Eng. & Tech. Journal, Vol. 29, No. 7 ,2011 * College of Sciences, University of Al-Mustansirya/ Baghdad 1265 Steganograhy in Images by Using Intersecting Planes Esraa Jaffar Baker* Received on: 26/10/2010 Accepted on: 7/4/2011 Abstract Steganography is the art of hiding, and transmitting information using apparently innocent carrier without expose any suspicion. In this paper the proposed system is an implementation of image steganography techniques. This system will be used for embedding a steganography string into an image, which is true color image by using LSB technique to embedding text. The proposal technique is depending on the selection of the pixels that uses geometrical mathematical for intersecting planes. In this method the message cipher are repeated many time this help us to increased secure message. This method tests by many images, and give the results without distortion the image steganography. Keywords: steganography, plane, information hiding تو اط دام ور ا توء ا أ  ا رظ ار ل وا  ،رت اوء ان أ  أ رف! ةط$ ا!% ا دون ووك%(رة ا) إ. ورة+ت او ءت ا,! ذ! ورح ھ!,م اظ ا,ذه ا ھ . 2! مظذا ا ھ دم! وف وورة،+  تو ء ا ن و ورة+  وھ و,,3 زء5 ا,! دام! ل6 ا أھ) (LSB صن ا2! .  د!! 3,!ر ا,! ا و2 ,ط ر! ا(pixel) ت!و ا8ط,! ت2ر اددام ھ!9 و. ,طرذه ا ھ رات وھذا دة رر%!! رة( ار ار ادة ا ز د . رت! ا,طرذه ا ھ ء:ورة ا+ و(! ; دون! تطور، وا+ دة  . 1. Introduction ince the rise of the Internet one of the most important factors of information technology and communication has been the security of information. Cryptography was created as a technique for securing the secrecy of communication and many different methods have been developed to encrypt and decrypt data in order to keep the message secret [1]. Even if some un-authorized person can get the encrypted messages, he or she cannot understand the information without the key. However, cryptography may not be Secure because it tells the attacker clearly that some secret messages are contained in the data. Usually, the encrypted messages look very unnatural. Some malicious person or group may just concentrate on the unnatural parts, and use all computing recourses to decrypt the messages. Thus, to make the information more secure, some other technology is required [2]. An alternative technology is information hiding. Digital watermark and steganography are two representative technologies for information hiding [3]. Steganography is the art and science of communication in a way which hides the existence of the S