Design and implementation of the hybrid system for encryption and hiding the text file in the Voice over Internet Protocols.

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1 حص يى وحنفيذ نظاو هجين نخشفيز وإخفاء ان هف االنخزنج اننصي في بزوحىكىالث انصىث عبز هذا البحث (TDES) Session Initial Protocol(SIP) Real-Time Transport Protocol Real-Time Transport Control Protocol(RTCP) (DES) BMP Session Description Protocol(SDP) (RTP) Pixel Visual C Matlab7.6 (R008a) Design and implementation of the hybrid system for encryption and hiding the text file in the Voice over Internet Protocols. Dr.Manar Y. Kashmola Assistant Prof. Computer Science College of Computer Sciences and Mathematics Rasha Awad Hasan M.Sc./ ABSUTRACT The immense development in the communication network has opened new spheres that threaten the data security transferred via the communication networks. As a consequence the techniques of encryption and information hiding and merging them to increase the security of data sent.

2 The paper present suggestion and design for a system to send data secretly by merging encryption technique and information hiding using steganography technique and covert channels to hide the data. The secret data needed to be sent encoded by using Data Encryption Standard (DES) algorithm or by Triple Data Encryption Standard (TDES) algorithm. Then the encoded data were hided in a form of colored image of BMP type using Least Significant Bit technique (LSB). The covert channels of Voice Over Internet Protocol used its type value based spatial channel and active behavior to send the stego-image or text file using Session Initial Protocol(SIP) Session Description Protocol(SDP) Real-Time Transport Protocol (RTP) Real-Time Transport Control Protocol(RTCP). The results have been retrieved hidden information properly for all the protocols. The hiding in image was done by using one slide or three slides of image in one bit or two bits or three bits where the transfer taken place from one pixel to another either by using one key or two key or three key. It is concluded that the hiding in one bit given less error value but with longer execution time that is the value of depends on the number of bits were changed and by using multiple keys to increase the secrecy with the guarantee of not losing the data. Visual C and Matlab7.6 (R008a)were used in the programming. Encryption Steganography

3 [] Voice Over IP traffic volume Conversation Phase Signaling Phase traffic DES BMP TDES LSB VOIP TCP/IP Handel Sandfordr 996 TOS IP reversed TCP [8] Watanabe Gomez Cauich 004 Fragment Identification IP [7] Offset

4 Cubuk Bordly Shields IP 5 Llamas Server proxy Identification IP [0] 005 chauhan TimeStamp TCP TCP 6 Murdoch Lwies identification IP Sequence number TCP Linux [] 006 Zander Armitage Branch Time To Live (TTL) IP [6] Kwecka HTTP [9] 008 Mazurezyk Szczypiorski RTP RTCP [] SIP SDP [] 009 Anguraj Balamurugand RTP RTP 4 IP UDP, TCP, ICMP 00 TDES) (AES) Direct and Reverse

5 DES 8 TDES 4 -LSB -LSB -LSB Pixel 4 5 Mean Squared Error(): pixel فه نا يزسنا حاخف نا يزسنا حاخفي ءافخلإا فه نا يزسنا كف زيفشح عاجزخسا فه نا زفش نا ني ةرىصنا ةرىص ءاطغنا فه نا زفش نا زيفشخنا ءافخلإا يف ةرىصنا حاخفي ءافخلإا فه نا زفش نا حاخف نا يزسنا فه نا يزسنا Covert Channel تهج لاسرلإا تهج ولاخسلاا يرىص فهي وا يصن

6 m n mn x 0 y 0 stego _ im( x, y) cov er _ im( x, y) m,n stego _ im cover _ im Signal to Noise Ratio() x, y cov er _ im( x, y) cov er _ im( x, y) stego _ im( x, y). x, y Peak Signal to Noise Ratio(P) P db P [4] Undetectabililty P 0. log 0 Max value of Gray level 5 BMP *480 P P P P

7 / / P / / P , ,

9 5 6 7

10 6 source port voice over IP is one of UDP file RTCP RR RTCP SR RTP SDP SIP most popular services in IP networks Ethereal UDP source port RTP SDP SIP file SIP voice over IP is one of popular services in IP Max-Forwards Via branch CSeq From SIP RTCP 8 6 networks Tag

SDP voice over IP is one of popular services in IP Owner Ver SDP 6 networks CSeq RTP voice over IP is one of popular services in IP 8 RTP padding data

11 SDP voice over IP is one of popular services in IP Owner Ver SDP 6 networks CSeq RTP voice over IP is one of popular services in IP 8 RTP padding data Padding NTP TimeStamp padding data 6 networks RTP انشكم) 8 ( RTCP RTCP SR voice over IP is one of popular services in IP Report Block 9 NTP TimeStamp 4 6 networks

12 RTCP Sender Report RTCP RR voice over IP is one of popular services in IP Report Block Report Block RTCP Receiver Report 0 help 5 5 RTP 9 BMP 7 networks 0 0 انشكم) ( RTCP

13 أ- ب- ) ي ثم صىرة اإلخفاء انشكم) أ- ) ي ثم صىرة انغطاء وانشكم ) ب- 7 8 RTP RTCP RR RTCP SR

14 Anguraj S. and Balamurugand D.,009, "Implementation of Audio Steganography in Real-Time Protocol(RTP) and Hypothesis of RTP Features" National conference on Intelligent Electrical System(NCIES). 5- Cabuk, Serdar, Brodley, Carla and Shields, Clay (004), "IP Covert Timing Channels: An Initial Exploration", Washington, USA. 6- Chauhan, Sweety, 005, "Analysis and Detection of Network Covert Channels" Department of Computer Science and Electrical Engineering University of Maryland Baltimore County. 7- Cauich, Enrique, Gómez, Roberto and Watanabe, Ryouske (004), "Data Hiding in Identification and Offset IP Fields", University of California, Irvine USA. 8- Handel, T. and Sandford,M., 996 Hiding data in the OSI network model, in Proceedings of the First International Workshop on Information Hiding pp Kwecka, Zbigniew, (006), "Application Layer Covert Channel Analysis and Detection", University for the degree of Bachelor of Science with Honours in Networked Computing, Napier University, Edinburgh. 0- Llamas, David, (004), "Covert Channel Analysis and Data Hiding in TCP/IP", University for the degree of Bachelor of Science with Honours in Software Technology, Napier University, Edinburgh. - Mazurczyk, Wojciech and Szczypiorski, Krzysziof, 008, "Steganography of VoIP Streams", Warsaw University of Technology, Faculty of Electronics and Information Technology Institute of Telecommunication.

15 - Mazurczyk, Wojciech and Szczypiorski, Krzysziof, 008, "Covert Channel in SIP for VoIP Signalling", Warsaw University of Technology, Faculty of Electronics and Information Technology Institute of Telecommunication. - Murdoch, Steven J. And Lewis, Stephen, (005), "Embedding Covert Channels into TCP/IP", University of Cambridge, United Kingdom 4- Rana, Rita and Singh, Er.Dheerendra,00, "Steganography- Cocealing Messages in Images using LSB Replacement Technique with Pre determined Random Pixel and Segmentation Image", International Journal of Computer Science & Communication, Vol., No., PP Saffor, Amhamed and Ramli, Abdul Rahman, (00), "A Comparative Study of Image Compression between JPEG and Wavelet", University Putra Malaysia, vol. 4, no., 00, pp. 9-45, Selangor, Malaysia. 6- Zander, Sebastian, Armitage, Grenville and Branch, Philip (006), "Covert Channels in the IP Time To Live Field", Swinburne University of Technology Australia.

Packet Length Based Steganography Detection in Transport Layer

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