Maya

Rettzigi

The main purpose in cryptography technology is to make message concept unintelligible, while steganography aims to hide secret message. Digital images are excellent carriers of hidden information. We propose a method of combining steganographyand cryptography for secret data communication. In this paper, we propose a high-performance JPEG steganography along with a substitution encryption methodology. The approach uses the discrete cosine transform (DCT) technique which used in the frequency domain for hiding encrypted data within image