Public Key Infrastructure

Services Australia Public Key Infrastructure (PKI) certificates are one way health professionals get secure access to our online services.

You can no longer log on to HPOS using an Individual PKI certificate. You need to set up a PRODA account so you can continue to access HPOS.

Medicare PKI site certificates will still allow access to our digital health claiming channels, such as Medicare Online, until 14 March 2022.

We issue PKI certificates to healthcare organisations.

Secure Hash Algorithm

PKI certificates use secure hash algorithm (SHA) technology when sending transactions online.

Transactions through your practice management or patient administration software use SHA technology. As these transactions also need PKI site certificates, we issue users SHA-1 or SHA-2 PKI site certificates.

The latest version of some web browsers need SHA-2 technology to authenticate users.

If you need a specific SHA version of a PKI certificate, contact the eBusiness Service Centre.

National Authentication Service for Health PKI certificates

Healthcare providers and supporting organisations must have a National Authentication Service for Health (NASH) PKI certificate to access the My Health Record system. NASH PKI certificates can also be used to access the HI Service, electronic prescribing and secure messaging.

How to apply

Use these forms to apply for a PKI certificate:

Make sure you download the latest forms so your application isn't delayed. There are recent changes to the evidence of identity criteria.

For more information about our services go to:


PKI certificates expire after a specified period of time, depending on which policy your certificate was issued under.

Some software automatically renews your Medicare PKI certificate.

If your software doesn’t automatically renew your Medicare PKI certificate, we’ll send you a letter with information on how to renew before it expires.

PKI policy documents

PKI certificate policies are the rules for how we issue and use PKI certificates. Read the PKI policies and terms and conditions before you use your PKI certificate.

Healthcare Public Directory

The Healthcare Public Directory lists individuals and organisations with active or revoked PKI certificates. For more information go to Certificates Australia.

Our PKI certificates meet the Gatekeeper (Public Key Infrastructure) framework under the International Organisation for Standardisation Health Informatics - Public Key Infrastructure technical specification (ISO/TS 17090).

PKI supporting documents, tools and software

Read how to install the PKI Certificate Manager.


If you need help with your PKI certificate contact us.

Page last updated: 20 September 2021