confidential data or systems. Authentication can be considered to be of three types: The first type of authentication is accepting proof of identity...

An authenticator is a means used to confirm a user's identity, that is, to perform digital authentication. A person authenticates to a computer system...

Multi-factor authentication (MFA; two-factor authentication, or 2FA, along with similar terms) is an electronic authentication method in which a user...

'Basic' HTTP Authentication Scheme. Internet Engineering Task Force. sec. 2.1. doi:10.17487/RFC7617. RFC 7617. The 'Basic' HTTP Authentication Scheme. Internet...

July 2011. Digest access authentication was originally specified by RFC 2069 (An Extension to HTTP: Digest Access Authentication). RFC 2069 specifies roughly...

Protocol (IP) networks. It supports network-level peer authentication, data origin authentication, data integrity, data confidentiality (encryption), and...

Strong authentication is a notion with several definitions. Strong authentication is often confused with two-factor authentication (more generally known...

cryptography, a message authentication code (MAC), sometimes known as an authentication tag, is a short piece of information used for authenticating and integrity-checking...

In cryptography, deniable authentication refers to message authentication between a set of participants where the participants themselves can be confident...

Extensible Authentication Protocol (EAP) is an authentication framework frequently used in network and internet connections. It is defined in RFC 3748...

Mutual authentication or two-way authentication (not to be confused with two-factor authentication) refers to two parties authenticating each other at...

services without re-entering authentication factors. It should not be confused with same-sign on (Directory Server Authentication), often accomplished by using...

Output: ciphertext and authentication tag (message authentication code or MAC). Decryption Input: ciphertext, key, authentication tag, and optionally a...

may log in using any authentication mechanism supported by the server. It is mainly used by submission servers, where authentication is mandatory. SMTP...

Internet Authentication Service (IAS) is a component of Windows Server operating systems that provides centralized user authentication, authorization...

Lightweight Extensible Authentication Protocol (LEAP) is a proprietary wireless LAN authentication method developed by Cisco Systems. Important features...

Article 4(30) defines "strong customer authentication" itself (as multi-factor authentication): an authentication based on the use of two or more elements...

Web Authentication: An API for accessing Public Key Credentials Web Authentication Working Group Web Authentication API on MDN WebAuthn...

coarse-grained authentication, given that domains appear on the right part of email addresses, after the at sign. Fine-grain authentication, at user level...

Simple Authentication and Security Layer (SASL) is a framework for authentication and data security in Internet protocols. It decouples authentication mechanisms...

A pluggable authentication module (PAM) is a mechanism to integrate multiple low-level authentication schemes into a high-level application programming...

either keyed-hash message authentication code or hash-based message authentication code) is a specific type of message authentication code (MAC) involving...

answer ("response") to be authenticated. The simplest example of a challenge-response protocol is password authentication, where the challenge is asking...

Key/Config-authentication is used to solve the problem of authenticating the keys of a person (say "person A") that some other person ("person B") is...

Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized authentication, authorization, and accounting (AAA)...

components: the transport layer provides server authentication, confidentiality, and integrity; the user authentication protocol validates the user to the server;...

Extensible Authentication Protocol, also known as Protected EAP or simply PEAP, is a protocol that encapsulates the Extensible Authentication Protocol (EAP)...

Kerberos (/ˈkɜːrbərɒs/) is a computer-network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure...

the cornerstone of Initiative for Open Authentication (OATH) and is used in a number of two-factor authentication (2FA) systems. Through the collaboration...

payment card numbers for subsequent use. Authentication cookies are commonly used by web servers to authenticate that a user is logged in, and with which...