基于LSB图像之加密信息隐藏应用实现

北京理工大学珠海学院2020届本科生毕业论文Implementation of encrypted information hiding based on LSB imageAbstractWith the development of the Internet,people are passing information more and morefrequently,which brings convenience to people,but also brings hidden dangers to people'ssecurity and privacy.From a long time ago,people began to understand how to protect theirown information.From now on,information security is mainly divided into two aspects,cryptography and information hiding.The research on cryptography in this article is mainlyabout RSA algorithm,AES algorithm and 3DES algorithm.RSA was introduced in 1977 and belongs to asymmetric encryption algorithm,which iswidely used in public key encryption and e-commerce.As for the information hiding technology,this paper mainly studies the LSB algorithm.LSB (LeastSignificant Bits)algorithm:a common spatial data hiding algorithm,whichreplaces the least significant bit to hide secret information.The information hidden by theLSB algorithm is generally invisible to the naked eye,and can well protect secret information.The RSA algorithm can encrypt information into ciphertext,and the LSB algorithm canhide the encrypted ciphertext in the picture,people can't distinguish it by the naked eye.Combining the two can effectively protect information security.Keywords:encryption,information hiding,LSB algorithm,RSA algorithm