was fascinated by programming subjects such as C, OOPC and Data Structures. During my third year I also learned Java and Theory of Computation. During the fourth year, I was fascinated by subjects such as computer networks, network security and encryption algorithms like
Jefferson Wheel Cipher: During 1700’s Thomas Jefferson invented a cipher system that is almost similar to Vigenere cipher but with improved security. The system had 26 wheels with alphabets that are randomly scattered on them. The key for the system is having the wheels in ascending order. The cipher text is any other line found by aligning the wheel with a line that has the plain text or message. While decrypting the message the cipher text are aligned first then the all other lines are scanned
Carnivore: Chewing Through Our Right to Privacy The debate around Carnivore is not really about Carnivore itself. It is more of a debate of whether or not Carnivore oversteps current privacy laws and the Fourth Amendment. Carnivore is a software program that enables the FBI to filter and collect email on a subject of a court order to be used as evidence. The issue around Carnivore started when the ACLU and other such groups demanded a review of the system in 2000. Since then, there has been
ENCRYPTION COSC 111 5/7/2013 Cam 2 ABSTRACT In this research paper I want to shed light on encryption. After careful research it becomes clear that encryption has been around for centuries and used in various ways. There are two distinct methods of encryption: Public Key and Private Key. Each comes with its own set of pros and cons but Private Key is the more widely used method. Laws have been put into place to sanction the use of encryption products and devices. Information has been
symmetric encryption (also called secret key encryption) and asymmetric encryption (also called public key encryption). Symmetric algorithms are faster, but the main problem associated with this algorithm is key distribution. On the other hand, asymmetric encryption eliminates key security problem, but these algorithms take too much time for encryption and decryption. Certain systems use asymmetric encryption for secure key exchange joined with symmetric algorithms for rapid data encryption. One of
Encryption Encryption refers to the translation of data into secret serial characters. It is the most successful medium to achieve security of data. To access an encrypted file or data, a user must have the secret key or password to allow the entry to the data for decryption. Encrypted data is called cipher text whereas an unencrypted data is referred to as plain text. Encryption is a key solution to mitigate potential corruption without fault. Many resolutions to problems are large enough to ensure
settings, was eventually broken by the Allies and used against the German Nazis as an advantage. And to show how confident the Germans were with this machine, until recently they still had no idea that the Allies had even cracked their code. Another encryption machine that was popular during WWII was the the Japanese 97 - shiki O-bun In-ji-ki known by the United States as “Purple.” The machine ... ... middle of paper ... ...ce and from that you could get small sections of the encrypted messages, and
Possible Side Channels attacks are with: power, time, faults, electro-magnetic radiations, sound, scan chains. d) For any RSA public/private key triple, (e, d, n), the key mathematical fact is that the encryption and decryption functions are inverses of one another. That is, if f(m)=me mod n is the encryption function (which is public) and g(m)=me d mod n is the decryption function (which is private), then, f(g(m))= m and g(f(m))=m The idea behind a digital signature using RSA is that f is a function that
content owner encrypts the original uncompressed image using an encryption key. Then, a data-hider may compress the least significant bits of the encrypted imageusing a data-hiding key to create a sparse space to accommodate some additionaldata.With an encrypted image containing additional data, if a receiverhas the data-hiding key, he can extract the additional data thoughhe does not know the image content. If the receiver has the encryption key,he can decrypt the received data to obtain an image similar
The private key is used to encrypt the messages personally and will not be seen or shared by any other user. Whereas the public key is used again for the same reason as of encryption but is hidden from others except our self. The encryption of the data by a public key can be also decrypted by the private key. Open PGP Encryption Generate new PGP Key Enter email and name of the user to generate a particular key. More emails can be added to it. Advanced modification on the PGP can be defined using
If the encryption is performed on a message size of few bits, the size of the ciphertext may expand and will cause loss of compression efficiency. 2) If the encryption is done on a large message size of few hundreds of bits, to compensate the loss in compression, the payload capacity decreases, where payload capacity is the number of watermark signal bits embedded per encrypted message. So we select a secure symmetric stream cipher with homomorphic property over secure asymmetric encryption with homomorphic
Missing Chart Encryption 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
Encryption Data encryption refers to the transformation of data into a structure that makes it unreadable by anyone without a secret decryption key. It ensures that messages can be read only by the planned recipient. Encryption is the procedure of obscuring information to create it unreadable without special information. Only organizations and individuals with an abnormal need for secrecy have actually made good use of it. Nowadays, encryption is one of the most important technologies for maintaining
Protocols are a common focus of attack because of the number of devices that can be targeted. Devices made by different vendors are able to communicate and work with each other because of standard protocols that allow them to understand each other. The wide use of these protocols makes them an appealing target to attackers. If a flaw can be found in a popular protocol, then many devices made by different vendors will be vulnerable to the attack. There are a number of different protocols over the
Privacy in Cyberspace Computers and the Internet have changed many things in the world today. People surf the web on a daily bases for information and entertainment. The Internet is making things like paying your bills from home a possibility. This was something that you had to leave the house to do, even if it was just dropping a check in the mail. Now you can pay your bills and buy your groceries, with every thing being just a point and a click away. Other things that can be done on the Internet
This paper is going to discuss wireless security from a broad view where I will go into why exactly wireless security is so important especially today as the ways in which we are communicating is changing dramatically. From there I will discuss the multiple wireless securities that are available to give a better understanding of the options given. Then I will go into why exactly not protecting your wireless can be so dangerous with some descriptions on the most dangerous wireless attacks out there
Introduction Steganography is the art of hiding or concealment of secret information within an ordinary message or file. The purpose is to hide the existence of this information from a third party so as to covertly pass messages along without being detected. (1) Throughout this report, we will discuss what a digital forensics investigator should know in relation to Steganography in electronic communication. We will talk about the history of steganography and then discuss how steganography techniques
INDEX 1. Introduction 2. Type of Attack in ATM 3. Replay Attack in ATM 4. Counter Measures for Replay Attack :-RIPSEC Protocol[3] 5. References Introduction In present era, with rapid growth of banking and financial system throughout the world.Currently there are more than 730 million Debit/Card circulating throughout the world. Evesdroppers or Cyber-thief comes with new measures/attack to perform fraudulent transactions. It has been very necessary to come up
Throughout this course many software packages have been discussed as far as their usefulness and application in a computer forensics environment. I have chosen to write about encryption, as well as anti-spyware software. Specifically I will discuss TrueCrypt and Spybot – Search and Destroy. TrueCrypt is a freely available disk encryption package. It is also open-source, which allows independent developers to legally change/modify and/or expand upon the software at their discretion, so long as all applicable
a standard computer could take many thousands of years to try all of the potential 128-bit long keys. In response to the increasing resistance of encryption designs to these brute force attacks, security researchers have identified more complex methods of attack on encryption which use the analysis of physical characteristics to obtain the encryption key (Liu, Chang, & Lee, 2012). These methods are known collectively as side channel