Threats Of Cryptography And Steganography

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.

The Internet is a global public network and it is the Universal source of information. It has become a popular medium for commercial activities. Millions of dollars of transactions occur daily in many financial organizations through Internet. The internet along with digital technologies has taken human life into much higher levels of sophistication and ease. The growth of Internet has brought about great benefits to the modern society; meanwhile, the rapidly increasing connectivity and accessibility to the Internet has posed a security threat. With the tremendous growth of network-based services and sensitive information on networks, network security is getting more and more import than ever. The attacks on the Internet have become both more prolific and easier to implement because of the ubiquity of the Internet and the pervasiveness of easy-to-use operating systems and development environments.

Steganography is an ulterior, and lesser-known approach to private communication. Steganographic applications work by taking in three things: a cover work; this could be a picture, an audio file, a video file, etc., a message to be embedded, and a stego key; we don’t always use one but if we do it is much like an encryption key. Steganography applications will then embed the message into the cover work. This is most commonly performed using a method known as LSB embedding, which I will explain in detail.

Steganography is derived from the greek words stego which is known as cover and grafia which is known as writing which is combinedly known as “covered writing”. It is also defined as the art and science of communication in such a way that it hides the existence of the communication. In contrast to cryptography, steganography hides message inside other harmless message in such a way that the enemy connect detect that there is a hidden message inside the cover message.

The process behind Visual Cryptography allows messages to be contained in seemingly random shares. The generation of these

With the advancement of technology, society is starting to rely heavily on electronic devices more now than ever. With the heavy reliance on electronic devices, security becomes a must to ensure that information is not falling into the wrong hands. As security becomes an important factor in computing, cybersecurity arose to help protect computer systems and the data stored on it from being accessed by people for whom the data was not intended. Many high profile attacks have been noted in the past either by accident or intentionally trying to cripple and/or destroy a system. Attacks have also been reported with the goal of gathering data to be used in a malicious manner. These attacks can happen a number of different ways and the attackers are always looking for a flaw in the system that they can exploit to achieve their end goal.

Steganography is the art of secret communication. Its purpose is to hide the very presence of communication as opposed to cryptography whose goal is to make communication unintelligible to those who do not possess the right keys. Digital images, videos, sound files, and other computer files that contain perceptually irrelevant or redundant information can be used as “covers” or carriers to hide secret messages. After embedding a secret message into the cover-image, a so-called stego-image is obtained. It is important that the

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.

Thus by only knowing what the cipher was, one would know what the original message was. Early ciphers were primitive and involved the manipulation of the characters in a message. A transposition and substitution cipher was very common in the classical age before computers. A transposition cipher involved merely arranging the letters in a message while a substitution cipher involved changing the letters in a message to a different one in the alphabet or to a symbol. Julius Ceasar used a form of substitution cipher in which he simply changed the letter to its respected position three spaces in front of it in the alphabet. As one can imagine, such a cipher was easy to break just from analyzing the ciphertext, and thus more complicated ciphers involving mathematical theory were created. However as the advancement of cryptography continued, so did its contrary field of cryptanalysis, the interpretation of protocols. This arrived at the discovery of frequency analysis; the process in which the repetition of certain characters in a language is greater than those of other characters. Thus the frequency of certain meaningless characters in a ciphertext would be higher than those of other ones. This meant that a new method of encrypting messages had to be invented as any cipher could be broken. This new method involved putting a private key ( a string of characters) into the cipher so that

From the codes messages passed furtively throughout the courts of medieval Europe, to the infamous Enigma cipher machine which protected Nazi secrets in World War II, the concept of cryptography is nearly as old as the written word itself. Today, the field of information technology has developed to the point that even the most sophisticated encryption methods are vulnerable, and for those working as information security officers, shielding a company's invaluable data through the use of encryption has become an essential skill. Modern encryption methods rely on much of the same techniques used throughout history, with human readable plaintext being transformed into an unreadable format known as ciphertext upon transmission between two parties, in effort to prevent nefarious third-party intrusions. Within the sub-field of cryptanalysis a growing focus on mathematical theory has spawned the development of intricately constructed algorithms, or governing systems used to precisely define a sequence of operations (Layton, 2007). Modern cryptographic algorithms are capable of creating computationally secured systems that, while they can be theoretically deciphered, are ostensibly secure from any feasible attack strategy. The most widely applied cryptographic algorithms employed by information security officers today typically fall under one of two categories: Symmetric-key cryptography and Public-key cryptography (Peltier, Peltier & Blackley,

Steganography is the act of changing the digital media in a way that only sender and the intended recipient is able to detect the message sent through it.

steganography and cryptography are distinctive sorts of strategies utilization to send secure information transmission. Steganography is the craftsmanship and art of concealing information into distinctive bearer records, for example, pictures, features, sound, content and so forth. In cryptography, there is parcel of degree to discover mystery message that we send by outsider

These can be avoided by making use of our proposed system. The mechanism, which is used to hide the information in the image files [11]. Here, to make the solution on the problems mentioned above, we have proposed the Advanced Video Steganography technique. This advance method consist of the combination of Compression, Encryption and Embedding technique, which is mentioned in our proposed system.

The Internet continues to grow exponentially. Personal, government, and business applications continue to multiply on the Internet, with immediate benefits to end users. However, these network-based applications and services can pose security risks to individuals and to the information resources of companies and governments. Information is an asset that must be protected. Without adequate network security, many individuals, businesses, and governments risk losing that asset.

Objectives of my Final Project: In my undertaking I principally focused on the information security issues when sending the information over the system utilizing steganographic procedures. The principle destinations of the task are