Metadata Service

The HKAF publishes three metadata documents:

Containing all HKAF Member organizations.

Containing IdP and SP which have been approved for consumption by HKAF subscribers from the global eduGAIN metadata source.

Containing HKAF subscribed IdP and SP which have been approved for publishing to the global eduGAIN metadata source.


Metadata documents are prefereably to be accessed by https requests but can also be accessed via http requests.

All metadata documents are signed by HKAF. Members organizations MUST use the public key available at to verify the metadata documents whenever they are retrieved.

To confirm that you have obtained the correct key, please ensure that the file you have downloaded conforms to the following format:

$> openssl x509 -subject -dates -fingerprint -in hkaf-metadata-certificate.pem

subject= /O=Hong Kong Access Federation/CN=HKAF Metadata 
notBefore=Oct 16 07:23:09 2017 GMT
notAfter=Oct 14 07:23:09 2027 GMT SHA1