Encryption and Its Uses in Communication

Encryption technique is the translation of data into a secret code that will prevent hackers or identity thieves from being able to break or read the data that is sent across the network.

Encryption is the process in Cryptography to secure data. It encodes the data or information using a key in which way only the person can decode it who has the decode key. It improves the security of data or messages or files by making it un-understandable by normal view, so that it can be understand by person only who have the right decryption key.

Since the computer was invented the evolution of technology has grown into culture and has been the central of communication since the early 1980s. In order to understand the meaning of encryption and why it is so important, you have to understand why the computer was created and how inventors have continuously improved computer hardware devices. The computer was first invented to calculate numbers and help scientists with different mathematical equations. Then during the world war I, and world war II, Germans were using these computers to encrypt messages over morse code and complicated algorithms. However these algorithms of encryption were easily cracked by United States cryptographers. Over the war many encrypted messages were broken and the German military lost substations, overall control of the war; and eventually surrendering. Safe to say that encryption devices has been a necessity for transmitting data securely and in today’s society personal containment (Crayton & Culp, n.d.). Over the next five decades inventors, of all nationalities, have worked to improve encryption hardware devices from the internal architecture, removable storages, networking devices, and the overall networking security module.

Encryption has become a necessity in modern society due to the nature of the information we must interact with every day. Furthermore, the encryption of computer data is becoming increasingly important since much sensitive information is stored on our hard drives and human based codes are simply too easy for a computer to solve. All forms of encryption are based on cryptology which is "the science of analyzing and deciphering codes and ciphers and cryptograms". Cryptology and simple codes have been used as early as the Roman Empire. Encryption is used to ensure the confidentiality of a message that is being sent is not compromised as in case of the message being intercepted, it ensure that only authorized individuals can understand the contents. As technology, has been advancing, the complex nature of encrypting and decrypting messages have also been advancing the electronic age has brought forth many technological advances. With these advances came the need for security and tighter control on how we send information electronically over the Internet or through a network. Date encryption is, in its simplest terms, the translation of data into a secret code. To read an encrypted file, the receiver of the file must obtain a secret key that will enable him to decrypt the file. A deeper consider cryptography, cryptanalysis, and the Data Encryption Standard (DES) will provide a better understanding of data encryption.

Still, the methods of data encryption and decryption are relatively straightforward, and easily mastered. I have been doing data

Cloud Services have become more popular as they provide a lot of advantages like high speed processing ,Flexibility and Disaster recovery.The problem is Security of data and how to ensure that data being processed at the cloud is secure

The presentation layer receives the message and put it in a form that the receiving machine understands. The data encryption and decryption if needed occurs at this layer as well. The information generated at this layer is put into a header called data, which is added to the header received by the application layer. Now the presentation layer passes the new data to the session layer. In addition, the presentation layer at the receiving computer takes the header delivered by the lower layer (the session layer), decodes it, and presents the new data to the user at the application layer.8

Cryptography is the science of writing and deciphering secret messages. One can encrypt a message or plain-text by using a specific parameter or key to create a coded message or cipher-text. Depending on the encryption method used, the encryption algorithm may be as long as the message or shorter than the message. Encryption is used to secure channels of communication on the Internet, protect data in ATM’s, cell phones, and much more. Cryptanalysis is the procedures taken to decipher a cipher-text. The main focus of cryptanalysis is to interpret secrets during times of war, since, knowing what the enemy is thinking and doing gives a great advantage. This article will focus on the brief history of cryptography and the mathematics behind it.

Cryptography is the technique of providing secured communication in the presence of third parties. It is mostly use between individuals, military forces As we know there are various aspects which are important in information security such as confidentiality, data integrity, authentication and one important thing is that there should be assurance form the third party to contract and they should not deny of the authentication of their signature on any document so, all these are the vital part of the cryptography.

Primary purpose of cryptography is security. Cryptography has been present since thousands of years. Encryption for a longer duration is a priority in many organizations. One among them is military, which used cryptography to securely transmit a message. During 1980’s there is great necessity of securely communicating with others. Internet is present since 1960’s and the World Wide Web came into existence during 1980’s. Throughout the world people access the internet. A World Wide Web, an electronic portal, is extensively used by many people for communicating. People used World Wide Web to send electronic mails. This kind of communication increased around the world. As the information passed between the two people may be hacked by any other person, securing data and transmitting to the right person became important aspect. A deep emphasis of encryption and cryptography will help all

I am generally interested computer science and computer security so as I researched those fields I found out that it is easy to steal unencrypted so I researched what encryption and decryption really meant. After my research I found out that these are main points that classify encrypted and unencrypted information.

Public key cryptography is also known as asymmetric cryptography. Public key cryptography is dependent upon cryptographic algorithms which are based on mathematical problem. In Public key cryptography there are two keys public key and private key. Public key is a mathematical code which is known to all i.e. it is widely known. Private key is also a mathematical code but is known only to proprietor. There are many algorithm used for public key cryptography some of them are discussed below.

The nature of the algorithm used to combine the key and the plaintext is important. Secrecy is not necessary for strength. Indeed, the procedures used by the most accepted and widely used encryption algorithms are publicly available. Their strength is due not to the secrecy of their procedures, but to the fact that they have been rigorously tested and demonstrated to resist brute-force guessing attacks. Therefore, organizations should not attempt to create their own “secret” encryption algorithm, but instead should purchase products that use widely accepted standard algorithms whose strength has been proven.

Cryptography may be defined as the process of enciphering data using mathematical model or algorithm, before transmission and then deciphering the obtained data from channel using a model which works in reverse manner to the encipher thereby allowing a person to transmit information across networks so that it cannot be interpreted by any undesired means. Also it is worth mentioning that Cryptanalysis deals with analysis of data and breaking encrypted communication without acquiring attention of actual sender or receiver.

There are three different methods that encryption use and each of these method with their own advantage. Though I cannot cover all the method of encryption and decryption methods that we covered in this course, but I will demonstrate some of the them in this paper.