add extension identifier "PRLab"

src/main/java/com/example/rpserver/controller/MakeCredential.java

@@ -16,6 +16,8 @@ import com.webauthn4j.data.*;
 import com.webauthn4j.data.attestation.statement.COSEAlgorithmIdentifier;
 import com.webauthn4j.data.client.challenge.Challenge;
 import com.webauthn4j.data.client.challenge.DefaultChallenge;
+import com.webauthn4j.data.extension.client.AuthenticationExtensionsClientInputs;
+import com.webauthn4j.data.extension.client.RegistrationExtensionClientInput;
 import com.webauthn4j.util.Base64Util;
 import com.webauthn4j.util.HexUtil;
 import com.webauthn4j.validator.attestation.statement.AttestationStatementValidator;
@@ -65,6 +67,8 @@ public class MakeCredential {
 		parameters.add(new PublicKeyCredentialParameters(PublicKeyCredentialType.PUBLIC_KEY, COSEAlgorithmIdentifier.RS256));
 		parameters.add(new PublicKeyCredentialParameters(PublicKeyCredentialType.PUBLIC_KEY, COSEAlgorithmIdentifier.ES256));
 
+		AuthenticationExtensionsClientInputs.BuilderForRegistration builderForRegistration = new AuthenticationExtensionsClientInputs.BuilderForRegistration();
+		AuthenticationExtensionsClientInputs<RegistrationExtensionClientInput> extensions = builderForRegistration.set("PRLab", Boolean.TRUE).build();
 
 
 		PublicKeyCredentialCreationOptions options = new PublicKeyCredentialCreationOptions(
@@ -76,7 +80,7 @@ public class MakeCredential {
 				null,
 				new AuthenticatorSelectionCriteria(attachment.equals("cross-platform")?AuthenticatorAttachment.CROSS_PLATFORM:AuthenticatorAttachment.PLATFORM,null,null,null),
 				conveyance.equals("direct")?AttestationConveyancePreference.DIRECT:AttestationConveyancePreference.NONE,
-				null);
+				extensions);
 
 
 		logger.info("PublicKeyCredentialCreationOptions : {}", options);