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When a user logs in to a service provider, SURFconext sends a so-called SAML assertion to the service provider. This SAML assertion contains a number of statements about the user who is logging in to you service, including his identity, and possibly a number of additional attributes (see below).

SURFconext's SAML2 implementation adheres to the SAML2int standard.

On this page we will show you which attributes SURFconext and their Identity Providers have to offer.

User identifiers

The user's identity is transmitted in the form of the NameID element of the SAML statement. Every Identity Provider must supply a NameID, but for privacy reasons SURFconext will generate a new one regardless. For convenience, this identifier is duplicated in the SAML attribute eduPersonTargetedID (see below).

Service Providers should use the NameID or eduPersonTargetedID (rather than email address, or other attributes that might change over time) to identify users. The NameId is guaranteed to be stable and never change for a fixed user (except in the case of transient identifiers, see below).

SURFconext can provide NameIDs of 2 different types:

  • A persistent identifier. A persistent NameID contains a random string that uniquely identifies the user for this SP, and which persists over multiple sessions for the same user.
  • A transient identifier. A transient NameID contain a random string that uniquely identifies the user for this SP during the session. Once the user's session at SURFconext expires and the users logs into your service once more, a new transient identifier will be generated for the user and SP.

Persistent and transient identifiers typically have the form 'bd09168cf0c2e675b2def0ade6f50b7d4bb4aaef'. However, please do not rely on the identifier being a hexadecimal string, as the syntax may change in the future.

The two supported NameID types, for respectively persistent and transient NameID specifiers, are:

  • urn:oasis:names:tc:SAML:2.0:nameid-format:persistent
  • urn:oasis:names:tc:SAML:2.0:nameid-format:transient

Attribute schemas

SURFconext supports two attributes schemas: a (SAML2.0 compliant) urn:oid schema and a (SAML1.1) named urn schema. Both of these can be used to convey the same information (except for the NameID, which is only available in the urn:oid schema). By default SURFconext will provide attributes in both schemata as part of the assertion. It is not recommended to mix the use of these schemata, but for legacy reason SURFconext offers both.

Attribute overview

SURFconext supported relaying of the following attributes:

Friendly name

Attribute name

Definition

Data type

Example

ID

(NameID)
urn:mace:dir:attribute-def:eduPersonTargetedID
urn:oid:1.3.6.1.4.1.5923.1.1.1.10

eduPerson

UTF8 string
(unbounded)

bd09168cf0c2e675b2def0ade6f50b7d4bb4aae

Surname

urn:mace:dir:attribute-def:sn
urn:oid:2.5.4.4

X.520

UTF8 string
(unbounded)

Vermeegen
孝慈

Given name

urn:mace:dir:attribute-def:givenName
urn:oid:2.5.4.42

X.520

UTF8 string
(unbounded)

Mërgim Lukáš
Þrúður

Common name

urn:mace:dir:attribute-def:cn
urn:oid:2.5.4.3

X.520

UTF8 String
(unbounded)

Prof.dr. Mërgim Lukáš Vermeegen
加来 千代, PhD.

Display name

urn:mace:dir:attribute-def:displayName
urn:oid:2.16.840.1.113730.3.1.241

RFC2798

UTF8 String
(unbounded)

Prof.dr. Mërgim L. Vermeegen
加来 千代, PhD.

Email address

urn:mace:dir:attribute-def:mail
urn:oid:0.9.2342.19200300.100.1.3

RFC4524

RFC-5322 address
(max 256 chars)

m.l.vermeegen@university.example.org
maarten.'t.hart@uniharderwijk.nl 
"very.unusual.@.but valid.nonetheless"@example.com
mlv@[IPv6:2001:db8::1234:4321]

Organization

urn:mace:terena.org:attribute-def:schacHomeOrganization
urn:oid:1.3.6.1.4.1.25178.1.2.9

Schac

RFC-1035 domain string

example.nl
something.example.org  

Organization Type

urn:mace:terena.org:attribute-def:schacHomeOrganizationType
urn:oid:1.3.6.1.4.1.25178.1.2.10

Schac

RFC-2141 URN
see Schac standard  

urn:mace:terena.org:schac:homeOrganizationType:int:university
urn:mace:terena.org:schac:homeOrganizationType:es:opi

Employee/student number

urn:schac:attribute-def:schacPersonalUniqueCode
urn:oid:1.3.6.1.4.1.25178.1.2.14

Schac

RFC-2141 URN
see SURFnet registry 

urn:schac:personalUniqueCode:nl:local:example.edu:employeeid:x12-3456
urn:schac:personalUniqueCode:nl:local:example.nl:studentid:s1234567

Affiliation

urn:mace:dir:attribute-def:eduPersonAffiliation
urn:oid:1.3.6.1.4.1.5923.1.1.1.1

eduPerson

Enum type (UTF8 String)

employee, student, staff, member (alum, affiliate, faculty, library-walk-in are not allowed)

Entitlement

urn:mace:dir:attribute-def:eduPersonEntitlement
urn:oid:1.3.6.1.4.1.5923.1.1.1.7

eduPerson

RFC-2141 URN
Multi-valued

to be determined per service (see Standardized values for eduPersonEntitlement)

PrincipalName

urn:mace:dir:attribute-def:eduPersonPrincipalName
urn:oid:1.3.6.1.4.1.5923.1.1.1.6

eduPerson

UTF8 String
user@domain

piet.jønsen@example.edu
not.a@vålîd.émail.addreß

isMemberOf

urn:mace:dir:attribute-def:isMemberOf
urn:oid:1.3.6.1.4.1.5923.1.5.1.1

eduMember

RFC-2141 URN
Multi-valued

urn:collab:org:surf.nl
urn:collab:org:clarin.org

uid

urn:mace:dir:attribute-def:uid
urn:oid:0.9.2342.19200300.100.1.1

RFC4519

UTF8 String
(max 256 chars)

s9603145
flåp@example.edu

preferredLanguage

urn:mace:dir:attribute-def:preferredLanguage
urn:oid:2.16.840.1.113730.3.1.39

RFC2798
BCP47

List of BCP47 language tags

nl
nl, en-gb;q=0.8, en;q=0.7

Note that not all identity providers might make all attributes available.

Detailed attribute descriptions

ID

See User identifiers.

Surname

urn:mace

urn:mace:dir:attribute-def:sn

urn:oid

urn:oid:2.5.4.4

Multiplicity

single-valued

Data typeUTF8 string (unbounded)

Description

The surname of a person (including any words such as “van”, “de”, “von” etc.) used for personalisation; this can be a combination of existing attributes.

ExamplesVermeegen 
孝慈

Notes

 

Given name

urn:mace

urn:mace:dir:attribute-def:givenName

urn:oid

urn:oid:2.5.4.42

Multiplicity

single-valued

Data typeUTF8 string (unbounded)

Description

Given name / “name known by”; combinations of title, initials, and “name known by” are possible.

Examples

Jan Klaassen
Mërgim K. Lukáš 
Þrúður

Notes

 

Common name

urn:mace

urn:mace:dir:attribute-def:cn

urn:oid

urn:oid:2.5.4.3

Multiplicity

multi-valued

Data typeUTF8 string 
(unbounded)

Description

Full name.

ExamplesProf.dr. Mërgim Lukáš Vermeegen 
加来 千代, PhD.

Notes

For example, a typical name of a person in an English-speaking country comprises a personal title (e.g. Mr., Ms., Rd, Professor, Sir, Lord), a first name, middle name(s), last name, generation qualifier (if any, e.g. Jr.) and decorations and awards (if any, e.g. CBE).

Display name

urn:mace

urn:mace:dir:attribute-def:displayName

urn:oid

urn:oid:2.16.840.1.113730.3.1.241

Multiplicity

single-valued

Data typeUTF8 string (unbounded)

Description

Name as displayed in applications

ExamplesProf.dr. Mërgim Lukáš Vermeegen 
加来 千代, PhD.

Notes

  •  This attribute can typically be changed by the end-users themselves, and is therefore not very suitable for identification.

Email address

urn:mace

urn:mace:dir:attribute-def:mail

urn:oid

urn:oid:0.9.2342.19200300.100.1.3

Multiplicity

multi-valued

Data typeRFC-5322 address (max 256 chars)

Description

e-mail address; syntax in accordance with RFC 5322

Examplesm.l.vermeegen@university.example.org 
"very.unusual.@.unusual.com"@example.com 
mlv@[IPv6:2001:db8::1234:4321]

Notes

  • Multiple email addresses are allowed
  • An email address is not necessarily the email address of this person at the institution.
  • Do not use this attribute to uniquely identify a user.  Use the NameId  instead.
  • A user's email address may change over time, or an IdP may allow a user to change this value themselves. This makes that attribute unsuitable for authentication and authorization purposes.

uid

urn:mace

urn:mace:dir:attribute-def:uid

urn:oid

urn:oid:0.9.2342.19200300.100.1.1

Multiplicity

multi-valued

Data typeUTF8 String (max 256 chars); use of spaces and @-characters is discouraged.

Description

The unique code for a person that is used as the login name within the institution.

Examples

s9603145 
piet 
flåp@example.edu

Notes

  • The uid is not a unique identifier for SURFconext users.  Uid values are at most unique for each IdP.
  • Ideally the uid is not only a login name/code but also an identifier that is guaranteed as being unique within the institution over the course of time. At the moment, there is no such guarantee.
  • Use the NameId for unique identifiers in SURFconext rather than uid.
  • Use the eduPersonPrincipalName attribute if a human-readable unique identifier is required
  • A uid may contain any unicode character. E.g., "org:surfnet.nl:joe von stühl" is a valid uid.
  • SURFconext translates @-characters in the uid to underscores.  Yes, this means that uids are not guaranteed to be unique.

Home organisation

urn:mace

urn:mace:terena.org:attribute-def:schacHomeOrganization

urn:oid

urn:oid:1.3.6.1.4.1.25178.1.2.9

Multiplicity

single-valued

Data typeRFC-1035 domain string. The domain MUST be a secondary-level domain that is under control by the institution. Preferably, the institution's main domain name should be used.

Description

The user's organisation using the organisation’s domain name; syntax in accordance with RFC 1035.

Examples

uniharderwijk.nl
example.nl 

Notes

  •  In the past, SURFconext used to send the home organisation in the attribute urn:oid:1.3.6.1.4.1.1466.115.121.1.15, which was incorrect.  Since 2013, the correct oid urn:oid:1.3.6.1.4.1.25178.1.2.9 is in use.  For reasons of compatibility, the old (wrong) key is also still sent.  It should not be used in new implementations.
  • Matching values against this attribute should be case-insensitive, i.e. the values "uniharderwijk.nl" and "UniHarderwijk.nl" should be considered equal.

Organization type

urn:mace

urn:mace:terena.org:attribute-def:schacHomeOrganizationType

urn:oid

urn:oid:1.3.6.1.4.1.25178.1.2.10

Multiplicity

single-value

Data typeRFC-2141 URN (see Schac standard)

Description

designation of the type of organisation as defined on http://www.terena.org/registry/terena.org/schac/homeOrganizationType

Examplesurn:mace:terena.org:schac:homeOrganizationType:int:university 
urn:mace:terena.org:schac:homeOrganizationType:es:opi

Notes

Employee-student number

urn:mace

urn:schac:attribute-def:schacPersonalUniqueCode

urn:oid

urn:oid:1.3.6.1.4.1.25178.1.2.14

Multiplicity

multi-value

Data typeRFC-2141 URN (see SURFnet registry)

Description

The user's student, employee, and/or member id as used in the university's internal systems

Examplesurn:schac:personalUniqueCode:nl:local:example.edu:employeeid:x12-3456
urn:schac:personalUniqueCode:nl:local:example.nl:studentid:s1234567

Notes

  • Attribute values are registered by SURFnet on https://wiki.surfnet.nl/x/xoTdAg
  • Please contact the SURFnet support team if you would like to use this attribute as an SP, or if you would like to provide it as an IdP.
  • This attribute's main use is for matching user accounts to the university's internal systems

Affiliation

urn:mace

urn:mace:dir:attribute-def:eduPersonAffiliation

urn:oid

urn:oid:1.3.6.1.4.1.5923.1.1.1.1

Multiplicity

multi-valued

Data typeUTF8 String (only the values enumerated below are allowed)

Description

Indicates the relationship between the user and his home organisation.  The following values are permitted:

  • student — student
  • employee — all employees
  • staff — academic staff
  • member anyone employed by or studying at the institution
Examplessee above

Notes

  • Any user who has the affiliation student, employee, or staff, should also have the value member.
  • Identity providers might internally use additional values for the affiliation attribute, such as alum or affiliate.  Per SURFconext policy, such users are not allowed access to SURFconext.
  • According to the eduPerson specification, the values of this attribute are case insensitive; for interoperability reasons however, we require lower-case values as specified above in SURFconext.

Entitlements

urn:mace

urn:mace:dir:attribute-def:eduPersonEntitlement

urn:oid

urn:oid:1.3.6.1.4.1.5923.1.1.1.7

Multiplicity

multi-value

Data typeRFC-2141 URN

Description

entitlement; custom URI (URL or URN) that indicates an entitlement to something.

Examples

urn:mace:terena.org:tcs:personal-admin
urn:x-surfnet:surfdomeinen.nl:role:dnsadmin

Notes

  • This attribute can be used to communicate entitlements, roles, etc, from identity providers to services, which can be used, for example, for authorization.
  • The values of this attribute are scoped to the identity provider that is authoritative for the attribute. 
  • Formatting rules apply: See also the SURFconext entitlement namespacing policy.

Principle name

urn:mace

urn:mace:dir:attribute-def:eduPersonPrincipalName

urn:oid

urn:oid:1.3.6.1.4.1.5923.1.1.1.6

Multiplicity

single-valued

Data typeUTF8 String of the form user@domain. The domain MUST be equal to or a be a subdomain of the scacHomeOrganization.

Description

Unique identifier for a user.  

Examplespiet.jønsen@example.edu
not.a@vålîd.émail.addreß

Notes

  • Although this value resembles an email address, it MUST NOT be used as an email address. In many cases mail cannot be delivered to this "address".
  • Even though this value uniquely identifies a user, it is not guaranteed that it is persistent over sessions (even though it usually is).
  • Do not use this to uniquely identify users.  Use the NameId instead.

isMemberOf

urn:mace

urn:mace:dir:attribute-def:isMemberOf

urn:oid

urn:oid:1.3.6.1.4.1.5923.1.5.1.1

Multiplicity

multi-valued

Data typeRFC-2141 URN 

Description

Lists the collaborative organisations the user is a member of.

Examplesurn:collab:org:surf.nl

Notes

  • Attribute values are URIs (URN or URL)
  • The only currently supported value is urn:collab:org:surf.nl, which indicated that the user's home institution is a member of SURFnet
  • In the future, this can be used to determine membership of non-institutional collaborative organisations.

Preferred Language

urn:mace

urn:mace:dir:attribute-def:preferredLanguage

urn:oid

urn:oid:2.16.840.1.113730.3.1.39

Multiplicity

single-valued

Data typeRFC2798 BCP47

Description

a two-letter abbreviation for the preferred language according to the ISO 639 language abbreviation code table; no subcodes.

Examples

nl
en

Notes

Used to indicate an individual's preferred written or spoken language. This is useful for international correspondence or human-computer interaction. Values for this attribute type MUST conform to the definition of the Accept-Language header field defined in RFC 2068 with one exception: ?the value ":" should be omitted. 

EduPersonTargetedID

urn:mace

urn:mace:dir:attribute-def:eduPersonTargetedID

urn:oid

urn:oid:1.3.6.1.4.1.5923.1.1.1.10

Multiplicity

single-valued

Data typeUTF8 string (unbounded)

Description 

The attribute eduPersonTargetedID is a copy of the Subject -> NameID which is generated by SURFconext itself. When an Identity Provider provides the eduPersonTargetedID itself, it is always overwritten by SURFconext.

Examplesbd09168cf0c2e675b2def0ade6f50b7d4bb4aae

Notes 

This attribute is created because the Subject -> NameID itself is not part of the SAML v2.0 response and therefore can not be used. Within SURFconext the Subject -> NameID is explicitly placed in the attribute eduPersonTargetedID, so that you can use it.

EduPersonUserCredentials

1 april!

SURFconext geeft nooit dergelijke informatie door. Gevoelige gebruikersinformatie zoals wachtwoorden is lokaal opgeslagen bij de instelling en wordt nooit met derden gedeeld. Dit is juist de kracht van SURFconext.

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