org.springframework.security.web.authentication.www
Class DigestAuthenticationEntryPoint

java.lang.Object
  org.springframework.security.web.authentication.www.DigestAuthenticationEntryPoint

All Implemented Interfaces:

InitializingBean, Ordered, AuthenticationEntryPoint

public class DigestAuthenticationEntryPoint
extends Object
implements AuthenticationEntryPoint, InitializingBean, Ordered

Used by the SecurityEnforcementFilter to commence authentication via the DigestAuthenticationFilter.

The nonce sent back to the user agent will be valid for the period indicated by setNonceValiditySeconds(int). By default this is 300 seconds. Shorter times should be used if replay attacks are a major concern. Larger values can be used if performance is a greater concern. This class correctly presents the stale=true header when the nonce has expierd, so properly implemented user agents will automatically renegotiate with a new nonce value (ie without presenting a new password dialog box to the user).

Version:

$Id: DigestAuthenticationEntryPoint.java 4003 2009-11-24 09:31:03Z ltaylor $

Author:

Ben Alex

Field Summary

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

DigestAuthenticationEntryPoint()

Method Summary

void	afterPropertiesSet()
void	commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) Commences an authentication scheme.
String	getKey()
int	getNonceValiditySeconds()
int	getOrder()
String	getRealmName()
void	setKey(String key)
void	setNonceValiditySeconds(int nonceValiditySeconds)
void	setOrder(int order)
void	setRealmName(String realmName)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DigestAuthenticationEntryPoint

public DigestAuthenticationEntryPoint()

Method Detail

getOrder

public int getOrder()

Specified by:

getOrder in interface Ordered

setOrder

public void setOrder(int order)

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

Exception

commence

public void commence(HttpServletRequest request,
                     HttpServletResponse response,
                     AuthenticationException authException)
              throws IOException,
                     ServletException

Description copied from interface: AuthenticationEntryPoint

Commences an authentication scheme.

ExceptionTranslationFilter will populate the HttpSession attribute named AbstractAuthenticationProcessingFilter.SPRING_SECURITY_SAVED_REQUEST_KEY with the requested target URL before calling this method.

Implementations should modify the headers on the ServletResponse as necessary to commence the authentication process.

Specified by:

commence in interface AuthenticationEntryPoint

Parameters:

request - that resulted in an AuthenticationException

response - so that the user agent can begin authentication

authException - that caused the invocation

Throws:

IOException

ServletException

getKey

public String getKey()

getNonceValiditySeconds

public int getNonceValiditySeconds()

getRealmName

public String getRealmName()

setKey

public void setKey(String key)

setNonceValiditySeconds

public void setNonceValiditySeconds(int nonceValiditySeconds)

setRealmName

public void setRealmName(String realmName)