Shibboleth Developers

Log file available here:

http://stc-test11.cis.brown.edu/idp-process.log

Metadata available here:

http://stc-test11.cis.brown.edu/testshib-metadata-test11.xml

The msg is:

Error encrypting XMLObject

org.apache.xml.security.encryption.XMLEncryptionException: Illegal 
key size or default parameters

(The log file is logging both the IdP and OpenSAML at DEBUG. There's 
also a null pointer exception in the file; I provide info about that 
tomorrow.)

Suggestions about what I did wrong?

Here's the matching element from relying-party.xml:

        <!-- stc -->
    <RelyingParty id="urn:mace:shibboleth:testshib"

provider="https://stc-test11.cis.brown.edu/idp/profile/saml/metadata";
                  defaultSigningCredentialRef="TestShib">
        <ProfileConfiguration xsi:type="saml:ShibbolethSSOProfile" />
        <ProfileConfiguration xsi:type="saml:SAML1AttributeQueryProfile" />
        <ProfileConfiguration xsi:type="saml:SAML1ArtifactResolutionProfile" 
/>

        <!-- stc added encryptAssertion -->
        <ProfileConfiguration xsi:type="saml:SAML2SSOProfile" 
encryptAssertions="true" />
        <ProfileConfiguration xsi:type="saml:SAML2AttributeQueryProfile" />
        <ProfileConfiguration xsi:type="saml:SAML2ArtifactResolutionProfile" 
/>
    </RelyingParty>