I. INTRODUCTION
As to the attention of the network information security
problem, the application of network information security
technology has been further research. As cornerstones of
security mechanism, the cryptography method, in a certain
extent, meet the part requirement of information security, but
today the traditional cryptography method has not suitable for
solving the problems of the multimedia aspects, in order to
better solve the problem of multimedia information security,
information hiding learning arises at the historic moment.
Nowadays information hiding as main means in some areas
such as secure communications, protection of intellectual
property rights and content authentication, has been widely
studied and applied.