisation

Log file monitors-information security, LOG FILE MONITORS Log file monit...

LOG FILE MONITORS Log file monitor (LFM) is similar to NIDS. It reviews log files generated by servers, network devices, and even other IDSs for patterns and signatures. Pattern

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