Data Encryption and Authetication Using Public Key Approach

Today various numbers of diverse applications that include e- payments in secure commerce and payment applications to provide security for their communications and transactions by protecting passwords. Encryption is a fundamental tool for the protection of sensitive information. The purpose is to use encryption is privacy for preventing disclosure or confidentiality in during communications. In this paper, we proposed a new method which is based on the Euler's Totient theorem to produce a set of numbers that encrypt the data stream and then we used our proposed method using an ECC approach to generate the signature key which is added to encrypt data before transmission and decryption operation and a signature can verify at the receiver site.