NFC-118 Only accept signing certificate fields for web-eid:1.1 tokens

Signed-off-by: Sander Kondratjev <sander.kondratjev@nortal.com>

Author: SanderKondratjevNortal

example/src/main/java/eu/webeid/example/security/WebEidAuthenticationProvider.java

@@ -76,10 +76,11 @@ public Authentication authenticate(Authentication auth) throws AuthenticationExc
         try {
             final String nonce = challengeNonceStore.getAndRemove().getBase64EncodedNonce();
             final X509Certificate userCertificate = tokenValidator.validate(authToken, nonce);
-            final String signingCertificate = requireSigningCert
+            boolean isV11 = authToken.getFormat() != null && authToken.getFormat().startsWith("web-eid:1.1");
+            final String signingCertificate = (requireSigningCert && isV11)
                 ? authToken.getUnverifiedSigningCertificate()
                 : null;
-            final List<SupportedSignatureAlgorithm> supportedSignatureAlgorithms = requireSigningCert
+            final List<SupportedSignatureAlgorithm> supportedSignatureAlgorithms = (requireSigningCert && isV11)
                 ? authToken.getSupportedSignatureAlgorithms()
                 : null;