Design and implementation of secure public key steganography

الملخص EN

Several approaches and techniques have been proposed to make Communication via the internet secure ; one of these approaches is steganography.

Steganography is the art and science of hiding communication, a steganographic System thus embeds hidden content in unremarkable cover media so as not to arouse an eavesdropper’s suspicion.

In this research the proposed method is a public key steganography technique and it embeds a secret message in digital image with multi level of security.

The proposed method uses Discrete Cosine Transform (DCT) to embed a secret message in Bit Mapped Image Format for Microsoft Windows (BMP) image with high invisibility and high correlation between cover-image and stego-image acceptable hiding data rate