Computer security and cryptography essay example

The subject can change the contents of a file or directory with the following tasks: If the file is a program, the subject can cause the program to be run.

Permitting someone to look over your shoulder at your computer screen while you have confidential data displayed on it could be a breach of confidentiality.

Certain concepts recur throughout different fields of security: Giving out confidential information over the telephone is a breach of confidentiality if the caller is not authorized to have the information. If your authentication request is approved, you become authorized to access the accounts of that account holder, but no others.

The problem is to determine which tests are sufficient, and many such are inadequate. In database normalization, it is the central, defining function to the discipline.

More than three failed logon attempts in a given period Any attempt to use a disabled user account These reports help a system administrator or security administrator to more easily identify possible break-in attempts. Something you know, such as a password or a personal identification number PIN. This assumes that Computer security and cryptography essay example the owner of the account has the necessary smart card or token needed to unlock the account.

Authenticators are commonly based on at least one of the following four factors: This assumes that only the owner of the account knows the password or PIN needed to access the account. This means that the computing systems used to store and process the information, the security controls used to protect it, and the communication channels used to access it must be functioning correctly.

IDs may also be built out of a collection of quantities such that they are unique on the collective. Authorization applies to subjects. Authentication, therefore, must precede authorization.

Subsequently, the entity asserts an identity together with an authenticator as a means for validation. This might involve confirming the identity of a person, tracing the origins of an artifact, ensuring that a product is what its packaging and labeling claims to be, or assuring that a computer program is a trusted one.

The only requirements for the identifier are that it must be unique within its security domain. If an unauthorized party obtains the card number in any way, a breach of confidentiality has occurred. Most modern operating systems define sets of permissions that are variations or extensions of three basic types of access: It is only possible to apply one or more tests which, if passed, have been previously declared to be sufficient to proceed.

More Essay Examples on Computer security Rubric The term computer system security means the collective processes and mechanisms by which sensitive and valuable information and services are protected from publication, tampering or collapse by unauthorized activities or untrustworthy individuals and unplanned events respectively.

These systems can protect either the whole computer — such as through an interactive logon screen — or individual services, such as an FTP server.

A basic requirement for identification is that the ID be unique. Many systems can generate automated reports based on certain predefined criteria or thresholds, known as clipping levels. These rights and permissions are implemented differently in systems based on discretionary access control DAC and mandatory access control MAC.

Even though authorization cannot occur without authentication, the former term is sometimes used to mean the combination of both. The information recorded should be sufficient to map the subject to a controlling user. However, authentication is the process of verifying a claim made by a subject that it should be allowed to act on behalf of a given principal person, computer, process, etc.

This applies especially to information stored in databases.

Computer Security and Cryptography Essay

The strategies and methodologies of computer security often differ from most other computer technologies because of its somewhat elusive objective of preventing unwanted computer behavior instead of enabling wanted computer behavior.

The function of identification is to map a known quantity to an unknown entity so as to make it known. For example, a clipping level may be set to generate a report for the following:Information Security Essay 15 Cryptography Encryption Standard (DES) serves as an example of a product ci-pher whose strength derives simply from repeated applications of topic is the integration of computer and communications secu-rity.

Cryptography Security and Cryptography of hacker attacks on personal computers and web sites only highlights the inherent vulnerability of the current computer and network infrastructure.

Cryptography and Computer Security - Essay Example

Adequately addressing security and privacy concerns requires a combination of technical, social, and legal approaches. Cryptography and Computer Security [Name] [Course Title] [University] [Instructor Name] [Date] Cryptography and Computer Security Security in the general contex. Cryptographic Techniques For Network Security Cryptography Computer Science Essay.

Print Reference this. for example, if Eve has access to Alice computer. She can choose some plaintext and intercept the created ciphertext. Computer Science Essay Writing Service Free Essays More Computer Science Essays Examples of Our Work.

Computer cryptography is quite a rare and popular topic for writing an essay, but it certainly is in our Cryptography and Computer Security Cryptography and Computer Security Security in the general context refers to protect anything from getting stolen or damaged.

The first example of computer security can be seen when the. The first example of computer security can be seen when the computerized switchboard was introduced to protect hardware from external damage in Then security was developed to protect remote computing and this was done by developing the modem.

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Computer security and cryptography essay example
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