Explain the bit-level encryption, Computer Networking

Assignment Help:

Q. Explain the Bit-Level Encryption?

Bit-Level Encryption

- Data is divided into blocks of bits then altered by encoding/decoding, permutation, substitution, exclusive OR, rotation, and so on

- Encoding/decoding - decoder changes an input of n bits into an output of 2n bits; encoder has 2n outputs and only n outputs

551_Explain the Bit-Level Encryption.png

- Permutation - transposition at the bit level

- Straight permutation - number of bits in input and output are preserved

- Compressed permutation - number of bits is reduced

- Expanded permutation - number of bits is increased

- May be implemented in hardware circuitry to be performed very quickly (referred to as P-boxes)


Related Discussions:- Explain the bit-level encryption

What is protocol data unit, What is Protocol Data Unit? The data unit i...

What is Protocol Data Unit? The data unit in the LLC level is known as the protocol data unit (PDU). The PDU having of four fields a destination service access point (DSAP), a

Describe briefly how the news filtering agent works, QUESTION (a) Conce...

QUESTION (a) Concerning agents that reduce workload, there are four agents developed using a learning approach among which is the News Filtering Agent. Name the other three age

The internet layer - fundamentals of networks, The Internet Layer The ...

The Internet Layer The  internet  layer is  responsible  for routing the data  packets  to the appropriate  destination. Internet protocol (IP) is responsible for ensuring dat

Output port - network layer and routing , Output Port The function of t...

Output Port The function of the  port is  take  the packets that have  been stored in the out  put port  memory and transmits them over the out going  link. The queuing  and bu

How does a token-passing protocol works, How does a Token-Passing Protocol ...

How does a Token-Passing Protocol works? The token-passing protocol relies on a control signal known as the token. A token is a 24-bit packet that circulates throughout the net

What are the main differences between ripv1 and ripv2, 1.  What does RIP st...

1.  What does RIP stand for? 2.  What metric does RIP use for Path Selection? 3.  If the metric used by RIP exceeds this value for a route it is considered unreachable, effec

Explain dynamic key management mechanism, Question: a) Consider the f...

Question: a) Consider the following MIP scenario. Quite a few enterprise networks use private addresses and NAPT for the communication to the Internet. i. Discu

System inheritance.., what is inheritance in computer systems special permi...

what is inheritance in computer systems special permissions?

Computer Information Systems, I am taking a computer information systems cl...

I am taking a computer information systems class for which I have an online test I need done. It will not let me attach all the material that is on the test but someone well versed

Local loop portion of the service starts, What is the juncture at which the...

What is the juncture at which the CPE ends and the local loop portion of the service starts?  Ans) The demarcation or demarc is the juncture at which the CPE ends and the local

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