Analysis of a procedure for inserting steganographic data into VoIP calls

The paper concerns performance analysis of a steganographic method, dedicated primarily for VoIP, which was recently filed for patenting [1] under the name LACK. The performance of the method depends on the procedure of inserting covert data into the stream of audio packets. After a brief presentation of the LACK method, the paper focuses on analysis of the dependence of the insertion procedure on the probability distribution of VoIP call duration.