数字隐写技术及发展趋势

笔者通过强调数字隐写算法和隐写分析算法间的矛盾统一,介绍数字隐写算法的发展历程和趋势以及国内外的研究现状。重点介绍具有代表性的空域LSB隐写算法和频域JPEG图像隐写算法。通过基本算法、对基本算法的分析方法、基本算法改进措施的顺序,介绍算法的发展历程,分析算法的性能。对当前实验研究的进展和数字隐写技术存在的问题进行说明,并提出一些建设性意见,对隐写技术的发展前景和方向进行展望,指出数字隐写技术会成为密码术的重要补充,在信息安全传输方面发挥巨大的作用。

Development and Trend of Steganography

Through emphasizing the contradiction and unity between steganography algorithm and steganalysis algorithm,this paper introduces the development process,trend and actuality of steganography at home and abroad.Representative algorithms such as LSB(least significant bit) steganography algorithm and JPEG((joint photographic expert group) image steganography algorithm are detailed.The developing process of the algorithms and their performance are introduced by analyzing the basic steganalysis algorithm,basic steganalysis and its basic improvements.The problems existing in steganography and the evolvement of current experimental research on this aspect are explained,and constructive suggestions are put forward accordingly.Finally,the developing trend for steganography is prospected.It is pointed out that steganography will be an important complementarity of cryptology,and play a great role in information security transferring.