An Approach to Secure Larger Size Data with Authenticity and Integrity

The scenario of present day of information security system includes confidentiality, authenticity, integrity, non-repudiation. This present paper focus is enlightening the technique to secure data or message with authenticity and integrity. The security of communication is a crucial issue on World Wide Web (internet) and within organizations. It is about confidentiality, integrity and authentication during access or editing of confidential internal documents. We are using a nonconventional steganography to increase security, which uses the cryptography to encrypt confidential message with the public and private keys. These keys are generated differently. Then loss-less compression takes place, which makes possible to hide larger amounts of information and documents using steganography. This paper presents a technique for constructing and implementing new algorithm based on embedding efficiently a large amount of data with high quality of encryption techniques, together with steganography, providing authentication and electronic documents integrity. Keywords— Cryptography, Stegnography, Authentication, Integrity, Image File.