Cryptography has a powerful tool used with computers and the computer network security. This paper will explore the threats, the can and cannot do the threats, system design, implementation, state of security, etc. All systems using cryptography for authentication and privacy with the strongest cryptographic can still be vulnerable with upstream and downstream threats. The secure session of the authentication will require the secure user to have authentication and secure computer authentication. After reading Why Cryptography Is Harder than It Looks, Bruce Schneir explained it very well making it easy to understand why you need to use it.
My project mainly focuses on relatively new field of study in Information Technology known as cryptography. This topic will take an in-depth look at this technology by introducing various concepts of cryptography, a brief history of cryptography and a look at some of the cryptography techniques available today. This will have a close look at how we can use cryptography in an open-systems environment such as the Internet, as well as some of the tools and resources available to help us accomplish this. 1.1 Problem Statement: When data of three different files image, video, or audio when sent directly to the receiver end, we have a problem of hacking and misuse of the data. In today’s life Data hackers are becoming more common.
They were developed by some hi-tech company and sold, or you can choose some free service. Actually, when you are using the web browsers, emails, or even the basic system, your information has been automatically encrypted. Basic principle The basic of data encryption is cryptography science. Cryptography has a long history w... ... middle of paper ... ...w encryption works” http://computer.howstuffworks.com/encryption8.htm 4. Martin, Frank.
Data Encryption Shiqi Luo(701794770) The definition and importance of data encryption Data encryption refers to the process of transforming electronic information into a scrambled form that can only be read by someone who knows how to translate the code. In nowadays business world, it’s the easiest and most practical way to secure the information that we stored and processed, and it’s significant for our sensitive information. For example, as electronic commerce is popular now, the vendors and retailers must protect the customers’ personal information from hackers or competitors. They also have many business files or contracts that need to be strictly protected. Without data encryption, these important information may fall into wrong hands and be misused by others.
Only the authorised user can access the data. If any unauthorised person gets the data intentionally or by mistake then he cannot get the original data. In , they have addressed the secure hybrid framework to ensure the data security in cloud computing, which comprises public key algorithm RSA, private key algorithm AES and SHA algorithm which is used to convert arbitrary sized message into hash code with the help of hash function. They have integrated digital fingerprint mechanism to enhance the authenticatio... ... middle of paper ... ... is generated using secure hash algorithm which is combined with digital signature to form a concatenated string. This concatenated string is then encrypted with the help of public key of receiver and sent to the cloud user who requested data.
Because in the decryption process the MAC is only verified only when the padding is validated. During this attack, depending upon the message errors occurred in the decryption the attacker predicts the message without knowing the key, while executing for several number of times and he will be successful . When an estimation is done on how much time has taken to extract the plaintext block is in the range of 2^23 TLS sessions. What is padding oracle attack? In a symmetric key encryption the padding oracle attack is most commonly done which is considered as a “Timing side-channel attack” where the attacker knows whether during the encryption process the padding is done and executed correctly or not.
 ECC can be used with SSL scheme, certificates, Diffie-Hellman key agreement, El-Gamal and protocols such ECDSA (Elliptic Curve Digital Signature Algorithm). This could lead ECC to be a major tool/element of tomorrow’s cryptology. While ECC has not been as extensively researched as RSA, to date all research has confirmed ECC to be secure.  Elliptic curve operations: The How part Discrete log cryptosystems are typically descr... ... middle of paper ... ...pute u1 = h(m)w mod n and u2 = r w mod n. 5. Compute u1 P + u2 Q = (x0 , y0 ) and v = x0 mod n. 6.
Cryptography has seen a recent rise in popularity due to the expanding nature of communications technology, the Internet, and the inherent security needs of such systems. Cryptography has many practical uses besides providing a code for secret communications. A major contributor to the many current applications of cryptology is the status of computers. Cryptology provides the tools to create a large-scale network of individuals who can communicate with each other confidentially without the threat of an unintended party being able to receive the transmission. The electronically intangible nature of e-mail messages makes them particularly susceptible to attack.
Each authenticator possesses a special symmetric key that is combined with an algorithm to create rapid one-time passwords (OTP). The OTP’s are stored in the Authentication Manager server for optimal security. OTP’s are established and known to the user – the PIN acts as a back-up layer which makes it extremely difficult for hackers to exploit. Strengthening vulnerabilities in access control mechanism with a layered technology, makes SecurID access keys a worthwhile product. So What Despite RSA’s specialization in IT security products for top organizations world-wide, on March 17, 2011 the company fell victim to a common cyber-attack leaving client’s and RSA’s IS infrastructures vulnerable to further exploits.
Data encryption is the key role in current and future technologies. Many public key cryptography algorithms were presented depending on a specific mathematical problem. It is desired to communicate data with high security over insecure network. Due to sensor technology biometrics has lead to rising concerns about the network security, privacy, trust issues and accuracy. Hence, securing biometric template in public network is great challenge.