Comparing Cryptographic Techniques And Steganographic Techniques Essay

Utilising cryptography to secure medical images and prevent both tampering and the re-identification requires a two step process involving the insertion of cryptographic algorithms and watermarking onto the image, this is able to completed without amending or hindering the pixel quality and retaining the integrity of the images (Kester et al., 2015). Additionally, the watermark can be encrypted using an advanced encryptions standard (AES) to assist in maintaining patient privacy from being re-identified (Abd-Eldayem,

Elliptic Curve cryptography is a method of encryption that involves the algebraic structure of an elliptic curve. An important observation of an elliptic curve that is drawn is that there is some horizontal symmetry. This allows for plotting from one point to another, then bouncing from the second point down to the reflection of the curve to get a value. The advantage with Elliptic Curve cryptography is that there is no backdoor method to cracking the code and it is harder and takes longer than factoring does with

Information security is a major concept in today’s industrial and computer era, so security must be higher to protect the confidential data. Information security plays major role in computer and network security with the use of different cryptography algorithms that includes the encryption and decryption of data with the uses of the algorithm and the key. By means of text or numerical key for the encryption can be dangerous because with the several hack attacks that a key can be broken. So I have proposed a new mechanism that will replace the text key with the image pixels and can gain high security which cannot be easy to break without prior knowledge.

The aim of this document is to provide an overview on the various cryptographic technologies in use today and what the future might hold. The document will cover the following subjects:

There are many aspects to security and applications, from secure commerce and payment to private communications and protecting passwords. Cryptography, is the practice and study in securing communication between parties in the presence of potential adversaries (Yousuf, N.D.). This report focuses on modern methods of cryptography its operation, strengths and weaknesses, its application techniques in computing and some other aspects where cryptography deemed essential as discussed in this report.

Protecting data through cryptography from unauthorized eyes is a high priority for organizations that store personal information. Cryptography is the process of hiding the real meaning of a message through a pre-determined code that is only known to the person encrypting and decrypting a message. Different forms of cryptography can be seen in our everyday life from the word puzzle in daily newspapers to secretaries writing in short hand. Cryptography has been around since the time of the Egyptians and has made many advances through the years.

Data encryption describes the transformation of plain text into a different format that is meaningless read by human eye without being decrypted, so called cipher text, in order to prevent any unauthorized party to obtain information from the document.

Steganography (literally meaning covered writing) dates back to ancient Greece, where common practices consisted of etching messages in wooden tablets and covering them with wax, and tattooing a shaved messenger's head, letting his hair grow back, and then shaving it again when he arrived at his contact point. Steganography comes from the Greek steganos, or "covered," and graphie, or "writing". Synonymous to abstraction, the art and science of hiding information by embedding messages within other, seemingly harmless messages. Steganography takes cryptography a step farther by hiding an encrypted message so that no one suspects it exists. Ideally, anyone scanning your data

This critical review is to investigate steganographic studies and their methods to either exfiltrate data or defend against data exfiltration. Steganography has one main purpose, to conceal data. Huang’s (2011) method, embedding steganographic data in inactive frames of low-bit rate audio streams went against the norm (Aoki, 2008), (Wu et al., 2006), used active frames of high-bit rate audio streams. Active high-bit rate audio streams have higher least significant bit counts, which presents added frames to conceal steganographic payloads (Huang et al., 2011). Howbeit, Huang (2011) demonstrated a new algorithm he administered to (VOIP) inactive frames of low-bit audio streams, which could carry higher capacity payloads than

To achieve this goal, I have organized my paper into three different sections. Each section will focus on a segment on the history of encryption. In the first section I discuss classical and medieval encryption methods: steganography, and substitution ciphers. In the second section I will exclusively talk about encryption methods used in World War II, such as: Enigma Machine, and JN-25. In the third section I will talk about modern encryption methods: symmetric vs asymmetric key systems. Lastly I will conclude with a finishing paragraph, with my works cited.

If you want to keep information secret, you have two possible strategies: hide the existence of the information, or make the information unintelligible. Cryptography is the art and science of keeping information secure from unintended audiences, of encrypting it. Conversely, cryptanalysis is the art and science of breaking encoded data. The branch of mathematics encompassing both cryptography and cryptanalysis is cryptology.

Encryption is a method of programming data for security so that it appears to be random data. Only the people sending and receiving the information have the key to decrypt the message, which will put it back into its original form making it readable. The only people with the key are the people who are intended to read the message. Not many people know what encryption is. I took a survey of twenty students and asked two questions. The first question I asked was do you know what encryption means and the second question I asked was have you ever heard of anybody using encryption. This is a chart of the information I received:

Mathematical cryptography, as bad as it sometimes is, is the strongest link in most security chains. Our symmetric and public-key algorithms are pretty good, even though they’re not based on much rigorous mathematical theory. The real problems are elsewhere: computer security, network security, user interface and so on. “

Image Steganography: In today’s digital world secret messages get embedded in to the digital image which is called as Image Steganography where cover object used is Image . Because of the limited power of the Human vision system this method is most commonly used [5].

Cryptography is known as the method of writing secrets. The secured data and all of information from any external or internal hacks. Therefore, it provides confidentiality, integrity, authenticity and non-repudiation to secure data. The basic concepts of cryptography will be based on two terms namely plain text and cipher text. Plain text represents the message generated originally and cipher text is the message which is the encrypted text. We would decrypt the encrypted cipher text to get our original message.