For thousands of years cryptography and encryption have been used to secure communication. Military communication has been the leader of the use of cryptography and the advancements. From the start of the internet there has been a greater need for the use of cryptography. The computer had been invented in the late 1960s but there was not a widespread market for the use of computers really until the late 1980s, where the World Wide Web was invented in 1989. This new method of communication has called for a large need for information security. The internet allows people to communicate sensitive information, and if received into the wrong hands can cause many problems for that person.
Cryptography is the study or science of techniques of secret writing and message hiding. Cryptography constitutes any method in which someone attempts to hide a message, or the meaning in some medium. One specific element of cryptography is encryption, which hides the data or information by transforming it into an undecipherable code. Encryption uses a specified key to perform the data transformation. The length of the key for the encryption
The protection of data being transferred between ATMs and the bank, and the use of cell phones is the most common everyday encounter with encryption. To encrypt and decrypt information a cipher is used. In a cipher there is a set of well-defined steps that can be followed to encrypt and decrypt messages. The use of a cipher relies greatly on the use of an encryption key. The key may contain any auxiliary information added to the cipher to produce certain
What is encryption? Encryption is a technological technique that protects and secures the transfer of plain text information between two sources through the use of the internet. This is done by rearranging the text using a mathematical algorithm that renovates the message into an indecipherable form, which can only be unlocked and translated with a use of a key. The strength of the encryption key is measured by its length, which is determined by the number of bits and by the type of encryption program.
Asymmetric Encryption is used to protect the data while in movement. Asymmetric Encryption is also known as Public Key Encryption. It uses two related keys, a public key and a private key which is not shared with anyone. This pair of keys are developed by mathematical methods which can be solved in one direction. So anyone can encode a data using the public key but only the user with a private key can decode that specific data. The length of Asymmetric Key Encryption is normally 1024 or 2048 bits. However, in Asymmetric framework the keys with smaller than 2048bits are considered as not safe to use.
Encryption is a strategy for changing data on a computer in a manner that it gets to be distinctly incomprehensible regardless of the possibility that somebody can access a PC with individual information on it.
This program uses mainly on the concept of cryptology. Cryptology is the study about secret communication between two parties, where there is a presence of a third party known as adversaries, and that party knows nothing about the content of the communication (Rivest, 1990).
Cryptography or Cryptology comes from the Greek words kryptós meaning "hidden, secret” and graphein, "writing", So cryptography is the study/practice of hidden writing, or coding messages in order to send messages between two parties without a third party being able to read the messages. Cryptography is a process invented thousands of years ago, but was tedious to use as messaged had to be drafted, encoded, transported, decoded before reaching its intend recipient. It wasn’t until the early 20th century when mechanical devices cable of complex mathematical calculations were designed to automate the encoding and decoding of messages in such complex ways that it would be near impossible to decode by hand. An example of this
In the rapidly developing field of computer science, there is no more controversial issue than encryption. Encryption has become a highly contested issue with the broad use of global networks including the Internet. As more and more sensitive documents are being placed on computer networks, and trusted information is being sent from computer to computer throughout the world, the need for encryption has never been greater. However, the effects of encryption on our lifestyle and the government's role in encryption has been (and will continue to be) debated for years to come.
Technique of protecting information by changing in to other format is nothing but Cryptography, this technique is called Cipher text. This process involve a secret key through which readable message is totally converted into unreadable message, in order to decrypt the unreadable message secrete key is must. Generally this is used is communication, don’t know if communication breaks in middle the message which is private may go leak, so, to protect private data transfer cryptography is must. At the receiver end using the same key the receiver gets the actual message. This is must in almost all businesses, especially in banks, export import business and so on. Encrypted messages sometimes broken which is called code breaking using cryptanalysis. The strength of encryption is totally relays on how strong the secret key is. As there is only one mode of communication through internet and many were accessing internet may be possibilities of having breaking of codes, so, encryption must be strong. Encryption is of two types based of the type of secret key whether public or private.
This is the information age. There are financial and corporate information, research and analysis, trends have lead the trend and military intelligence. Information classified as confidential, sensitive and critical. There are gleaning information extraction and automated tools. There are management solutions, such as content management, knowledge management and document management, information management collected for. There are different mechanisms for storing information storage. Finally, information security, there are tools and techniques. In this paper, three important types of security information we need to discuss, such as security information from hackers, during transit to ensure that information and the protection of information stored in the system can be lost or stolen. Finally, a brief about wireless security has been described here. The Internet has become the information superhighway. Evolving Internet and related technologies have allowed companies to communicate in new ways with all types of people and strategic organization. Over the years, there have been increased after the distinctive features of Internet connection. As needs change, the more powerful the service of humanity encountered, faster connections, and what can be done in the need for more flexibility. Initially, the service, such as a simple POP3-based email and Web access is the extent of an Internet connection. Today, we have a site-to-site virtual private network (VPN), clients and home users VPN, streaming media, Web-based training, wonderful Internet applications, e-commerce, and business-to-business extranet. Therefore, the development of the Internet to meet the needs of a variety of advanced human society. On the home front, fr...
Data encryption refers to the process of transforming electronic information into a scrambled form that can only be read by someone who knows how to translate the code. In nowadays business world, it’s the easiest and most practical way to secure the information that we stored and processed, and it’s significant for our sensitive information. For example, as electronic commerce is popular now, the vendors and retailers must protect the customers’ personal information from hackers or competitors. They also have many business files or contracts that need to be strictly protected. Without data encryption, these important information may fall into wrong hands and be misused by others. Besides, data encryption may be used to secure sensitive information that exists on company networks, or create digital signatures, and help to authorize in business. No one should underestimate the importance of encryption. A little mistake in encryption may make sensitive information revealing, or even result in illegal and criminal accuse.
Codes have been around for centuries ranging from wax, invisible ink, Morse code, the Enigma used by the Germans during World War II and now steganographic. Steganography is the latest form to insidiously hide information over the Internet without a trace of a file being altered. You are able to hide messages within images, voice or music. Steganography is an ancient method of hiding messages. Today messages are hidden in images and music. Steganography can be traced back to the ancient Greek who would write messages on tablets and cover them in wax. This made the tablets look blank and unsuspicious (Kolata, F4). Citizens of ancient civilizations would tattoo messages on their shaved heads. They would then let their hair grown in and travel across enemy lines to deliver the message (Seper, G1). During World War II the Allies placed a ban on flower deliveries with dates, crossword puzzles and even report cards (Kolata, F4) for fear of a message being hidden with in. Steganographers first alter their data by using encryption and then place the image into a pre-select image. Steganographers look for a piece of code that would be the least significant and look the least altered to the human eye (Kolata, F4), being as inconspicuousness and random as possible. This makes the messages undetectable unless you knew that there is a message hidden and you were able to crack the code.
Computer science is a vast field that includes nearly everything relating to computers. Everyday there is information transmitted all over the Internet. Pictures are uploaded, transactions are made on thousands of online retail websites, and banking transactions take place everyday on the Internet. All of these transactions have created a need for secure communications. People wish to keep things like banking, medical, and political information from the eyes of unwelcome parties. This has created a need for cryptography. Cryptography is the science or study of the techniques of secret writing, especially code and cipher systems, and is used by everyone from the average citizen to the government and military.
Data encryption refers to the transformation of data into a structure that makes it unreadable by anyone without a secret decryption key. It ensures that messages can be read only by the planned recipient. Encryption is the procedure of obscuring information to create it unreadable without special information. Only organizations and individuals with an abnormal need for secrecy have actually made good use of it. Nowadays, encryption is one of the most important technologies for maintaining your privacy and the security of important information. This helps out greatly especially when E-Commerce is being used.
Cryptography the method of applying protocols to information to make it seem like nonsense to hurt those who do not know the protocols. Cryptology is used to encrypt messages and create secure codes; the earliest known use of Cryptographs was in Egyptian times but over time several different types of cryptographs were made today we use it to keep information secure and to create registration numbers.
In this era when the Internet provides essential communication between tens of millions of people and is being increasingly used as a tool for security becomes a tremendously important issue to deal with, So it is important to deal with it. There are many aspects to security and many applications, ranging from secure commerce and payments to private communications and protecting passwords. One essential aspect for secure communications is that of cryptography. But it is important to note that while cryptography is necessary for secure communications, it is not by itself sufficient. Cryptography is the science of writing in secret code and is an ancient art; In the old age people use to send encoded message which can be understand by the receiver only who know the symbolic and relative meaning of that encoded message .The first documented use of cryptography in writing dates back to circa 1900 B.C. Egyptian scribe used non-standard hieroglyphs in an inscription. After writing was invented cryptography appeared spontaneously with applications ranging from diplomatic missives to war-time battle plans. It is no surprise, then, that new forms of cryptography came soon after the widespread development of computer communications. In telecommunications and data cryptography is necessary when communicating in any untrusted medium, which includes any network, particularly the Internet [1].Within the context of any application-to-application communication, there are some security requirements, including:
The Internet offers a huge wealth of information, both good and bad. The Internet began as a small university network in the United States and since then has blossomed into one of the biggest if not the biggest telecommunications network covering the entire world. It can be considered as one of the most valuable types of technology. During the past several years we have come to become more and more dependent on the Internet and in particular moving huge chunks of data across large distances. The Internet allows people to communicate with each other across the world within mere fractions of seconds with the help of E-mail. The Internet also allows for expressing opinions and obtaining up-to-date information from the World-Wide-Web. New software is being developed everyday which uses Internet as the carrier for long distance voice calls and video conferencing which would hold the key to the future of our society.