Public key encryption is one type of cryptographic mechanism that uses asymmetric key pair to encrypt and decrypt the message which means the key used to encrypt the message differs from the key used to decrypt one. It was first published by Whitfield Diffie and Martin Hellman in the year 1976. A public-key encryption includes six main elements which are as follows- a. Plaintext: A message to be encrypted b. Encryption algorithm: The algorithm used to encrypt the message c. Public/shared key: This key is made public by the owner, so that others can use it to encrypt the message d. Private/secret key: This key is used to decrypt the message by the owner e. Cipher-text: This is the encrypted message f. Decryption algorithm: The algorithm used to decrypt the message Above figure depicts the general view of public key encryption process. It involves following steps- • The receiver generates asymmetric but related pair of public and private keys using mathematical function • The receiver issues public key to the sender and keep the private-key with himself in a secure place • Sender encrypts the plaintext message based on the encryption algorithm using receiver’s public key, generating the cipher-text and send it to the receiver • Receiver decrypts the cipher-text based on the decryption algorithm using his private-key, hence …show more content…
This means that one key-pair can achieve secure communication in one direction only and if receiver wants to securely reply to the sender, then sender have to generate another key pair and issue the public key to the receiver and keep private key with himself. Public key encryption is extended for communication among multiple users, by maintaining a public register or some other accessible file which contains the public keys of all the participating users and can be used by everyone to securely communicate with
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.
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.
PKC is the enabling technology for all Internet security and the increasing use of digital signatures, which are replacing traditional signatures in many contexts. However, RSA is better than PKC because RSA doesn’t need digital signature. As a result, the RSA algorithm turned out to be a perfect fit for the implementation of a practical public security system. In 1977, Martin Gardner first introduced the RSA system. After 5 years, company RSA used secure electronic security products. Nowadays many credit companies of all over the world use the RSA system or a similar system based on the RSA system.
Asymmetric Key Encryption methods are DSA, Diffie Hellman, RSA, Elliptic Curve and DSA. Asymmetric Encryption
My project mainly focuses on relatively new field of study in Information Technology known as cryptography. This topic will take an in-depth look at this technology by introducing various concepts of cryptography, a brief history of cryptography and a look at some of the cryptography techniques available today. This will have a close look at how we can use cryptography in an open-systems environment such as the Internet, as well as some of the tools and resources available to help us accomplish this.
Lv, X., Li, H., Wang, B. (2012) Virtual private key generator based escrow-free certificateless public key cryptosystem for mobile ad hoc networks ISSN: 19390114
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.
...tal part of lives just like privacy. Using cryptology provides mechanisms through a digital signature. This signature is inserted using a key (that only the writer of the email possesses) whilst a timestamp binds itself to the document. This type of cryptography is used to control access of security installations or pay-per-view television channels.
done by anyone (a private person or legal entity) who has an email address. When the money is transferred, a message is
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:
Electronic Mail, a means of communication that is growing at a very rapid rate. In this paper, I will write about introduction of e-mail, the advantage and disadvantage of e-mail, mailing lists, sending an e-mail message, sending attachments, e-mail improvement, and security features. Introduction of Electronic Mail Electronic mail (E-mail) has become popular and easy way of communication in this decade. E-mail is a method of sending and receiving document or message from one person to another. E-mail is not only replacement for postal mail and telephones, and also it is a new medium. E-mail send plain text, images, audio, spreadsheets, computer programs can attach to an e-mail message. Using the e-mail, you must have a computer on a network. The computer must require a modem and phone line. Sending and receiving e-mail needs an e-mail program. Every e-mail user requires an e-mail address. This e-mail address is similar to a postal address. E-mail address is written as username@domain, for instance, PCLEE@juno.com. The username is used for sending and receiving e-mail.
Communication is an important aspect of processing and transferring information in our society. The important entities needed for a successful communication includes; a sender, receiver, message and feedback. First, the sender is a person or entity that is sending information to the receiver. After receiving the message, the receiver will attempt to decode the message and prepares a proper response (feedback). Communication is an essential part of our daily interactions; it can be seen used in businesses, for pleasure, sports, education and many more activities.
It is created by a process in which user can send & receive bitcoins using “Wallet” software on a personal computer, mobile device or any web application.
One of the latest advancements in wireless data. It is used in GSM (Global System for Mobile Communications) for transferring data in packets.
In Any form of communication, there is a sender and receiver of the message. The question of whether the message is sent and how the message is received is of vital importance in communication. Communication is successful only when the receiver receives the intended message of the sender.