Date Added: Jul 2012
Today's world, for secure data transmission via Internet or any public network, there is no alternative to cryptography. The role of Cryptography is most important in the field of network security. The main goal of cryptography is Confidentiality, Integrity, Authentication, Non-repudiation. Cryptography is widely used by governmental and intelligence agencies around the world to safe transmission of any format of messages online or offline. In this paper is made for the cryptography algorithms, particularly algorithms are compared and performance is evaluated.