Date Added: Jan 2012
Cryptography is used to make users convinced that their messages had not been tainted during transmission. However, it relied on mutual trust between the communicating parties. The application of cryptography is such as key agreement, data encryption, data decryption and digital signature. The authors' approach is quite different they have encrypted the text data by the efficient compression method. Were it is quite difficult to decrypt unless until they know the particular compression technique. The cryptography is compulsory because when a shared secret can be recognized between two communicating parties online by exchanging only public keys and public constants if any.