Computer security and cryptography essay example

Various methods of identity proofing are available ranging from in person validation using government issued identification to anonymous methods that allow the claimant to remain anonymous, but known to the system if they return.

The problem is to determine which tests are sufficient, and many such are inadequate. This is not the same thing as referential integrity in databases, although it can be viewed as a special case of Consistency as understood in the classic ACID model of transaction processing. In database normalization, it is the central, defining function to the discipline.

The function of identification is to map a known quantity to an unknown entity so as to make it known. If no one is regularly reviewing your logs and they are not maintained in a secure and consistent manner, they may not be admissible as evidence.

Confidentiality is necessary but not sufficient for maintaining the privacy of the people whose personal information a system holds.

Cryptography - Essay Example

The subject can Read file contents List directory contents Write W: Even though authorization cannot occur without authentication, the former term is sometimes used to mean the combination of both. If your authentication request is approved, you become authorized to access the accounts of that account holder, but no others.

Authenticators are commonly based on at least one of the following four factors: Most modern operating systems define sets of permissions that are variations or extensions of three basic types of access: Something you have, such as a smart card or security token. Authorization determines what a subject can do on the system.

A basic requirement for identification is that the ID be unique. 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.

Authorization, on the other hand, involves verifying that an authenticated subject has permission to perform certain operations or access specific resources.

Something you are, such as fingerprint, voice, retina, or iris characteristics. This applies especially to information stored in databases. Authorization applies to subjects. IDs may also be built out of a collection of quantities such that they are unique on the collective.

Authorization The process of authorization is sometimes mistakenly thought to be the same as authentication; many widely adopted standard security protocols, obligatory regulations, and even statutes make this error.

For example, a credit card transaction on the Internet requires the credit card number to be transmitted from the buyer to the merchant and from the merchant to a transaction processing network.

Giving out confidential information over the telephone is a breach of confidentiality if the caller is not authorized to have the information. This assumes that only the owner of the account knows the password or PIN needed to access the account.

Cryptography and Computer Security - Essay Example

Something you know, such as a password or a personal identification number PIN. 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.

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.

Where you are, for example inside or outside a company firewall, or proximity of login location to a personal GPS device. Breaches of confidentiality take many forms.

Certain concepts recur throughout different fields of security: This section discusses their use. The only requirements for the identifier are that it must be unique within its security domain.

High availability systems aim to remain available at all times, preventing service disruptions due to power outages, hardware failures, and system upgrades. 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.

For example, when you show proper identification credentials to a bank teller, you are asking to be authenticated to act on behalf of the account holder.

It is also important for authenticity to validate that both parties involved Authentication is the act of establishing or confirming something or someone as authentic, that is, that claims made by or about the subject are true. The system attempts to enforce confidentiality by encrypting the card number during transmission, by limiting the places where it might appear in databases, log files, backups, printed receipts, and so onand by restricting access to the places where it is stored.

Identification is the capability to find, retrieve, report, change, or delete specific data without ambiguity. Integrity is violated when a message is actively modified in transit.

Computer Security and Cryptography Essay

Security experts argue that it is impossible to prove the identity of a computer user with absolute certainty.Security and Cryptography of hacker attacks on personal computers and web sites only highlights the inherent vulnerability of the current computer and network infrastructure. Adequately addressing security and privacy concerns requires a combination of technical, social, and legal approaches.

Examples List on Computer Cryptography

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.

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. The Evolution Of Cryptography Information Technology Essay.

Print Reference this. Disclaimer: This work has been submitted by a student. This is not an example of the work written by our professional academic writers. “Introduction to Computer Security”, Addison-Wesley,ISBNISBN

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Computer security and cryptography essay example
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