[FIDO] Support extensions #161
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dainnilsson
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Nov 22, 2024
fido/src/main/java/com/yubico/yubikit/fido/client/BasicWebAuthnClient.java
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Adds support for defined FIDO extensions (see CTAP2.1 and Webauthn specifications). This PR also adds simple framework for adding new extensions, by extending the
Extensionclass and implementing relevant methods.Extension processing happens during
BasicWebauthnClient.makeCredentialandBasicWebauthnClient.getAssertioncalls, based on the creation and request options.Results are exposed through
PublicKeyCredential.getClientExtensionResults().The following extensions are implemented:
A new BasicWebauthnClient constructor takes a list of Extension objects which it will process, by default the list contains defined extensions.
There are instrumented tests for each of the extensions (note that a supporting HW is needed for running the tests).