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File(s): conf/relying-party.xml
Format: Native Spring
Overview
The SAML2.AttributeQuery profile configuration bean enables support for the SAML 2.0 Attribute Query profile over SOAP. It was implemented mostly for completeness and has seen some use by virtual organizations and research communities but is rarely used in enterprise scenarios.
By default, the IdP will only respond to queries containing NameIDs that it understands how to reverse-map into user identities, and it will not do so out of the box for anything but transient identifiers issued by it. Nevertheless, it should be disabled if not in use.
Configuration
The most typical options used are described in more detail below, but not every obscure option is discussed. See the javadoc for all of the possible configuration options for this profile (note that many of them are inherited from parent classes).
Virtually all the configuration options below can be set via two different properties: a static property that explicitly sets the value to use and a lookup strategy or predicate property that takes a Function or Predicate and returns the value to use. The dynamic property is generally named "propertyNamePredicate" or "propertyNameLookupStrategy" for Boolean- and non-Boolean-valued properties respectively.
Common
Options common to most/all profiles:
Name | Type | Default | Description |
---|
securityConfiguration | SecurityConfiguration | Bean named shibboleth.DefaultSecurityConfiguration | An object containing all of the default security-related objects needed for peer authentication and encryption. See SecurityConfiguration for complete details. |
disallowedFeatures | Integer | 0 | A bitmask of features to disallow, the mask values being specific to individual profiles |
inboundInterceptorFlows | List<String> | | Ordered list of profile interceptor flows to run prior to message processing |
outboundInterceptorFlows | List<String> | | Ordered list of profile interceptor flows to run prior to outbound message handling |
Guidance
Modifying the security configuration is usually done to:
specify an alternate signing or decryption key to use
control signing or encryption algorithms (but for metadata you control, it's advisable to control algorithms by using an extension to specify supported algorithms).
The two interceptor lists allow the much less commonly used profile interceptor injection points to be used. This is largely a Java-based way of doing very low-level sorts of “message rewriting” hackery that might otherwise be impossible to pull off. One use case for the inbound side might be picking up non-standard parameters in a SAML request.
SAML
Options common to SAML profiles:
Name | Type | Default | Description |
---|
signResponses | Boolean | varies by profile | Whether to sign responses |
signRequests | Boolean | false | Whether to sign requests |
Guidance
It isn't too common to need any of these options, and they should be changed only with care.
The signResponses
default varies by profile, see the notes on the individual profile pages.
SAML 2.0
Options common to SAML 2.0 profiles:
Name | Type | Default | Description |
---|
ignoreRequestSignatures | Boolean | false | Whether to skip validation of signatures on requests |
encryptionOptional | Boolean | false | Whether to automatically disable encryption if the relying party does not possess a suitable key |
encryptNameIDs | Boolean | varies by profile | Whether to encrypt NameIDs |
Guidance
The encryption options are generally set correctly for each different profile; see the notes on the individual profile pages.
Note that when the conditions to encrypt various constructs evaluate to true, the IdP will fail the request if it is unable to perform the encryption, for whatever reason. This is overrideable using the encryptionOptional
property, which allows the IdP to encrypt if it can but continue otherwise. If you carefully control your metadata sources, which you should do in any case, you should be able to trust that any SP lacking an encryption key is incapable of encryption anyway, making the property safe to enable.
The ignoreRequestSignatures
option is an interoperability knob to deal with badly broken or incompetently operated services. Signed requests in some profiles, particularly SSO, are often pointless and are frequently used for no good reason. If the signer's code is broken, or even worse if they manage their key poorly and require constant flag days to update them, this allows the signature to be ignored and potentially the key to be bypassed so their incompetence doesn't impact your operations.
Notes
The default value of signResponses
for this profile is an extended form of the behavior that was referred to in V2 as "conditional". It signs only if TLS isn't used (very unusual) or if the receiving port is 443. It assumes that traffic over 443 will be relying on message-based security measures (but see below), whereas traffic to an alternative TLS port like 8443 will be relying on mutual authentication and thus provide a secure channel.
The default value of encryptAssertions
is also conditional on the same basis.