Image Steganography Combined with DES Encryption Pre-processing

In order to improve the security of steganography, this paper studied image steganography combined with pre-processing of DES encryption. When transmitting the secret information, firstly, encrypt the information intended to hide by DES encryption is encrypted, and then is written in the image through the LSB steganography. Encryption algorithm improves the lowest matching performance between the image and the secret information by changing the statistical characteristics of the secret information to enhance the anti-detection of the image steganography. The experimental results showed that the anti-detection robustness of image steganography combined with pre-processing of DES encryption is found much better than the way using LSB steganography algorithms directly.