By offering sophisticated services and centralizing a huge volume of personal data, modern
smartphones changed the way we socialize, entertain and work. To this aim, they rely upon …

Steganography is an ancient art that encompasses various techniques of information hiding,
the aim of which is to embed secret information into a carrier message. Steganographic …

Steganography based on fixed codebook has become one of the most important branches
of speech steganography due to its high imperceptibility and having the largest available …

The extensive use of Voice over IP (VoIP) applications makes low bit-rate speech stream a
very suitable steganographic cover media. To incorporate steganography into low bit-rate …

In this study, we mainly concentrate on quantization-index-modulation (QIM) steganography
in low bit-rate speech streams, and contribute to improve its security. Exploiting the …

Frame-wise steganalysis is of significance for active steganography defense. By frame-wise
detection, we can accurately find the embedding position of secret information and destroy …

In this study, the authors present a new steganographic technique called random least
significant bits of pitch and Fourier magnitude steganography (RLPFS). It is based on hiding …

This paper presents an improved version of a steganographic algorithm for IP telephony
called HideF0. It is based on approximating the F0 parameter, which is responsible for …

A fundamental problem in steganography is the trade-off between the hiding capacity and
the quality of the stego signal. Researchers have found in the Discrete Cosine Transform …

Analysis-by-synthesis linear predictive coding (AbS-LPC) is widely used in a variety of low-
bit-rate speech codecs. The existing steganalysis methods for AbS-LPC low-bit-rate …