This paper proposes a new method of 2LSB embedding steganography in still images. The proposed method considers a single mismatch in each 2LSB embedding between the 2LSB of the pixel value and the 2-bits of the secret message, while the 2LSB replacement overwrites the 2LSB of the image’s pixel value with 2-bits of the secret message. The number of bit-changes needed for the proposed method is 0...

—This paper presents a new approach for watermarking of digital video providing robustness against MPEG compression. The initial video is decomposed by one-dimensional 2 Level Wavelet Transform. The low pass filtered LL video stream is used for embedding the procedure. Every frame of this sequence undergoes a 16x16 block wise DCT before the embedding procedure is applied on selected coefficient...

Lossless data hiding is the technique of embedding data in an image and retrieval of the data with lossless reconstruction of original image. In this paper, we present a novel lossless data hiding scheme based on histogram modification. This technique is based on differences of adjacent pixels for embedding data and has more hiding capacity compared to existing methods. The number of message bi...

This paper presents an additive watermarking technique for grey scale pictures, which can be extended to video sequences. It consists of embedding secretly a copyright information (a binary code) in the picture without degrading its quality. Those bits are encoded through the phase of Maximal Length Sequences (MLS). MLS are sequences having good correlation properties, which means that the resu...

This paper presents an additive watermarking technique for grey scale pictures, which can be extended to video sequences. It consists of embedding secretly a copyright information (a binary code) in the picture without degrading its quality. Those bits are encoded through the phase of Maximal Length Sequences (MLS). MLS are sequences having good correlation properties, which means that the resu...

In this Part I of a two-part paper, we address a number of fundamental issues of data hiding in image and video and propose general solutions to them. We begin with a review of two major types of embedding, based on which we propose a new multilevel embedding framework to allow the amount of extractable data to be adaptive according to the actual noise condition. We then study the issues of hid...

Existing steganography methods are still lacking in terms of capacity. Hence, a new steganography method for Arabic text is proposed. The method hides secret information bits within Arabic letters using two features, which are the moon and sun letters and the redundant Arabic extension character “-” known as Kashida. The Arabic alphabet contains 28 letters, which are classified into 14 sun lett...

Nowadays, Web Steganography is massively used for data hiding. The development of web has expanded the interest for strategies that can guarantee data security on site page. This paper utilizes the html labels (tags) to conceal the secret message. Existing schemes i.e. elements containing other element, changing case letters, line shift, word shift, line break, and changing attributes are not r...

Steganography is one of the modern techniques for covert communication through the internet. In addition to providing confidentiality, it also enables the communication of large amounts of data without raising suspicion. This paper presents a novel technique for image steganography using Lehmer code that provides high capacity and better performance. Lehmer code is a way of encoding each possib...

Spread spectrum (SS) modulation is utilized in many watermarking applications because it offers exceptional robustness against several attacks. The embedding rate-distortion performance of SS embedding however, is relatively weak compared to quantization index modulation (QIM). This limits the relative embedding rate of SS watermarks. In this paper, we illustrate that both the embedding efficie...