This paper proposes a nonparametric steganalysis method for quantization index modulation (QIM) based steganography. The proposed steganalysis method uses irregularity (or randomness) in the test-image to distinguish between the coverand the stego-image. We have shown that plain-quantization (quantization without message embedding) induces regularity in the resulting quantized-image; whereas me...

Received Oct 10 th , 2012 Revised Nov 20 th , 2012 Accepted Dec 10 th , 2012 Steganalysis is art and science of detecting messages hidden using steganography. In this article a novel universal image steganalysis technique is proposed in which various moments like invariant, statistical moments and Zernike and various other similarity measure parameters like MSE, PSNR, RMSE, SSIM, Shannon’s ENTR...

The design of both steganography and steganalysis methods for digital images heavily relies on empirically justified principles. In steganography, the domain in which the embedding changes are executed is usually the preferred domain in which to measure the statistical impact of embedding (to construct the distortion function). Another principle almost exclusively used in steganalysis states th...

Steganography is the study of concealing and sending a secret message by making eavesdropper unaware its presence. First ever attempt to propose steganography via quantum key distribution (QKD) was made Martin in his paper where BB84 QKD used for communicating steganographic messages. The protocol have recently been found be insecure against detection based steganalysis attack which uses ambigu...

Steganalysis and forgery detection in image forensics are generally investigated separately. We have designed a method targeting the detection of both steganography and seam-carved forgery in JPEG images. We analyze the neighboring joint density of the DCT coefficients, and reveal the difference between untouched image and the modified version. In realistic detection, untouched image and the mo...

Mp3 is a very popular audio format and hence it can be a good host for carrying hidden messages. In fact, different steganography methods have been proposed for mp3. But, only steganalysis of mp3stego has been conducted in the literature. In this paper we mention some limitations of mp3stego and argue that Undermp3cover (Ump3c) does not have them. Then, steganalysis of Ump3c is conducted based ...