Wireless Power Consortium


The Qi 1.3 specification makes it necessary to include public key certificates in EPP chargers. These certificates, called “Product Unit Certificates” are specified in the “Authentication Protocol” book of the Qi 1.3 specification (WPC members only).

Information for Manufacturers of Wireless Chargers

A so-called "Product Unit Certificate" must be embedded in wireless chargers to enable them to authenticate with Qi power receivers.

Manufacturers who wish to obtain Product Unit Certificates will need to:

  1. Sign the "Qi Authentication Agreement for a Manufacturer". A reference copy of the agreement can be found on the page " governing documents". Only members of the WPC can sign this agreement.
  2. Procure the Product Unit Certificates from a Manufacturer CA Service Provider.
  3. Inform the WPC's license administrator which Manufacturer CA Service Provider(s) will supply the Product Unit Certificates.

The following companies may provide Product Unit Certificates to manufacturers of wireless chargers that have signed the Qi Authentication Agreement for a Manufacturer.

Manufacturer CA Service Provider
Infineon Technologies AG
Microchip Technology, Inc.
STMicroelectronics International N.V.
Toppan Printing Co.,Ltd.
Shanghai Fudan Microelectronics Group
Tongxin Microelectronics Co., Ltd

See also: PKI Infrastructure for Qi Authentication (WPC members only)

Information for Manufacturer ca Service Providers

The Manufacturer CA Service Provider User Guide explains the procedure and rules for

  1. Signing the "Qi Authentication Agreement for a Manufacturer CA Service Provider"
  2. Submitting a Certificate Signing Request (CSR) to the Root CA
  3. Verification steps that must be taken before submitting a CSR to the Root CA
  4. Verification steps that must be taken before signing Product Unit Certificates

See also: PKI Infrastructure for Qi Authentication (WPC members only)

Manufacturer CA CSR Submission Form

Manufacturer CA Service Providers must use the Manufacturer CA CSR Submission Form to request a certificate from the Root CA Service Provider.

This form must be signed with a smarcard that is provided by the Root CA service provider. Please provide at last 16 days for delivery of this smartcard after the Manufacturer CA service provider has signed the Agreement for a Manufacturer CA Service Provider.

Schedule Root CA Signing Event

The Root CA service provider has scheduled signing events on:

Date of signing event Deadline for submitting a CSR
22-Jun-23 1pm UTC on 21 June
20-Jul-23 1pm UTC on 19 July
24-Aug-23 1pm UTC on 23 August
21-Sep-23 1pm UTC on 20 September
19-Oct-23 1pm UTC on 18 October
23-Nov-23 1pm UTC on 22 November
21-Dec-23 1pm UTC on 20 December
18-Jan-24 1pm UTC on 17 January
22-Feb-24 1pm UTC on 21 February
21-Mar-24 1pm UTC on 20 March
18-Apr-24 1pm UTC on 17 April
23-May-24 1pm UTC on 22 May
20-Jun-24 1pm UTC on 19 June
18-Jul-24 1pm UTC on 17 July

Manufacturer CA Certificates for Testing Purposes

Manufacturer CA Service Providers can obtain certificates for testing purpose from the WPC (please contact the Authentication License Administrator). Product Unit Certificates created with such a certificate for testing purposes must not be used in products.

Root Certificate (WPCCA1)


Root Certificate Hash
Content {TBA}


The WPC may revoke any certificate that is signed by the Root CA or by Manufacturer CAs.

The WPC may revoke any certificate that is signed by the Root CA or by a Manufacturer CA, following the rules and procedure described in Annex B of the authentication agreements. Reference copies of all agreements can be found on the page "governing documents".

Certificate Revocation List

The latest version of CRL was issued on 2021-06-17: wpccrl_CRL0004_-_signed.xml

Explanation of the CRL

The CRL is an XML file. The schema of the XML is specified in CRL_schema.xsd

The CRL is valid only when signed by the Root CA. The CRL will also be signed by one of two representatives of the WPC, as proof that the CRL was reviewed by the WPC.

The latest version of the CRL is published on this page. It replaces all previously signed CRLs.Always use the latest version.

Each revocation references a "reason" and "decision". The decision is a number can be used to lookup the documentation of the decision to revoke that certificate in the revocation administration.

The "procedureID" in the administration is the same as the "decision" in the CRL. See also the CRL revocation reasons and process steps.pdf.

Certificate Practice Statement

The WPC Root CA CPS describes the practices and procedures used to address all the requirements identified for the WPC Root CA Certificate Policy. This document combines both the CP and the CPS and it forms the Certificate Policy and the Certificate Practice Statement (CPS) for the Wireless Power Consortium Root CA.

Subscribers and relying parties can consult this redacted version of the CP/CPS to obtain details of the requirements addressed by its CP and how the CP is implemented by the WPC Root CA.

This document follows the framework for CP and CPS described in ETSI EN 319 411-1 and RFC 3647.


For questions and requests, please use the contact information on the WPC member's website (members only).

Become a member

Become a member

By joining the WPC you will become a key player in shaping and advancing wireless power standards. WPC members gain invaluable insights to compete more successfully and lead the charge in introducing cutting-edge wireless power transfer products to the market.

How to check that a product is Qi Certified

How to check that a product is Qi Certified

To be certain that a product has been tested to Qi certification standards, search for it in our database.