Steganography powerpoint templates

Eye sees black and white, night vision, with rods Intensity is on vertical axis, ranging from low black to high white Ising Model. Design of Secure Steganography - Alice. Eggers: Design of Secure Steganography. General Considerations ST-SCS watermarking. Modelbased Steganography - How can we achieve this maximum capacity?

Methods Of Hiding Data To human eyes, Steganography - PoV pairs of value 4,-3 , -2,-1 , 0,1 2, Advanced Steganography Do you have PowerPoint slides to share? Newt is upset because he thinks he is President. Marjie T. Britz, Computer Forensics and Cyber Crime, Steganography - First letter of each paragraph.

Security via obscurity. Has some important advantages, specially when steganography is combined with cryptography Steganography - Has the words 'this is a test' hidden in the photo. Invisible Inks. Organic inks. Developed inks Investigating Steganography in images, analysis of data hiding methods, attacks Approaches in Steganography - Approaches in Steganography.

Classic Prisoner Communication Problem. Passive Warden Wants to extract and exploit embedded data an intractable problem? Modelbased Steganography - How can we achieve this maximum capacity? LeastSignificant Bit Steganography and Steganalysis - Steganography is the science of embedding communications into other 'un-assuming' Allows the steganographer to be more discriminating about what data is changed Lecture 8 Steganography - Cher.

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They are all artistically enhanced with visually stunning color, shadow and lighting effects. Many of them are also animated. Introduction to Steganography - Introduction to Steganography Decoding from an Image While there are more bits in the message PowerPoint PPT presentation free to view. Encryption, Cryptography, and Steganography: - Types of Cryptography. Hash Functions: no key, 'digital fingerprint' of a larger document Steganography: Other Examples.

FBI Methods of Introduction to Cryptography - Alice chooses a between 2 and p-2 and computes. November 27 Steganography lecture. Given by Laura Walters. The different techniques to use Steganography An example of hiding a code within a text would be writing a paragraph of words and isolating every tenth word to be in your message. This technique started in Greece and ancient Romans would used wax covered tablets to send secret messages for military purposes.

Steganography is used for many good reasons and very bad reasons as well. Some good ways that steganography is used is by trying to protect data from theft. It is also used for one-way hash functions which is usually for security or management purposes. AUDIO Bad Reasons to use Steganography If a terrorist was trying to hide a secret message into a picture they would have to embed this code into the picture themselves. Typically they would do this through some type of steganography software.

The whole point of using this technique is to hide the message they are trying to send and to not draw attention to the picture. Say the terrorists use an Least Significant Bit Encoding method.

This is where they would encode the message in the least significant bit of every in the image. The pixel is changed a little bit but no enough to change the picture. The image looks identical to our eyes. A 24 bit image would look very suspicious sense it would be so large but to make it look normal they would have to use a color image where i byte is used for each pixel.

Steganography is used by all sorts of people. It can be used by computer programers, terrorist, military, or even criminals. Computer programers may be trying to make some type of security on their computer. Terrorists could be sending out a secret attack against someone. The military could be sending orders on an attack.

Criminals could be hiding evidence or could be sending messages to law enforcement. Steganography is used in all different ways Westphal, Kristy. Oracle Foundation, n. Who uses Steganography? People can use it to steal data by concealing it in another file and sending it out in an email or file transfer It can also be used for Terrorist purposes for communication. Also criminals trying to hide evidence can use this technique. Going from wax tablets to computers is a huge advancement for this strategy and coding has become something more common in our generation.

Learning Steganography can be something fun but it can also be something that people have to take very seriously. The Hisotry of Steganography. Transcript: 1. To hide an image inside another, the image which will be hidden needs to have at most the same size of the image which will hide it. To reveal an image the same code is required with the additional knowledge of knowing how many bits were used to hide the image.

Presented by: Soha Khalid Thank you for listening. Finally, we convert the new binary value to a decimal value: How it works 2.