Statistical steganalysis schemes detect the existence of secret information embedded by
steganography. The χ2 detection and Regular-Singular (RS)-attack methods are two well
known statistical steganalysis schemes used against LSB (least significant bit)
steganography. The embedded message length can be estimated accurately by these two
steganalysis schemes. For secret communication, the resistance of steganography against
steganalysis is very important for information security. To avoid the enemy's attempts, the …