基于 RSA 与 LSB 算法的信息隐藏

信息隐藏技术将特定信息嵌入数字化宿主信息中，由于宿主信息呈现变化不大，不会引起监控者的注意和重视，从而减少了被攻击的可能性。为了提高信息隐藏效率与在非授权情况下提取信息的难度，提出将信息加密后进行隐藏，具有更高的安全性。在信息隐藏前对敏感信息进行了信息分割、RSA加密预处理；将控制信息也嵌入到BMP文件的图像数据区；实现了改进的LSB算法，并通过实验进行了验证。

Hiding Information in BMP based on RSA and LSB Algorithm

Information hiding technology could make secret or private information be embedded in host information media. Because the host information has no change, the monitor could not be aware of information hiding. The cryptography and information hiding technology is studied, and through the human visual redundancy, information hiding and restoring in the 24-bit bitmap image file are achieved. Separating and encrypting the information would make higher security before hiding it. Through improved information of the hiding algorithm, the integrated use of RSA, LSB and data partitioning technology enables encryption/ decryption system. The test results show that the system can effectively achieve the hiding secret informa- tion, and the irreversibility greatly enhanced, the content of the hidden information is not limited.