by Dinesh Thakur Category: Security

• Signature is the proof to the receiver that the document comes from the correct entity. The person who signs it takes the responsibility of the content present in the document.

• A signature on a document, when verified, is a sign of authentication; the document is authentic.

 
by Dinesh Thakur Category: Security

• Message authentication ensures that the message has been sent by a genuine identity and not by an imposter.

• The service used to provide message authentication is a Message Authentication Code (MAC).

 
by Dinesh Thakur Category: Security

• Security Hash Algorithm (SHA) was developed in 1993 by the National Institute of Standards and Technology (NIST) and National Security Agency (NSA).

 
by Dinesh Thakur Category: Security

• There are a number of popular message digest algorithms known as MDn for various values of n.

• MD5 is the most popular and is fifth in a series of message digests designed by Ronald Rivest.

 
by Dinesh Thakur Category: Security

• Cryptography is a technique to provide message confidentiality.

• The term cryptography is a Greek word which means "secret writing".

 
by Dinesh Thakur Category: Security

Network security can provide the following services related to a message and entity.

 
by Dinesh Thakur Category: Security

• Computer Security means to protect information. It deals with prevention and detection of unauthorized actions by users of a computer.

• In simple words security is defined as "Protecting information system from unintended access"



 
by Dinesh Thakur Category: Security

A firewall is a device installed between the internet network of an organization and the rest of Internet. When a computer is connected to Internet, it can create many problems for corporate companies. Most companies put a large amount of confidential information online. Such an information should not be disclosed to the unauthorized persons. Second problem is that the virus, worms and other digital pests can breach the security and can destroy the valuable data.



 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.