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Q&A What are the prefixes like "md:" and "ds:" in SAML metadata?

The prefixes are explained in saml-metadata-2.0-os spec in section 1.1: "Notation" Prefix Explanation saml: This is the SAML V2.0 assertion namespace [SAMLCore]. The prefix is gen...

posted 4mo ago by Iizuki‭  ·  edited 4mo ago by Michael‭

Answer
#2: Post edited by user avatar Michael‭ · 2024-03-06T06:20:38Z (4 months ago)
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  • The prefixes are explained in [saml-metadata-2.0-os spec](https://docs.oasis-open.org/security/saml/v2.0/saml-metadata-2.0-os.pdf) section 1.1:
  • | Prefix | Explanation
  • |--------|------------|
  • | saml: | This is the SAML V2.0 assertion namespace [SAMLCore]. The prefix is generally elided in mentions of SAML assertion-related elements in text.
  • | samlp: | This is the SAML V2.0 protocol namespace [SAMLCore]. The prefix is generally elided in mentions of XML protocol-related elements in text.
  • | md: | This is the SAML V2.0 metadata namespace, defined in a schema [SAMLMeta-xsd].
  • | ds: | This is the XML Signature namespace [XMLSig].
  • | xenc: | This is the XML Encryption namespace [XMLEnc].
  • | xs: | This namespace is defined in the W3C XML Schema specification [Schema1]. In schema listings, this is the default namespace and no prefix is shown. For clarity, the prefix is generally shown in specification text when XML Schema-related constructs are mentioned.
  • The prefixes are explained in [saml-metadata-2.0-os spec][saml2.0] in [section 1.1: "Notation"][saml2.0-1.1]
  • | Prefix | Explanation
  • |--------|------------|
  • | saml: | This is the SAML V2.0 assertion namespace [SAMLCore]. The prefix is generally elided in mentions of SAML assertion-related elements in text.
  • | samlp: | This is the SAML V2.0 protocol namespace [SAMLCore]. The prefix is generally elided in mentions of XML protocol-related elements in text.
  • | md: | This is the SAML V2.0 metadata namespace, defined in a schema [SAMLMeta-xsd].
  • | ds: | This is the XML Signature namespace [XMLSig].
  • | xenc: | This is the XML Encryption namespace [XMLEnc].
  • | xs: | This namespace is defined in the W3C XML Schema specification [Schema1]. In schema listings, this is the default namespace and no prefix is shown. For clarity, the prefix is generally shown in specification text when XML Schema-related constructs are mentioned.
  • [saml2.0]: https://docs.oasis-open.org/security/saml/v2.0/saml-metadata-2.0-os.pdf
  • [saml2.0-1.1]: https://docs.oasis-open.org/security/saml/v2.0/saml-metadata-2.0-os.pdf#page=5
#1: Initial revision by user avatar Iizuki‭ · 2024-03-05T13:36:07Z (4 months ago)
The prefixes are explained in [saml-metadata-2.0-os spec](https://docs.oasis-open.org/security/saml/v2.0/saml-metadata-2.0-os.pdf) section 1.1:

| Prefix | Explanation
|--------|------------|
| saml: | This is the SAML V2.0 assertion namespace [SAMLCore]. The prefix is generally elided in mentions of SAML assertion-related elements in text.
| samlp: | This is the SAML V2.0 protocol namespace [SAMLCore]. The prefix is generally elided in mentions of XML protocol-related elements in text.
| md: | This is the SAML V2.0 metadata namespace, defined in a schema [SAMLMeta-xsd].
| ds: | This is the XML Signature namespace [XMLSig].
| xenc: | This is the XML Encryption namespace [XMLEnc].
| xs: | This namespace is defined in the W3C XML Schema specification [Schema1]. In schema listings, this is the default namespace and no prefix is shown. For clarity, the prefix is generally shown in specification text when XML Schema-related constructs are mentioned.