Authentication of encrypted secret information in image steganography

Abstract

Steganography is the art of hiding the existence of data in another transmission medium to achieve secret communication. Steganalysis is the method of discovering the secret message. These two areas are very useful in secret communication. In this paper the proposed scheme is an image steganography that can verify the integrity of the secret information which is transmitted to the receiver. Integrity is the method to verify whether the information is altered by the attacker. The process embeds the encrypted secret message into the cover image with the veracity verification code. To verify the integrity the veracity verification code is used. Two special AC coefficients are used to create the veracity verification code. The Bit Error rate (BER) and the Peak Signal to Noise Ratio (PSNR) calculation are performed.