Internet Security Essay -- essays research papers

gage on the Internet How do you secure something that is changing faster than you pile fix it? The Internet has had security measure problems since its earliest days as a pure research project. Today, after several years and orders of magnitude of produce, is nonoperational has security problems. It is being used for a purpose for which it was never intend commerce. It is somewhat ironic that the early Internet was design as a proto typesetters case for a high-availability command and control network that could resist outages resulting from confrontation actions, yet it smokenot resist college undergraduates. The problem is that the gusters atomic number 18 on, and make up isolated of, the network they atomic number 18 attacking. Designing a system that is capable of resisting attack from within, while still growing and evolving at a breakneck pace, is believably un occupyed. Deep infrastructure changes argon needed, and once you have achieved a certain(a) amount of si ze, the sheer inertia of the installed base may make it impossible to apply fixes. The challenges for the security industry are growing. With the electronic commerce banquet over the Internet, there are issues such as nonrepudiation to be solved. financial institutions will have both technical concerns, such as the security of a credit card number or banking information, and legal concerns for place individuals responsible for their actions such as their purchases or sales over the Internet. publication and management of encryption keys for millions of users will pose a new type of challenge. While some technologies have been developed, only an industry-wide effort and cooperation can calumniate risks and ensure privacy for users, data confidentiality for the financial institutions, and nonrepudiation for electronic commerce. With the continuing growth in linking individuals and transactiones over the Internet, some social issues are starting to surface. The hostel may take conviction in adapting to the new concept of transacting business over the Internet. Consumers may take time to trust the network and accept it as a substitute for transacting business in person. Another sectionalization of concerns relates to restricting access over the Internet. Preventing distribution of pornography and other offensive material over the Internet has already been in the news. We can anticipate new social hurdles over time and hope the spectacular benefits of the Internet will continue to ove... ...o that its confidentiality and integrity are preserved. That is, the data stay secret to those who do not posses the secret key, and modifications to the cipher text can be detected during decryption. Two of the well-nigh popular symmetric ciphers are the Data Encryption Standard (DES) and the International Data Encryption algorithmic rule (IDEA). The DES algorithm operates on blocks of 64 bits at a time using a key length of 56 bits. The 64 bits are permuted acc ording to the value of the key, and so encryption with two keys that differently in one bit produces two completely different cipher texts. The most popular mode of DES is called Cipher Block Chaining (CBC) mode, where output from preceding(prenominal) block are flux with the plaintext of each block. The first block is mixed with the plaintext of each block. The block uses a special value called the Initialization Vector. patronage its size and rapid growth, the Web is still in its infancy. So is the software package industry. We are just beginning to learn how to develop secure software, and we are beginning to understand that for our future, if it is to be online, we need to incorporate security into the staple underpinnings of everything we develop.