NFC security key support

[nishantkumarr7]

I am trying to test Yubikey on my android app, it works fine with empty extensions ("extensions": {},) but after adding "prf" in extensions "NFC security key" option stop showing.

Below JSON is used:

{
"challenge": "Q2hhbGxlbmdlU3RyaW5nRGF0YQ==",
"rpId": "example.com",
"allowCredentials": [
{
"type": "public-key",
"id": "c29tZVVzZXJJRA=="
}
],
"userVerification": "discouraged",
"extensions": {
"prf": {
"eval": {
"first": "c29tZVBhc3N3b3JkMQ=="
}
}
}

For reference first option from below image "NFC security key" is not shown after adding
"prf": {
"eval": {
"first": "c29tZVBhc3N3b3JkMQ=="
}

is there anything else that's need to be added/removed from JSON for proper functioning.

[AdamVe]

Hi, thanks for your question. From the screenshot it looks like you are not using the yubikit-android SDK. Could you share some details about how you call the registration and authentication Webauthn ceremonies?

You can check our integration tests in https://github.com/Yubico/yubikit-android/blob/release/2.8.1/testing/src/main/java/com/yubico/yubikit/testing/fido/extensions/PrfExtensionTests.java where I show how to use the prf extension with our SDK.

[nishantkumarr7]

Screenshot was just for reference and yes i am not using the yubikit-android SDK.

I have created a simple android app. with dependency (implementation 'androidx.credentials:credentials:1.5.0')
In my app for registration using "credentialManager.createCredential(activity, RequestJson)" with above json and for authentication "credentialManager.getCredential(activity, getCredentialRequest)" with authention json.