Politecnico di Milano

Politecnico di Milano Shibboleth Identity Provider

The university's own Shibboleth identity provider, publishing its SAML 2.0 EntityDescriptor at https://shibidp.polimi.it/idp/shibboleth over unauthenticated HTTPS. The IDPSSODescriptor advertises Shibboleth 1.0, SAML 1.1 and SAML 2.0 protocol support, scope polimi.it, bilingual mdui:UIInfo, and signing and encryption certificates valid to 2040. This is an authentication surface, not a data API — and it is one of the strongest institution-operated machine-readable surfaces a university has.

Documentation GitHub OpenAPI

Operations 1

GET /idp/shibboleth Retrieve the IdP SAML 2.0 metadata #

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OpenAPI Specification

openapi: 3.1.0
info:
  title: Politecnico di Milano Shibboleth IdP Metadata
  version: '2026-09-01'
  summary: The publicly published SAML 2.0 metadata of the Politecnico di Milano Shibboleth identity provider.
  description: |
    Politecnico di Milano runs its own Shibboleth identity provider, `https://shibidp.polimi.it/idp/shibboleth`,
    and publishes its SAML 2.0 `EntityDescriptor` at that same URL over plain HTTPS GET. A live fetch on
    2026-09-01 returns `application/xml`, entityID `https://shibidp.polimi.it/idp/shibboleth`, an
    `IDPSSODescriptor` advertising `urn:mace:shibboleth:1.0`, `urn:oasis:names:tc:SAML:1.1:protocol` and
    `urn:oasis:names:tc:SAML:2.0:protocol`, a `shibmd:Scope` of `polimi.it`, `mdui:UIInfo` in Italian and
    English, and signing/encryption `KeyDescriptor` certificates valid to 2040.

    The same entityID is present in the **IDEM GARR** Italian academic federation aggregate at
    `https://md.idem.garr.it/metadata/idem-metadata-sha256.xml`, alongside three Politecnico service
    providers — `https://captive.wifi.polimi.it/shibboleth`, `https://collaborative.polimi.it` and
    `https://www.pok.polimi.it`.

    This is an authentication surface, not a data API: it describes where and how to federate with the
    university, and returns no institutional data. It is nevertheless one of the strongest
    institution-operated machine-readable surfaces the university has — the IdP is theirs, the keys are
    theirs, the scope is theirs.

    DERIVED by API Evangelist from live probes.
  contact:
    name: Politecnico di Milano — servizi online
    url: https://aunicalogin.polimi.it/aunicalogin/idem.jsp?lang=EN
  x-operator: institution
  x-operator-evidence: >-
    Host shibidp.polimi.it is under the institution's own registrable domain (polimi.it); the
    EntityDescriptor carries shibmd:Scope polimi.it and mdui:DisplayName "Politecnico di Milano", and the
    entityID appears in the IDEM GARR federation aggregate.
  x-standard: SAML 2.0 metadata (OASIS) / Shibboleth
  x-provenance:
    generated: '2026-09-01'
    method: derived
    source:
      - https://shibidp.polimi.it/idp/shibboleth
      - https://md.idem.garr.it/metadata/idem-metadata-sha256.xml
servers:
  - url: https://shibidp.polimi.it
    description: Politecnico di Milano Shibboleth identity provider
tags:
  - name: Federation
    description: SAML 2.0 metadata publication.
paths:
  /idp/shibboleth:
    get:
      tags: [ Federation ]
      summary: Retrieve the IdP SAML 2.0 metadata
      description: >-
        Returns the EntityDescriptor for entityID https://shibidp.polimi.it/idp/shibboleth. Verified 200
        application/xml on 2026-09-01. No authentication; no parameters.
      operationId: getIdpMetadata
      responses:
        '200':
          description: SAML 2.0 EntityDescriptor.
          content:
            application/xml:
              schema:
                type: string
                contentMediaType: application/xml
              examples:
                entityDescriptor:
                  summary: Live IdP metadata
                  externalValue: ../examples/politecnico-di-milano-shibboleth-idp-metadata.xml
components:
  securitySchemes: {}
security: []