Shibboleth CAS Integration: HTTP Status 500 - Error processing ShibCas authentication request

You need to ‘integrate’ Shibboleth IDP 3 with CAS This means that Shibboleth uses CAS as the authentication module to authenticate users. This is a Shibboleth IDP external authentication plugin that delegates to CAS
December 13, 2016
ShibbolethIDPCASAuthentication

Integrate Shibboleth IDP with CAS

This ensures that all authentication has taken place within CAS (which is better for auditing, session management etc.) Furthermore, if someone has already authenticated against CAS and needs access to a SAML application, Shibboleth can pass the take place within CAS and not within other systems for application access.


The error...

https://technicalconfessions.com/images/postimages/postimages/_438_2_Error processing ShibCas authentication request.png

However the issue is as follows:


Step 1: Download repository

https://technicalconfessions.com/images/postimages/postimages/_438_3_Download shibCAS SVN.png

You need to download the github https://github.com/Unicon/shib-cas-authn3


Step 2: Clone repository

https://technicalconfessions.com/images/postimages/postimages/_438_4_Clone the SVN.png

Step 2: Within your eclipse IDE, go to the Java EE window, locate the git repository and clone a new repository


Step 3: Confirm repository

https://technicalconfessions.com/images/postimages/postimages/_438_5_github for shbcas.png

Keep everything as default and click finish


Step 4: Move the shibcas into the Shibboleth IDP directory

https://technicalconfessions.com/images/postimages/postimages/_438_6_move shibcas to the flow auth.png

You then need to locate the Shib-cas directory that can be located outside your eclipse IDE. The Shibcas directory needs to be copied over to your shibbolethIDP\flows\authn directory as illustrated in the diagram


Step 5: Move the shibcas

https://technicalconfessions.com/images/postimages/postimages/_438_7_modify the web xml file.png

Move the shibcas into the Shibboleth IDP directory


Step 6: Modify the IDP web.xml

Modify the IDP web.xml


Step 7: Modify the idp.properties

Then add the following values within the idp.properties file (notice the hostnames are dependent based on the environment)
# Regular expression matching login flows to enable, e.g. IPAddress|Password
idp.authn.flows=Shibcas
shibcas.casServerUrlPrefix=https://CASSERVER/cas
shibcas.casServerLoginUrl = ${shibcas.casServerUrlPrefix}/login
shibcas.serverName=https://SHIBSEVER

About the author

Daniel is a Technical Manager with over 10 years of consulting expertise in the Identity and Access Management space.
Daniel has built from scratch this blog as well as technicalconfessions.com
Follow Daniel on twitter @nervouswiggles

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