Image Steganography by Enhanced Pixel Indicator Method

Image Steganography by Enhanced Pixel Indicator Method Image Steganography by Enhanced Pixel Indicator Method Using Most Significant Bit (MSB) Compare Vijaya Raghava Kukapalli ,Dr.B. Tarakeswara Rao, Mr.B.Satyanarayana Reddy AbstractSteganography is one of the secure ways of protecting data. It provides secrete communication between user and client. The current paper presents an enhanced Pixel Indicator Method (PIM) by comparing three MSB bits at each pixel to embed the data. And we also use Blowfish algorithm to convert message into cipher text. By using the combination of these two techniques we can achieve greater complexity. Due to this mechanism proposed method makes the message difficult to be discovered with less distortion and embedding rates. Keywords: Steganography, Pixel Indicator, Blowfish, Distortions, Embedding Rates. INTRODUCTION Since the rise of the www (World Wide Web) one of the most important facts of Internet. Cryptography is one of the method through which we can achieve security. Two main methods of cryptography are encryption and decryption. By using these two techniques we can provide security for our secrete data. But there are some drawbacks in cryptography such as Brute-force attacks by which the intruders can identify the data. To avoid brute-force attacks it is necessary to have a larger key space [1]. And using Cryptanalysis the can extract the original data. Steganography is a technique to hide the secrete information. It I related to Cryptography is just about old technique. It was used by the Ancient Greeks to hide information from other troops. The word steganography I derived from the Greek word â€Å"stegos† meaning â€Å"cover† and â€Å"grapy† meaning â€Å"writing† defining as covered writing. Essentially information hiding is the main task of steganography. The embedding process creates a stego image which contains information. The basic method used to hide data in image is LSB technique. By using this technique we store the information in least significant bit of each pixel. One of the common encoding performed over the secret image before embedding is Huffman Encoding [2]. Steganography has two primary goals: 1) Security-It is the hidden data stored by either person or a computer.2) Capacity-It shows how much data can be hidden in a given cover image. These two goals are often in competition. As a result, steganography started to attract the attention of computer researchers and users. In fact, the goal of steganography is to hide the important information of communication by embedding the secrete data to transmit into a digital media file such as image or text files. OVERVIEW OF STEGANOGRAPHY Least Significant Bit (LSB) Method This is one of the most important and popular techniques of steganography. By this method, least significant bits of the pixel (in black white images) or colors are used to embed secret message bits. It is a good steganography mechanism since changes in a least significant bit yield few changes in the original image. The stego-image quality is improved by using LSB technique. In this technique, certain least significant bits of cover image are replaced with secrete data [3]. Suppose, for example, the by the American Standard Code for Information Interchange (ASCII) with the numerical value as 01000111, is replaced with the following pixel values (the underlined bits represent the embedded bits): Pixel 1= (R=00011101, G=00111010, B=11001010) =>(R=00011100, G=00111011, B=11001010) Pixel 2= (R=01011001, G=10011011, B=11001110) =>(R=01011000, G=10011010, B=11001111) Pixel 3= (R=10010100, G=10101001, B=00110000) =>(R=10010101, G=10101001, B=00110000) The LSB approaches are divided into two fixed- and variable-length categories [4]. By the fixed-length methods, a given number of least significant bits of a byte are selected for embedding the data. In the variable-length method an assortment numbers of least significant bits of the proposed byte are chosen [5]. Cleanness and the pace of little changes in the portrait are the advantages of these techniques, while the disadvantage includes the chance of fast revealing. Pixel Indicator Process Adnan Gutub(2010)[6] in reference developed a method where a single color among three color components of a pixel was served as the pixel indicator; meaning that it indicates which colors in the pixel contains hiding bits of a secret message. Random values are selected for the indicator of each pixel, based on which message bits are placed in other colors of that pixel. The indicator uses two bits inserted inside two least significant bits of a specific color considered as the indicator. To increase the security of this technique, the color chosen as the pixel indicator is varied, so in the first pixel, Red is the indicator, Green is Channel 1, and Blue is Channel 2. For second pixel, Green is the indicator for pixel, Red and Blue act as Channel 1 and Channel 2, respectively. Finally, in third pixel, Blue is the indicator, while Red and Green act as Channel 1,Channel 2. The embedding of message is flowcharted in Figure 1.Pixel Indicator Embedding Process Because of the application of indicator; this method needs a wide space and, obviously, registration of color Figure 1: Pixel indicator embedding process The study uses the basic model of LSB swap along with Pixel Indicator and follows the same but with different think [7].Two such methods are described here: one with evade indicator and other with recurring indicator.LSB swap offers enhanced quality and capacity. On the words, confidential data is entrenched in data channels by modifying the cover image bits. In his propose method we first estimate the mean and standard deviation of every pixel if the entire image.The accidental traversing path is used for embedding to increase messiness .The representation for this study is given by the author. Before embedding process starts up, each cover image submits itself to control by means of translation of matrix and modulo [8].Hence the cover image undergoes successive alterations even before embedding. The plan of calculating mean and also standard deviation increases the difficulty of embedding rates. PROPOSED SOLUTION The study uses the primary concept of LSB swap along with Pixel Indicator and follows the same but with different methodology .The technique uses the MSB bit of RGB channels of a pixel. The channels can be choose in random (or) in sequence i.e. RGB, RBG etc soon [9] .However the indicated MSB bits are available at random based on image size, quality and its properties. The relationship between the hidden data in 3 channels is shown in Table 1. Indicator values based action. TABLE 1: INDICATOR VALUES BASED ACTION We have selected the indicator channels in sequence that is Red, Green and Blue. And then we find the MSB bit of each channel to know the bits. Once we got the bits we needed then we can perform the following process. The process of encryption and decryption takes place before hiding and after retrieving original information. During the encryption and decryption both sender and receiver uses same key/password. The encryption technique we used here is Blowfish which is having key length from 32 bits to 448 bits and it uses symmetric block cipher. Blowfish is developed in 1993 by Bruce Schneier as an alternative to existing algorithms. Blowfish algorithm [10] is a Feistel Network in which there are 16 rounds. In each round different sub keys are used. The block size is of 64 bits and key can be any length up to 448 bits. Figure-2: Flow chart for embedding data Algorithm for embedding Read the cover image(C) and secrete data to be embedded (D). Converting the secrete data into cipher text using BLOWFISH algorithm. Extract the length of the secrete data and store it in first 8 bytes. Divide each pixel into R, G, and B planes. And find the MSB bits of the 3 planes. By using the Tabel-1 select the channels where you want to store data. Repeat the process till all the secrete data is stored. Store the resultant stego image. Algorithm for Extraction Read the stego image. Split the pixel into RGB channels and find the MSB bit of each channel. Compare the retrieved bits with the Table 1 to find the channels that contain data. Now get the encrypted data and perform the decryption process to get original data. Repeat the process until the all data is retrieved. RESULTS AND DISCUSSION The technique was implemented and tested in java. The technique accepts all mainly JPEG, PNG; BMP images of size 260Ãâ€"349.We can select a bmp image for testing the proposed Enhanced PIT algorithm. The PIT method is compared with the Stegoimage-1bit, Stegoimage-2bit, Stegoimage-3bit, Stegoimage-4bit. The approximate BMP image size used is 512 X 384 used to veil a text message of 11,733 characters length. The algorithm is used to hide 1-bit, 2-bits, to find the effect of transparency, security and capacity. Tests results showed different levels of diagrammatic inspections and histograms based study. For influence obligation the numbers of pixels used are recorded in each trial run. Figure 3: Original image Figure 4: Stego image Higher PSNR (Peak Signal-to-Noise Ratio) [11] indicates that the steganography images are of high feature and does not hunt for the interest of the intruder because if zilch image artifacts. MSE (Mean Squared Error) and PSNR (Peak Signal-to-Noise Ratio) are given by: MSE=)2 Where M, N=Dimensions of the image. Ci,j=The pixels in the original image. Si,j=The pixels of the stego image. PSNR=) DB Where, for color image =255. CONCLUSION The current paper provided a technique by exploiting differences made between colors to embed message bits in two least significant bits. Since color selection is based on color differences and values of variable N, the message will be hard to detect. Furthermore, as there is no need to insert additional information, changes in image will be small and image quality will be higher. Another important point to be mentioned is that embedding which is first applied on first least significant bits and, then, second least significant bits yields few changes in the original image for messages with small sizes. Because changes in second least significant bits will make more changes in color values. Therefore, it is likely to be avoided, unless this approach needs to be worked. ACKNOWLEDGEMENT First and foremost, I would like to be grateful Dr. B. Tarakeshwar Rao for his most support and encouragement. He benevolently read my paper and offered valuable meticulous advices on grammar, association, and the idea of the paper. Finally, I honestly thank to my parents and friends. REFERENCES [1] Enhanced chaotic key-based algorithm for low-entropy image encryptionYavuz, E.Yazici, R.Kasapbasi,M.C.Yamac, E.Signal Processing and Communications Applications Conference(SIU),s201422ndDOI:10.1109/SIU.2014.6830246Publication Year: 2014, Page(s): 385 388 [2] A novelsteganographymethod forimagebased on Huffman EncodingDas, R.;Tuithung, T.Emerging Trends and Applications in Computer Science (NCETACS), 2012, 3rdNationalConference nDOI:10.1109/NCETACS.2012.6203290Publication Year: 2012, Page(s): 14 18. [3] Enhancing the Security and Quality ofLSBBased ImageSteganographyAkhtar, N.Johri,P.Khan,S.Computational Intelligence and Communication Networks (CICN), 20135thInternationalConferenceonDOI:10.1109/CICN.2013.85Publication Year: 2013, Page(s): 385 390 [4] Potdar, Vidyasagar M., Song Han, and Elizabeth Chang,Finger printed secret sharing steganography for toughness against image crop attacks, INDIN05. 2005 3rd IEEE International Conference, 2005, pp. 717-724. [5] Lou, Der-Chyuan, and Jiang-Lung Liu, Steganographic method for secure communications, Computers Security 21, no. 5, 2002, pp. 449-460. [6] Gutub, Adnan, Mahmoud Ankeer, Muhammad Abu-Ghalioun, AbdulrahmanShaheen, and AleemAlvi, Pixel indicator soaring capacity performance for RGB image based Steganography, WoSPA 2008-5th IEEE International. [7] Evaluating image steganographytechniques: Future research challengesRoy, RatnakirtiChangder,Suvamoy;Sarkar,Anirban;Debnath,NarayanComputing, Management and Telecommunications (ComManTel), 2013 International Conference,onDOI:10.1109/ComManTel.2013.6482411 Publication Year: 2013, Page(s): 309 – 314. [8]Free vibration analysis of circular cylindrical shells using transfermatrixmethodGuanmoXieElectric Information and Control Engineering (ICEICE), 2011InternationalConferenceonDOI:10.1109/ICEICE.2011.5778195Publication Year: 2011, Page(s): 423 – 426. [9] RGBbased dual key imagesteganography Dagar, S.Confluence 2013: The Next Generation Information Technology Summit (4th International Conference)DOI:10.1049/cp.2013.2334Publication Year: 2013, Page(s): 316 320 [10] Security analysis ofblowfishalgorithmAlabaichi, A.;Ahmad, F.;Mahmod, R. Informatics and Applications (ICIA),2013 Second International Conference on DOI:10.1109/ICoIA.2013.6650222Publication Year: 2013, Page(s): 12 – 18. [11] Stego image quality and the reliability ofPSNRAlmohammad, A.;Ghinea, G. Image Processing Theory Tools and Applications (IPTA), 2010 2nd International Conference onDOI:10.1109/IPTA.2010.5586786Publication Year: 2010, Page(s): 215 – 220.

Can Detroit Make the Cars Customers Want? Essay

Ans: AutoNation is having a problem with inventory because of the culture of ordering a customized vehicle for a customer, but such an order usually adds six to eight weeks to the transaction. The customer who wants to buy on the spot must choose from cars on the lot that the manufacturer has already configured, priced, and shipped. Despite manufacturer incentives and rebates to entice customers to purchase, dealers often have a glut of new cars sitting in their lots for months at a time that no one wants to buy it. The swollen inventory and slow turnaround hurt dealers because they must borrow money to pay for the cars the manufacturers ship. This has also become a problem for auto manufacturers such as GM, Ford and Chrysler due to their manufacturing processes which are not set up to quickly change production models and have been geared toward optimizing the efficiency of the production plant. Again because of the frequent change in consumer tastes which can shift almost overnight as gasoline prices rise or fall, or as one automotive fashion fad gives way to another. This problem is impacting the business performance of AutoNation and of the auto manufacturers because of following reasons. 1. It has become imperative for the manufacturers to keep their plants running regardless of demand to pay for the rising costs of employee healthcare and pensions. What’s more, auto workers must be paid most of their salaries regardless of whether they are working, so manufacturers want them working all the time. 2. Losing market share to the Japanese and Koreans 3. Auto manufacturers are scrambling to revamp their product line up 4. The enlarged inventory and slow turnaround hurt dealers because they must borrow money to pay for the cars the manufacturers ship. 2. What pieces of data do AutoNation need to determine what cars to stock in each of its dealerships? How can it obtain these data? Ans: The following pieces of data AutoNation need to determine†¦ Preferences of car buyers Most popular configurations They put forth a major effort to consolidate the customer lists from its hundreds of dealerships. They uses proprietary analytic software as well as assistance from DME, a marketing firm with expertise in creating customized direct mail campaigns. 3. What is AutoNation’s solution to its problem? What obstacles must AutoNation overcome to implement its solution? Ans: They categorized their customers into groups with the help of DME and propriety analytical software and follow unique strategies for each category. They create sales pitches, service specials etc. for each group. In the past they tried to search for customers who want to buy the cars that they produced but now they are producing what customers looking for. And also AutoNation is trying to apply these principles of market intelligence to auto manufacturing. They use data mining techniques to determine the demand for each model and very accurate configurations of each model among thousands of possible variations that are most popular with buyers. With this they can focus on producing these vehicles in the numbers that the data dictate. Therefore they don’t have to keep unnecessary inventory. To auto manufacturing, the auto nation must overcome this problem such as the rising of gasoline price and the demand to the pay for the rising of cost employee healthcare and pensions. It will be effective enough to bring production in line with the customers demand. It can lower the rising cost of gasoline and makes the company revenue up to 90% total earn for selling branded cars. And also it will help them to compete with Japan and Korean car producers. They can determine the demand for each model and very accurate configurations of each model among thousands of possible variations that are most popular with buyers. MIS In Action Explore autonation.com, examining all of its features and capabilities. Then answer the following questions. 1. How does this Web site help AutoNation forge closer ties with customers and potential customers? Ans: The AutoNation web site offers vast experience in new and used car sales and service. They have a large selection of cars, trucks and SUVs on the web. That means that customers can easily find the vehicle that they want. It doesn’t only help the customers to find the right price. Using their web site, customers can explore car pricing options with a quick quote or by payment, then research reviews and compare new and used cars that fit their budget and needs, check available auto financing and leasing plans, and search AutoNation’s huge auto inventory to locate the car, truck or sports utility vehicle that customers like. Their dealers carry popular brands including Acura, Audi, Bentley, BMW, Buick, Cadillac, Chevy, Chrysler, Dodge, Ford, GMC, Honda, Hyundai, Infiniti, Isuzu, Jaguar, Jeep, Land Rover, Lexus, Lincoln, Mazda, Mercedes-Benz, Mercury, MINI, Mitsubishi, Nissan, Pontiac, Porsche, Saturn, Scion, Subaru, Toyota, Volkswagen and Volvo. Therefore customers have a vast collection to pick their choices. AutoNation’s dedicated sales force is available by email or telephone if customer has questions, need information or wish to complete their transaction online. Or, if customers prefer to visit one of AutoNation’s local auto dealerships, he/she can search for the closest dealership through this site. That is how they have ties with customers and potential customers. 2. What information could AutoNation collect from its Web site that would help it determine in which makes and models of cars are of most interest to potential buyers? Ans: †¢ What type of cars customers looking for (used/brand new) †¢ What is the brand that customers looking for †¢ Which model †¢ When the vehicle is designed †¢ If it is a used vehicle then mileage †¢ In what period of the year people buy more vehicles †¢ Usually how much a person spend on a vehicle †¢ What is the customer total income †¢ What type of customers buy which brand

Quantitave Plating

BioSci 101 – Lab Section 810 QUANTITATIVE PLATING PURPOSE The purpose of this lab is to see the effects of pasteurization while emphasizing the process for serial dilutions. PROCEDURE See references (1) RESULTS As the dilution factor increased for both the raw milk (unpasteurized) and pasteurized milk samples, the number of colonies decreased. The number of cells/mL in the pasteurized milk sample is considerably less than the number of cells/mL in the raw milk sample. RAW (UNPASTEURIZED) SAMPLE Dilution Factor| Number of Colonies| Number of cells/mL| 10-3| TMTC| TMTC| 0-4| TMTC| TMTC| 10-5| TMTC| TMTC| 10-6| 284| 284,000,000 cells/mL| 10-7| 44| 440,000,000 cells/mL| | AVERAGE| 362,000,000 cells/mL| PASTEURIZED SAMPLE Dilution Factor| Number of Colonies| Number of cells/mL| 10-3| 71| 71,000 cells/mL| 10-4| 9 (TLTC)| TLTC| 10-5| 6 (TLTC)| TLTC| 10-6| 1 (TLTC)| TLTC| 10-7| 12 (TLTC)| TLTC| | AVERAGE| 71,000 cells/mL| DISCUSSION/CONCLUSIONS Pasteurization, a process named after sc ientist Louis Pasteur, involves the application of heat to destroy the majority of human pathogens in foods.In the dairy industry, pasteurization involves the â€Å"heating of every particle of milk or milk product to a specific temperature for a specified period of time without allowing recontamination of that milk or milk product during the heat treatment process. † (2) For public health purposes, pasteurization is the process of making milk and milk products safe for human consumption by destroying all bacteria that may be harmful to health. (2) A serial dilution is a laboratory technique in which a substance is decreased in concentration in a series of proportional amounts. Dilutions are usually made in multiples of 10. 3) The viable plate count procedure allowed for live cells in the milk samples to be analyzed. The raw milk (unpasteurized) sample demonstrated too many colony forming units to count in the first three dilutions of 10-3, 10-4, and 10-5. The 10-6 dilution d emonstrated 284,000,000 cells/mL and the 10-7 dilution demonstrated 440,000,000 cells/mL. This demonstrates that raw milk contains a lot of bacteria even after multiple serial dilutions. In the 10-3 pasteurized sample, the plate exhibited 71,000 cells/mL. The results of the additional dilution samples contained too few colony forming units to count.However, in the 10-7 dilution, although the plate demonstrated 12 colonies, there should have been no colony forming units on this plate. The reasons for this could have been that this sample was contaminated from â€Å"double-dipping† the sample before dispensing it onto the plate or when using the pipette, it mistakenly was inserted in a higher concentration sample and then immediately to a lower concentration sample before it was dispensed onto the plate. The results suggest that pasteurization kills most pathogens in milk by brief exposure to relatively high temperature.This was demonstrated most beneficially with the 10-6 and 10-7 dilutions wherein the raw milk exhibited 284,000,000 cells/mL and 440,000,000 cells/mL respectively and the pasteurized milk had too few cell colony forming units to even count. Unpasteurized milk is not healthy for people to drink. For example, in a study performed in December of 2001, the bacteria Campylobacter jejuni, a microaerophilic bacteria commonly found in animal feces, was found in unpasteurized milk at an organic dairy farm in Wisconsin and caused 75 people, ages 2 to 63, to become ill. 4) Therefore, pasteurized milk is essential for ensuring good quality, nearly bacteria-free drinkable milk. REFERENCES 1. BioSci 101, Section 810 – PowerPoint Lab 9A 2. http://www. foodsci. uoguelph. ca/dairyedu/pasteurization. html 3. BioSci 101, General Survey of Microbiology Laboratory Supplement Fall 2012 4. http://foodsafety. ksu. edu/articles/1138/Raw_Milk_Outbreak_Table. pdf

The Importance Of Adolf Hitler - 1480 Words

Ever wonder how a man can rise in power and almost take over the world? Hitler almost took over the world and did it ruthlessly to get where he got. How do you get to be a supreme leader from being a lowly citizen? It may seem impossible, but if you’re in the right place at the right time, speaking your mind and others agree, you could rise to the top. Adolf Hitler did just that and became to be one of the most corrupt and malicious dictators of all time. Hitler’s leadership was vitally important in his time of reign in Germany because with the amount of power he gained, he had taken advantage of his own German government and as he continued, he sought to make for world domination. Like everybody in the world, people need a beginning.†¦show more content†¦He gave them each of these necessities as promised and because he had succeeded doing these things, people followed him. His second step was to take the land back from the European countries that had even a little bit of German ancestry or history. He was looking for a German world to create. Hitler has said to want to â€Å"protect† all German people and countries. His goal for German nationalism was his drive or motivation to do these things. Of course, his last step was to succeed world domination. He would just create more military and take more land until he could be stopped. German nationalism is the pride and showing of German heritage and union of Germany. This was one of Hitler’s main goals to prevail in a small way. He talked about taking over any land that was once inhabited by Germans. This meant places like Austria and Czechoslovakia. Hitler was very anti-semitic and used propaganda to encourage others to turn anti-semitic. His hatred for Jews was very unfortunate to the Jews. Hitler’s life had many events including Jews. When Hitler was younger, he applied for an art school but was rejected by the man in charge of the school. This man was a Jew and applied fuel to his hate fire. The famous â€Å"Book Burning† was an event that occurred on May 10th, 1933 which encouraged a cleansing of literature and the burning included the books of the Jews. Hitler did not believe the beliefs of Jews or Christianity. OnShow MoreRelatedThe Importance Of Adolf Hitler1214 Words   |  5 Pages Hitler- a well known man during WWII and now- was an extremely significant leader of history all around. At the time being Germany did not realize nor notice what was wrong with Adolf Hitler’s way of leading. In fact, in the beginning they were willing to follow him and all of what he had spoken out for. However, that didn’t change the fact that there were still downsides to what he convinced others to believe in and what he wanted as a leader. 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