Enhanced Steganographic Method Preserving Base Quality of Information Using LSB, Parity and Spread Spectrum Technique

摘要

In order to protect the data on internet from hackers, it is necessary to secure systems to send data safely. For having this security, audio steganography, using multilevel simple embedding technique is used. The main concept in our approach is to use three methods of audio steganography on a single audio file instead of using single method. Basic approach of this paper is to hide three messages in a single audio file. By using this technique host message before steganography and after steganography remains the same. In this paper, we calculate capacity and bit error rate (BER) at different bit indices and we improve bit error rate by applying multilevel technique. Average value of BER of previous technique (i.e. audio steganography using bit modification) is 0.7645 and BER of proposed technique is 0.6354, which is less than the previous one.