Steganography method of Excel 2007 document
Xin Guo-jiang · Computer Engineering and Applications Journal · 2010
Microsoft Office Excel 2007 document introduces a new default file format.The file format,called Excel XML format,offers new ideas for steganography in Excel documents.Combining the features of Excel 2007 documents and XML specifications,an Excel 2007 document steganography method based on insignificant attribute is proposed.Firstly,the hidden information is encrypted and converted to the Unicode hexadecimal code.Then,the XML components used for hiding information are selected.And then an insignificant attribute is created.Finally,the converted string is written as the value of the insignificant attribute.Experiment results show that the method can achieve large information-carrying capacity and a better result with the imperceptibility.The method can be used for secret communications.