关键词:软件水印; 映射字典; 排列; 逆序数
Software watermarking algorithm by inverse number of equation
JIANG Hua, SHA Zong-lu, XUAN Ai-cheng
(School of Computer & Control, Guilin University of Electronic Technology, Guilin Guangxi 541004, China)
Abstract: Aiming at speed of the program and capacity of hidden information in traditional algorithms as equation reordering,this paper proposed a new algorithm based on inverse number of equation’s operand coefficient.Reordered the operands that could be swapped, so that arranged the coefficients of the operands with a certain order.Embedded the watermark in one-to-one relationship between the inverse number and the binary number. This method is that no code added to the program, and can effectively improve the efficiency of hidden data. The size and speed of the program is not changed.
Key words:software watermarking; mapping dictionary; permutation; inverse number ......