Internet Security Essay -- essays research papers

Security on the Internet How do you secure something that is ever-changing faster than you can fix it? The Internet has had security problems since its earliest eld as a pure research project. Today, after several historic period and orders of magnitude of growth, is still has security problems. It is being used for a settle for which it was never intended commerce. It is somewhat ironic that the early Internet was flesh as a prototype for a high-availability command and control web that could resist outages resulting from enemy actions, yet it cannot resist college undergraduates. The problem is that the attackers argon on, and nominate up apart of, the ne 2rk they are attacking. Designing a remains that is capable of resisting attack from within, while still growing and evolving at a breakneck pace, is probably impossible. Deep infrastructure changes are needed, and once you ware achieved a certain amount of size, the sheer inertia of the installed base may make it impos sible to apply fixes. The challenges for the security industry are growing. With the electronic commerce spreading over the Internet, there are issues much(prenominal) 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 holding individuals responsible for their actions such as their purchases or gross revenue over the Internet. Issuance and management of encryption keys for millions of users will pose a youthful type of challenge. While some technologies have been germinateed, only an industry-wide attempt and cooperation can minimize 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 businesses over the Internet, some social issues are starting to surface. The society may take period in adapting to the new concept of transacting business over the Internet. Consumers may take time to institutionalise the network and accept it as a substitute for transacting business in person. Another class of concerns relates to restricting access over the Internet. Preventing distribution of pornography and other objectionable material over the Internet has already been in the news. We can expect new social hurdles over time and hope the great benefits of the Internet will continue to ove... ...o that its confidentiality and integrity are preserved. That is, the data remains secret to those who do not posses the secret key, and modifications to the zero point text can be detected during decryption. Two of the most usual symmetric ciphers are the info Encryption Standard (DES) and the International Data Encryption Algorithm (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 according to the regard as of the key, and so encryption with two keys that contrastingly in one bit produces two completely different cipher texts. The most popular mode of DES is called Cipher oppose Chaining (CBC) mode, where output from previous block are mixed with the plaintext of each block. The prototypal block is mixed with the plaintext of each block. The block uses a special value called the Initialization Vector. Despite its size and rapid growth, the Web is still in its infancy. So is the software 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 turn back security into the basic underpinnings of everything we develop.