What is Password Authentication protocol (PAP)
Technology & Science , Web Security / February 22, 2018

In many systems, the user authentication is widely applied and discussed in security services. Password authentication, which is widely used for authenticated method, also is important protocol by requiring a username and password before being allowed access to resources. In an internet environment, a remote user has to obtain the access right from a server before doing any job. The procedure of obtaining access right is called a user authentication protocol. User authentication via user memorable password provides convenience without needing any auxiliary devices, such as smart card. It is very common that a server in a network of resources is used to provide controlled access to the network or to applications residing within the network. Therefore, it is necessary for the server to authenticate the client via username and password. Overview of Password Authentication protocol Password authentication is one of the simplest and the most convenient authentication mechanisms to deal with secret data over insecure networks. It is more frequently required in areas such as computer networks, wireless networks, remote login systems, operation systems, and database management systems. To access resources at remote systems, users should have proper access rights. One of the simplest and most convenient security mechanisms is…

What is Hash based Message Authentication Code (HMAC) in Network Security
Technology & Science / February 21, 2018

Today the Internet has virtually become the way of doing business as it offers a powerful ubiquitous medium of commerce and enables greater connectivity of disparate groups throughout the world. However this medium has its inherent risks. Loss of privacy, loss of data integrity, identify spoofing and denial of service are some of the major threats in the Internet. Two parties communicating across an insecure channel need a method by which any attempt to modify the information sent by one to the other, or fake its origin, is detected. Most commonly such a mechanism is based on a shared key between the parties, and in this setting is usually called a MAC, or Message Authentication Code. Overview of Hash based Message Authentication Code Providing a way to check the integrity of information transmitted over or stored in an unreliable medium is a prime necessity in the world of open computing and communications. Mechanisms that provide such integrity checks based on a secret key are usually called message authentication codes (MACs). Typically, message authentication codes are used between two parties that share a secret key in order to authenticate information transmitted between these parties. This standard defines a MAC that uses…

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