Class DigestAuthenticate

Digest Authentication adapter for AuthComponent.

Provides Digest HTTP authentication support for AuthComponent. Unlike most AuthComponent adapters, DigestAuthenticate requires a special password hash that conforms to RFC2617. You can create this password using DigestAuthenticate::password(). If you wish to use digest authentication alongside other authentication methods, its recommended that you store the digest authentication separately.

Clients using Digest Authentication must support cookies. Since AuthComponent identifies users based on Session contents, clients without support for cookies will not function properly.

Using Digest auth

In your controller's components array, add auth + the required settings. {{{ public $components = array( 'Auth' => array( 'authenticate' => array('Digest') ) ); }}}

In your login function just call $this->Auth->login() without any checks for POST data. This will send the authentication headers, and trigger the login dialog in the browser/client.

Generating passwords compatible with Digest authentication.

Due to the Digest authentication specification, digest auth requires a special password value. You can generate this password using DigestAuthenticate::password()

$digestPass = DigestAuthenticate::password($username, env('SERVER_NAME'), $password);

Its recommended that you store this digest auth only password separate from password hashes used for other login methods. For example User.digest_pass could be used for a digest password, while User.password would store the password hash for use with other methods like Basic or Form.

BaseAuthenticate

DigestAuthenticate

Package: Cake\Controller\Component\Auth
Since: 2.0
Copyright: Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
License: License (http://www.opensource.org/licenses/mit-license.php)
Location: Cake/Controller/Component/Auth/DigestAuthenticate.php

Properties summary

$settings public

array

Settings for this object.

Inherited Properties

_Collection

Method Summary

__construct() public

Constructor, completes configuration for digest authentication.
_findUser() protected

Find a user record using the standard options.
_getDigest() protected

Gets the digest headers from the request/environment.
authenticate() public

Authenticate a user using Digest HTTP auth. Will use the configured User model and attempt a login using Digest HTTP auth.
generateResponseHash() public

Generate the response hash for a given digest array.
getUser() public

Get a user based on information in the request. Used by cookie-less auth for stateless clients.
loginHeaders() public

Generate the login headers
parseAuthData() public

Parse the digest authentication headers and split them up.
password() public static

Creates an auth digest password hash to store

Method Detail

__construct() public ¶

__construct( ComponentCollection $collection , array $settings )

Constructor, completes configuration for digest authentication.

Parameters

ComponentCollection $collection: The Component collection used on this request.
array $settings: An array of settings.

Overrides

BaseAuthenticate::__construct()

_findUser() protected ¶

_findUser( string $username , string $password )

Find a user record using the standard options.

Parameters

string $username: The username/identifier.
string $password: Unused password, digest doesn't require passwords.

Returns

Mixed
Either false on failure, or an array of user data.

Overrides

BaseAuthenticate::_findUser()

_getDigest() protected ¶

_getDigest( )

Gets the digest headers from the request/environment.

Returns

array
Array of digest information.

authenticate() public ¶

authenticate( CakeRequest $request , CakeResponse $response )

Authenticate a user using Digest HTTP auth. Will use the configured User model and attempt a login using Digest HTTP auth.

Parameters

CakeRequest $request: The request to authenticate with.
CakeResponse $response: The response to add headers to.

Returns

mixed
Either false on failure, or an array of user data on success.

generateResponseHash() public ¶

generateResponseHash( array $digest , string $password )

Generate the response hash for a given digest array.

Parameters

array $digest: Digest information containing data from DigestAuthenticate::parseAuthData().
string $password: The digest hash password generated with DigestAuthenticate::password()

Returns

string
Response hash

getUser() public ¶

getUser( CakeRequest $request )

Get a user based on information in the request. Used by cookie-less auth for stateless clients.

Parameters

CakeRequest $request: Request object.

Returns

mixed
Either false or an array of user information

Overrides

BaseAuthenticate::getUser()

loginHeaders() public ¶

loginHeaders( )

Generate the login headers

Returns

string
Headers for logging in.

parseAuthData() public ¶

parseAuthData( string $digest )

Parse the digest authentication headers and split them up.

Parameters

string $digest: The raw digest authentication headers.

Returns

array
An array of digest authentication headers

password() public static ¶

password( string $username , string $password , string $realm )

Creates an auth digest password hash to store

Parameters

string $username: The username to use in the digest hash.
string $password: The unhashed password to make a digest hash for.
string $realm: The realm the password is for.

Returns

string
the hashed password that can later be used with Digest authentication.

Methods inherited from BaseAuthenticate

_password() protected ¶

_password( string $password )

Hash the plain text password so that it matches the hashed/encrypted password in the datasource.

Parameters

string $password: The plain text password.

Returns

string
The hashed form of the password.

logout() public ¶

logout( array $user )

Allows you to hook into AuthComponent::logout(), and implement specialized logout behavior.

All attached authentication objects will have this method called when a user logs out.

Parameters

array $user: The user about to be logged out.

Properties detail

`$settings` ¶

public array

Settings for this object.

fields The fields to use to identify a user by.
userModel The model name of the User, defaults to User.
scope Additional conditions to use when looking up and authenticating users, i.e. array('User.is_active' => 1).
recursive The value of the recursive key passed to find(). Defaults to 0.
contain Extra models to contain and store in session.
realm The realm authentication is for, Defaults to the servername.
nonce A nonce used for authentication. Defaults to uniqid().
qop Defaults to auth, no other values are supported at this time.
opaque A string that must be returned unchanged by clients. Defaults to md5($settings['realm'])

array(
    'fields' => array(
        'username' => 'username',
        'password' => 'password'
    ),
    'userModel' => 'User',
    'scope' => array(),
    'recursive' => 0,
    'contain' => null,
    'realm' => '',
    'qop' => 'auth',
    'nonce' => '',
    'opaque' => ''
)

Packages

Classes

Class DigestAuthenticate

Using Digest auth

Generating passwords compatible with Digest authentication.

Properties summary

Inherited Properties

Method Summary

__construct() public

_findUser() protected

_getDigest() protected

authenticate() public

generateResponseHash() public

getUser() public

loginHeaders() public

parseAuthData() public

password() public static

Method Detail

__construct() public ¶

Parameters

Overrides

_findUser() protected ¶

Parameters

Returns

Overrides

_getDigest() protected ¶

Returns

authenticate() public ¶

Parameters

Returns

generateResponseHash() public ¶

Parameters

Returns

getUser() public ¶

Parameters

Returns

Overrides

loginHeaders() public ¶

Returns

parseAuthData() public ¶

Parameters

Returns

password() public static ¶

Parameters

Returns

Methods inherited from BaseAuthenticate

_password() protected ¶

Parameters

Returns

logout() public ¶

Parameters

Properties detail

$settings ¶

`$settings` ¶