15-11-2014, 03:40 PM
Abstracts: Data Security is primary concern for every communication system. There are many ways to provide security data that is being communicated. However, what if the security is assured irrespective of the hackers are from the noise. This Project describes a design of effective security for data communication by designing standard algorithm for encryption and decryption. Cryptography is the study of mathematical techniques related to aspects of information security, such as confidentially or privacy, data integrity and entity authentication. Cryptography is not only means of providing information security, but rather one set of techniques. Confidentially means keeping information secret from all but those who authorized to see it. Data integrity means ensuring information has not been altered by unauthorized or unknown means. There are several aspects of security. They are security service, security mechanism, and security attack. Security service means a service that enhances the security of the data processing system and information transfers of an organization. A security mechanism mean that is designed to detect, prevent, or recover from a security attacks. Security attack means any action that compromises the security of information owned by an organization. Encryption means the process of converting from plaintext to cipher text. A key is a piece of information, usually a number that allows a receiver. Another key also allows a receiver to decode messages sent to him or her. Cryptography has provided us with Digital Signatures that resemble in functionality the hand-written signature and Digital Certificates that related to an ID -card or some other official documents. There are some applications of cryptography. They are secure communication, identification, secret sharing, electronic commerce, key recovery and remote access. Modern cryptography provides essential techniques for securing information and protecting data.