OIDC Clients must authenticate with the OIDC Provider for several of the supported Endpoints. The OIDC Provider from BankID currently supports two different schemes, both using the HTTP Authorization Header:

• Basic according to OIDC client_secret_basic, OAuth2 Client Password and HTTP Basic Authentication.
• Bearer according to OAuth2 Bearer token usage

See documentation for each Endpoints on supported schemes. Support for other authentication schemes (eg. signature-based schemes) may be added as future options. The required scheme for any OIDC Client is determined when the OIDC Client is configured at the OIDC Provider.