Cryptography

encryption. There are some basic information about this type of cryptography will be reviewed. Then, symmetric cryptography advantages and problems will be covered. After that, comparison on several symmetric algorithms are discussed. These algorithms are DES, Triple DES, AES, RC2, RC4, RC6, and Blowfish. Keywords—Cryptography, Symmetric Encryption, Encryption, Decryption, DES, Triple DES, AES, RC2, RC4, RC6, Blowfish. I. INTRODUCTION Cryptography is an enormous topic, for it has several…

Introduction Cryptography can be defined as the process of encrypting and decrypting data in order to keep the information protected from anyone other than the two (or more) people involved in the communication. Preventing unauthorized users from being able to read the information exchanged over an insecure channel, i.e. maintaining ‘privacy’ is one serious cryptographic problem, which is why it is essential for the communicating parties to share a key that is unknown to others. This key…

Cybersecurity is vital to improving the security and reliability of the Western Interconnection power grid. As one of the most complex and critical infrastructures, the importance of prioritizing the continued security of the power grid should be at the top of the list. There are many different options that can improve security levels of both a physical and logical nature, such as disk drive encryption, digital certificates, Transport Layer Security (TLS), and Virtual Private Networks.…

The article “Quantum Computer Comes Closer to Cracking RSA Encryption” written by Amy Nordrum, shows that Cryptography needs to be important, because of the fast developing of new technology. In her article Ms. Nordrum tells about computer scientists from the MIT which found a way to crack the RSA (Rivest, Shamir and Adleman)-Code. On the fact, that RSA Encryption is used in all our devices it is quite frightening to know that the government is maybe already using this kind of technology for…

mechanism in operating system apply to ensure proper privilege, data integrity and availability. Transferred message over network is essential to put security which means encryption at sending point and decryption in receiving point. Basic idea of Cryptography is to convert original message to encrypted message. Converting can either make the encryption process hidden, so that an intruder remain unknow it Or, can use a known technique and use a hidden key. Some terminology such as Plaintext -…

Roles of Core Technologies in an Effective IT System Technology permeates all aspects of modern civilization. It is woven into the fabric of our daily lives. What was once barriers to knowledge and communication have been stripped down as we are now connected, in an instant, to the farthest reaches of the globe. With every new advancement comes an opportunity to usher in a revolution in how societies live, work, and play. The major players that make it all possible are the men and women who…

Public key infrastructure is the combination of software, encryption technologies and services that enables enterprises to maintain the security of their business transactions on over the internet. It integrates digital certificates, public key cryptography and certification authorities into a complete enterprise-wide network security architecture. It is also defined as a set of roles, policies and procedures needed to create, revoke digital certificates and manage public-key encryption. It is…

using PGP encryption, and its limitation. What is PGP encryption and how does it work? PGP is an abbreviation for “Pretty Good Privacy.” It is a hybrid encryption since PGP is a combination of some best features of both original and public key cryptography. If you encrypt the plaintext using PGP, it firstly compresses the plaintext and by data compression, modem transmission time and disk space are saved. Also, data compression strengthens cryptographic…

the doors for her to get a coveted job as an agent in DCPJ department. Not only did Brown represent Neveu as a well-endowed person in terms of knowledge, but she has also graduated from Royal Holloway, University of London, as a cryptographer. Cryptography is a very intricate field that requires a great deal of knowledge, both secular and religious, about all sorts of subjects in order to be able to decode, break, and unlock codes. As a matter a fact, not anyone can pride with the fact of being…

Cryptographic primitives are basic algorithms that used to create a protocol in the computer. The algorithm is the basic part of designing a encrypting systems. The security level of a computer system depends on the reliable level of the cryptographic primitives. Here is a detailed graphic on what is included and the types of cryptographic primitives in the CNG. Figure 6.1 CNG cryptographic primitives Among all the types of cryptographic primitives, one-way hashing function and encryption…