Authentication – A Brief Introduction to its Diverse Types

Authentication – A Brief Introduction to its Diverse Types

Product Authentication

Product authentication can be a security hologram label on a box of a product for authentication. Counterfeit products are often offered to consumers as being authentic. Counterfeit consumer goods such as electronics, music, apparel, and Counterfeit medications have been sold as being legitimate. Efforts to control the supply chain and educate consumers to evaluate the packaging and labeling help ensure that authentic products are sold and used.

Video Authentication

It is sometimes necessary to authenticate the veracity of video recordings used as evidence in judicial proceedings. Therefore, video authentication is a process which ascertains that the content in a given video is authentic and exactly same as when captured. For verifying the originality of received video content, and to detect malicious tampering and preventing various types of forgeries, performed on video data, video authentication techniques are used.

A video authentication system ensures the integrity of digital video and verifies that whether the given video has been tampered or not. But in most of the cases, especially in the court of law, it may be more beneficial if the authentication system can tell where the tampering happens and how the video is tampered.

Digital Signature

A Digital Signature is a mathematical approach for demonstrating the authenticity of a digital message or document. The purpose of digital signatures is to detect unauthorized modifications of data and to authenticate the identity of the signatories and non-repudiation.

A digital signature scheme typically consists of three algorithms:

A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key. A signing algorithm that, given a message and a private key, produces a signature. A signature verifying algorithm that, given a message, public key and a signature, either accepts or rejects the message’s claim to authenticity.

Two main properties are required. First, a signature generated from a fixed message and fixed private key should verify the authenticity of that message by using the corresponding public key. Secondly, it should be computationally infeasible to generate a valid signature for a party who does not possess the private key.

Challenge–Response Authentication

In computer security, challenge–response authentication is an authentication process that verifies an identity by requiring correct authentication information to be provided in response to a challenge.

Challenge-response authentication is a group or family of protocols characterized by one entity sending a challenge to another entity. The second entity must respond with the appropriate answer to be authenticated.

A simple example of this is password authentication. The challenge is from a server asking the client for a password to authenticate the client’s identity so that the client can be served. For further details and more information visit simplilearn free resource articles.

Challenge-response tokens

A workstation or system generates a random challenge string, and the owner enters the string into the token along with the proper PIN. The token generates a response that is then entered into the workstation or system. The authentication mechanism in the workstation or system then determines whether the owner should be authenticated.


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