Dual Steganography - For Hiding Text in Video by Linked List Method

The recent growth in computational power and technology has propelled the need for highly secured data communication. One of the best techniques for secure communication is Steganography-a covert writing. It is an art of hiding the very existence of communicated message itself.. The aim is to design a steganography algorithm which not only hide the message behind the image but also provide more security than others .A new steganography technique for embedding both text or image in cover images by using LSB & Link List method is implemented. This steganography technique is completely a time domain (pixel based) and secret messages are embedded directly into 24- bit color image. Two ways are provided for embedding the secret data inside cover image such as sequential encoding and random encoding for both text & image .For the purpose of security, encryption technique is used with a userdefined key. RGB image format is used to improve the quality of the stego image.