ASSIGNMENT

Assignment

Assignment

Task Number 1

Researches in Data Communication Network

There are an extensive amount of researches conducted in the field of data communication, in all the researches the researchers have look to improve the transmission of data between users, by providing them with a secure and efficient medium for the transmission of data, over a present network. Following are some of the researches, which have caught the interest of a lot of people.

Advances in Smartcard Security

A smart card is a multi-purpose card that opens new doors in the field of security, data storage, and energy conservation. Attendance registration, internal payment, biometric storage, identification, intrusion detection, and clothing issue, access to lockers or mailboxes, logical workplace security, control of medical equipment, parking systems, print-on-demand, time management, access and registration of care: the possibilities are endless.

Smart cards currently offer more security and confidentiality of financial information other vehicles or storage forms of transactions, resulting in the perfect solution for ecommerce solutions. A smart card is a safe place to store valuable information such as private keys, account numbers, passwords, or personal information. It is also a safe place to carry out processes that you do not want to be exposed to the world, for example, digital signature. Encryption processes including public or private key. The cards have a power or computer processing (hence intelligent) to provide greater security, allowing verification of the cardholder. Enter a PIN is a method of verification, the biometric procedure, other. The benefit of smart cards is that you can verify the PIN or fingerprint, even 'off-line', disconnected from the networks.

These cards, which are gradually replacing credit cards and magnetic stripe debit, aim to reduce fraud. According to the smart card issuers, they are virtually impossible to clone, unlike magnetic stripe cards. However, researchers at Cambridge University in 2008 showed that it is possible to intercept information transmitted between a smart card and a terminal, which could make cloning possible. These same researchers revealed last month a new flaw: adding a device to a smart card, they can use the card PIN at any retailer, regardless of the original PIN. According to the researchers, it is only a matter of time before criminals take advantage of these weaknesses.

The future of smart cards does not seem too much darker. According to research firm IDC, the European market for this technology is expected to grow 31% per year for the next five years. Globally, growth is expected to be around 40% per year. And we would end up with 3.3 billion cards in circulation in the world in 2005. Since 2003, the vast majority of smart banking cards should follow the standard set by Visa and MasterCard: asymmetric encryption and 1024-bit key. Besides the traditional areas of the Bank and the mobile, it should be frequently found in everything related to network security (Witteman, 2002).

Simulating Large-Scale P2P Assisted Video Streaming

P2P networks are a bootable technology to deliver real-time and video-on-demand services over IP networks. Layered video coding techniques are being introduced due ...