# Package javax.security.auth.login

package javax.security.auth.login
This package provides a pluggable authentication framework.

## Package Specification

- Java Security Standard Algorithm Names Specification

Since:
  1.4
External Specifications
  - Java Security Standard Algorithm Names

- Related Packages
  Module
  Package
  Description
  java.base
  javax.security.auth
  This package provides a framework for authentication and authorization.
  java.base
  javax.security.auth.callback
  This package provides the classes necessary for services to interact with applications in order to retrieve information (authentication data including usernames or passwords, for example) or to display information (error and warning messages, for example).
  java.security.jgss
  javax.security.auth.kerberos
  This package contains utility classes related to the Kerberos network authentication protocol.
  java.base
  javax.security.auth.spi
  This package provides the interface to be used for implementing pluggable authentication modules.
  java.base
  javax.security.auth.x500
  This package contains the classes that should be used to store X500 Principal and X500 Private Credentials in a Subject.
- Class
  Description
  AccountException
  A generic account exception.
  AccountExpiredException
  Signals that a user account has expired.
  AccountLockedException
  Signals that an account was locked.
  AccountNotFoundException
  Signals that an account was not found.
  AppConfigurationEntry
  This class represents a single `LoginModule` entry configured for the application specified in the `getAppConfigurationEntry(String appName)` method in the `Configuration` class.
  AppConfigurationEntry.LoginModuleControlFlag
  This class represents whether a `LoginModule` is REQUIRED, REQUISITE, SUFFICIENT or OPTIONAL.
  Configuration
  A Configuration object is responsible for specifying which LoginModules should be used for a particular application, and in what order the LoginModules should be invoked.
  Configuration.Parameters
  This represents a marker interface for Configuration parameters.
  ConfigurationSpi
  This class defines the Service Provider Interface (SPI) for the `Configuration` class.
  CredentialException
  A generic credential exception.
  CredentialExpiredException
  Signals that a `Credential` has expired.
  CredentialNotFoundException
  Signals that a credential was not found.
  FailedLoginException
  Signals that user authentication failed.
  LoginContext
  The `LoginContext` class describes the basic methods used to authenticate Subjects and provides a way to develop an application independent of the underlying authentication technology.
  LoginException
  This is the basic login exception.