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simplesamlphp-reference-sp-remote.md 16.19 KiB

SP remote metadata reference

This is a reference for metadata options available for metadata/saml20-sp-remote.php and metadata/shib13-sp-remote.php. Both files have the following format:

<?php
/* The index of the array is the entity ID of this SP. */
$metadata['entity-id-1'] = array(
    /* Configuration options for the first SP. */
);
$metadata['entity-id-2'] = array(
    /* Configuration options for the second SP. */
);
/* ... */

Common options

The following options are common between both the SAML 2.0 protocol and Shibboleth 1.3 protocol:

attributes : This should indicate which attributes an SP should receive. It is used by for example the consent:Consent module to tell the user which attributes the SP will receive, and the core:AttributeLimit module to limit which attributes are sent to the SP.

authproc : Used to manipulate attributes, and limit access for each SP. See the authentication processing filter manual.

base64attributes : Whether attributes sent to this SP should be base64 encoded. The default is FALSE.

description : A description of this SP. Will be used by various modules when they need to show a description of the SP to the user.

: This option can be translated into multiple languages in the same way as the name-option.

name : The name of this SP. Will be used by various modules when they need to show a name of the SP to the user.

: If this option is unset, the organization name will be used instead (if it is available).

: This option can be translated into multiple languages by specifying the value as an array of language-code to translated name:

    'name' => array(
        'en' => 'A service',
        'no' => 'En tjeneste',
    ),

OrganizationName : The name of the organization responsible for this SPP. This name does not need to be suitable for display to end users.

: This option can be translated into multiple languages by specifying the value as an array of language-code to translated name:

    'OrganizationName' => array(
        'en' => 'Example organization',
        'no' => 'Eksempel organisation',
    ),

: Note: If you specify this option, you must also specify the OrganizationURL option.

OrganizationDisplayName : The name of the organization responsible for this IdP. This name must be suitable for display to end users. If this option isn't specified, OrganizationName will be used instead.

: This option can be translated into multiple languages by specifying the value as an array of language-code to translated name.

: Note: If you specify this option, you must also specify the OrganizationName option.

OrganizationURL : A URL the end user can access for more information about the organization.

: This option can be translated into multiple languages by specifying the value as an array of language-code to translated URL.

: Note: If you specify this option, you must also specify the OrganizationName option.

privacypolicy : This is an absolute URL for where an user can find a privacypolicy for this SP. If set, this will be shown on the consent page. %SPENTITYID% in the URL will be replaced with the entity id of this service provider.

: Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option in the IdP-hosted metadata.

userid.attribute : The attribute name of an attribute which uniquely identifies the user. This attribute is used if SimpleSAMLphp needs to generate a persistent unique identifier for the user. This option can be set in both the IdP-hosted and the SP-remote metadata. The value in the sp-remote metadata has the highest priority. The default value is eduPersonPrincipalName.

: Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option in the IdP-hosted metadata.

SAML 2.0 options

The following SAML 2.0 options are available:

AssertionConsumerService : The URL of the AssertionConsumerService endpoint for this SP. This option is required - without it you will not be able to send responses back to the SP.

: The value of this option is specified in one of several endpoint formats.

attributes.NameFormat : What value will be set in the Format field of attribute statements. This parameter can be configured multiple places, and the actual value used is fetched from metadata by the following priority:

: 1. SP Remote Metadata

2.  IdP Hosted Metadata

: The default value is: urn:oasis:names:tc:SAML:2.0:attrname-format:basic

: Some examples of values specified in the SAML 2.0 Core Specification:

: - urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified

-   `urn:oasis:names:tc:SAML:2.0:attrname-format:uri` (The default
    in Shibboleth 2.0)

-   `urn:oasis:names:tc:SAML:2.0:attrname-format:basic` (The
    default in Sun Access Manager)

: You can also define your own value.

: Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option in the IdP-hosted metadata.

: (This option was previously named AttributeNameFormat.)

encryption.blacklisted-algorithms : Blacklisted encryption algorithms. This is an array containing the algorithm identifiers.

: Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option in the IdP-hosted metadata.

: The RSA encryption algorithm with PKCS#1 v1.5 padding is blacklisted by default for security reasons. Any assertions encrypted with this algorithm will therefore fail to decrypt. You can override this limitation by defining an empty array in this option (or blacklisting any other algorithms not including that one). However, it is strongly discouraged to do so. For your own safety, please include the string 'http://www.w3.org/2001/04/xmlenc#rsa-1_5' if you make use of this option.

ForceAuthn : Set this TRUE to force the user to reauthenticate when the IdP receives authentication requests from this SP. The default is FALSE.

NameIDFormat : The NameIDFormat this SP should receive. The three most commonly used values are:

: 1. urn:oasis:names:tc:SAML:2.0:nameid-format:transient 2. urn:oasis:names:tc:SAML:2.0:nameid-format:persistent 3. urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress

: The transient format will generate a new unique ID every time the SP logs in.

: To properly support the persistent and emailAddress formats, you should configure NameID generation filters on your IdP.

nameid.encryption : Whether NameIDs sent to this SP should be encrypted. The default value is FALSE.

: Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option in the IdP-hosted metadata.

SingleLogoutService : The URL of the SingleLogoutService endpoint for this SP. This option is required if you want to implement single logout for this SP. If the option isn't specified, this SP will not be logged out automatically when a single logout operation is initialized.

: The value of this option is specified in one of several endpoint formats.

SingleLogoutServiceResponse : The URL logout responses to this SP should be sent. If this option is unspecified, the SingleLogoutService endpoint will be used as the recipient of logout responses.

SPNameQualifier : SP NameQualifier for this SP. If not set, the IdP will set the SPNameQualifier to be the SP entity ID.

certData : The base64 encoded certificate for this SP. This is an alternative to storing the certificate in a file on disk and specifying the filename in the certificate-option.

certificate : Name of certificate file for this SP. The certificate is used to verify the signature of messages received from the SP (if redirect.validateis set to TRUE), and to encrypting assertions (if assertion.encryption is set to TRUE and sharedkey is unset.)

saml20.sign.response : Whether <samlp:Response> messages should be signed. Defaults to TRUE.

: Note that this option also exists in the IdP-hosted metadata. The value in the SP-remote metadata overrides the value in the IdP-hosted metadata.

saml20.sign.assertion : Whether <saml:Assertion> elements should be signed. Defaults to TRUE.

: Note that this option also exists in the IdP-hosted metadata. The value in the SP-remote metadata overrides the value in the IdP-hosted metadata.

signature.algorithm : The algorithm to use when signing any message sent to this specific service provider. Defaults to RSA-SHA1. : Note that this option also exists in the IdP-hosted metadata. The value in the SP-remote metadata overrides the value in the IdP-hosted metadata. : Possible values:

* `http://www.w3.org/2000/09/xmldsig#rsa-sha1`
   *Note*: the use of SHA1 is **deprecated** and will be disallowed in the future.
* `http://www.w3.org/2001/04/xmldsig-more#rsa-sha256`
* `http://www.w3.org/2001/04/xmldsig-more#rsa-sha384`
* `http://www.w3.org/2001/04/xmldsig-more#rsa-sha512`

signature.privatekey : Name of private key file for this IdP, in PEM format. The filename is relative to the cert/-directory. : Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option privatekey in the IdP-hosted metadata.

signature.privatekey_pass : Passphrase for the private key. Leave this option out if the private key is unencrypted. : Note that this option only is used if signature.privatekey is present.

signature.certificate : Certificate file included by IdP for KeyInfo within the signature for the SP, in PEM format. The filename is relative to the cert/-directory. : If signature.privatekey is present and signature.certificate is left blank, X509Certificate will not be included with the signature.

simplesaml.nameidattribute : When the value of the NameIDFormat-option is set to either email or persistent, this is the name of the attribute which should be used as the value of the NameID. The attribute must be in the set of attributes exported to the SP (that is, be in the attributes array). For more advanced control over NameID, including the ability to specify any attribute regardless of the set sent to the SP, see the NameID processing filters.

: Typical values can be mail for when using the email format, and eduPersonTargetedID when using the persistent format.

simplesaml.attributes : Whether the SP should receive any attributes from the IdP. The default value is TRUE.

attributeencodings : What encoding should be used for the different attributes. This is an array which maps attribute names to attribute encodings. There are three different encodings:

: - string: Will include the attribute as a normal string. This is the default.

: - base64: Store the attribute as a base64 encoded string. This is the default when the base64attributes-option is set to TRUE.

: - raw: Store the attribute without any modifications. This makes it possible to include raw XML in the response.

sign.logout : Whether to sign logout messages sent to this SP.

: Note that this option also exists in the IdP-hosted metadata. The value in the SP-remote metadata overrides the value in the IdP-hosted metadata.

validate.authnrequest : Whether we require signatures on authentication requests sent from this SP.

: Note that this option also exists in the IdP-hosted metadata. The value in the SP-remote metadata overrides the value in the IdP-hosted metadata.

validate.logout : Whether we require signatures on logout messages sent from this SP.

: Note that this option also exists in the IdP-hosted metadata. The value in the SP-remote metadata overrides the value in the IdP-hosted metadata.

Encrypting assertions

It is possible to encrypt the assertions sent to a SP. Currently the only algorithm supported is AES128_CBC or RIJNDAEL_128.

There are two modes of encryption supported by SimpleSAMLphp. One is symmetric encryption, in which case both the SP and the IdP needs to share a key. The other mode is the use of public key encryption. In that mode, the public key of the SP is extracted from the certificate of the SP.

assertion.encryption : Whether assertions sent to this SP should be encrypted. The default value is FALSE.

: Note that this option also exists in the IdP-hosted metadata. This entry in the SP-remote metadata overrides the option in the IdP-hosted metadata.

sharedkey : Symmetric key which should be used for encryption. This should be a 128-bit key. If this option is not specified, public key encryption will be used instead.

Fields for signing and validating messages

SimpleSAMLphp only signs authentication responses by default. Signing of logout requests and logout responses can be enabled by setting the redirect.sign option. Validation of received messages can be enabled by the redirect.validate option.

These options overrides the options set in saml20-idp-hosted.

redirect.sign : Whether logout requests and logout responses sent to this SP should be signed. The default is FALSE.

redirect.validate : Whether authentication requests, logout requests and logout responses received from this SP should be validated. The default is FALSE

Example: Configuration for validating messages

'redirect.validate' => TRUE,
'certificate' => 'example.org.crt',

Fields for scoping

Only relevant if you are a proxy/bridge and wants to limit the idps this sp can use.

IDPList : The list of scoped idps ie. the list of entityids for idps that are relevant for this sp. The final list is the concatenation of the list given as parameter to InitSSO (at the sp), the list configured at the sp and the list configured at the ipd (here) for this sp. The intersection of the final list and the idps configured at the at this idp will be presented to the user at the discovery service if neccessary. If only one idp is in the intersection the discoveryservice will go directly to the idp.

Example: Configuration for scoping

 'IDPList' => array('https://idp1.wayf.dk', 'https://idp2.wayf.dk'),

Shibboleth 1.3 options

The following options for Shibboleth 1.3 SP's are avaiblable:

AssertionConsumerService : The URL of the AssertionConsumerService endpoint for this SP. This endpoint must accept the SAML responses encoded with the urn:oasis:names:tc:SAML:1.0:profiles:browser-post encoding. This option is required - without it you will not be able to send responses back to the SP.

: The value of this option is specified in one of several endpoint formats.

NameQualifier : What the value of the NameQualifier-attribute of the <NameIdentifier>-element should be. The default value is the entity ID of the SP.

audience : The value which should be given in the <Audience>-element in the <AudienceRestrictionCondition>-element in the response. The default value is the entity ID of the SP.

scopedattributes : Array with names of attributes which should be scoped. Scoped attributes will receive a Scope-attribute on the AttributeValue-element. The value of the Scope-attribute will be taken from the attribute value:

: <AttributeValue>someuser@example.org</AttributeValue>

: will be transformed into

: <AttributeValue Scope="example.org">someuser</AttributeValue>

: By default, no attributes are scoped. This option overrides the option with the same name in the shib13-idp-hosted.php metadata file.