diff --git a/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/AssertionVerifierServiceImpl.java b/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/AssertionVerifierServiceImpl.java
index c53e6c5b..37fc3ffc 100644
--- a/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/AssertionVerifierServiceImpl.java
+++ b/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/AssertionVerifierServiceImpl.java
@@ -273,11 +273,7 @@ private String calculateThumbprint(String inResponseToAlgorithm, String publicKe
             throws AssertionThumbprintException {
         Base64URL thumbprint;
         try {
-            try {
-                publicKey = new String(Base64.getDecoder().decode(publicKey));
-            } catch (Exception e) {
-                log.log(Level.FINE, "Key not in Base64");
-            }
+            publicKey = getPublicKey(publicKey);
             thumbprint = ThumbprintUtils.compute(inResponseToAlgorithm, JWK.parse(publicKey));
         } catch (JOSEException | ParseException e) {
             String errMsg = String.format("Can not calculate JwkThumbprint: %S", e.getMessage());
@@ -297,4 +293,13 @@ private String calculateThumbprint(String inResponseToAlgorithm, String publicKe
         }
         return calculatedThumbprint;
     }
+
+    private String getPublicKey(String publicKey) {
+        try {
+            publicKey = new String(Base64.getDecoder().decode(publicKey));
+        } catch (Exception e) {
+            log.log(Level.FINE, "Key not in Base64");
+        }
+        return publicKey;
+    }
 }
diff --git a/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/LollipopConsumerRequestValidationServiceImpl.java b/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/LollipopConsumerRequestValidationServiceImpl.java
index e4712b83..9aeed6e2 100644
--- a/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/LollipopConsumerRequestValidationServiceImpl.java
+++ b/core/src/main/java/it/pagopa/tech/lollipop/consumer/service/impl/LollipopConsumerRequestValidationServiceImpl.java
@@ -14,8 +14,11 @@
 import it.pagopa.tech.lollipop.consumer.service.LollipopConsumerRequestValidationService;
 import java.util.Base64;
 import java.util.Map;
+import java.util.logging.Level;
 import java.util.regex.Pattern;
+import lombok.extern.java.Log;
 
+@Log
 public class LollipopConsumerRequestValidationServiceImpl
         implements LollipopConsumerRequestValidationService {
 
@@ -52,7 +55,7 @@ private void validatePublicKey(String publicKey)
         try {
             publicKey = new String(Base64.getDecoder().decode(publicKey.getBytes()));
         } catch (Exception e) {
-            //
+            log.log(Level.FINE, "Key not in Base64");
         }
 
         if (isNotValidPublicKey(publicKey, ECPublicKey.class)
diff --git a/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/config/HttpVerifierConfiguration.java b/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/config/HttpVerifierConfiguration.java
index a860d76e..a95dfa1b 100644
--- a/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/config/HttpVerifierConfiguration.java
+++ b/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/config/HttpVerifierConfiguration.java
@@ -10,7 +10,6 @@
 import it.pagopa.tech.lollipop.consumer.service.LollipopConsumerRequestValidationService;
 import it.pagopa.tech.lollipop.consumer.service.impl.LollipopConsumerRequestValidationServiceImpl;
 import it.pagopa.tech.lollipop.consumer.spring.HttpVerifierHandlerInterceptor;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -21,22 +20,22 @@
 @Configuration
 public class HttpVerifierConfiguration {
 
-    @Autowired private SpringLollipopConsumerRequestConfig springLollipopConsumerRequestConfig;
-
     @Bean
     public LollipopConsumerFactoryHelper lollipopConsumerFactoryHelper(
             HttpMessageVerifierFactory httpMessageVerifierFactory,
             IdpCertProviderFactory idpCertProviderFactory,
-            AssertionServiceFactory assertionServiceFactory) {
+            AssertionServiceFactory assertionServiceFactory,
+            LollipopConsumerRequestValidationService lollipopConsumerRequestValidationService) {
         return new LollipopConsumerFactoryHelper(
                 httpMessageVerifierFactory,
                 idpCertProviderFactory,
                 assertionServiceFactory,
-                getLollipopConsumerRequestValidationService());
+                lollipopConsumerRequestValidationService);
     }
 
     @Bean
-    public LollipopConsumerRequestValidationService getLollipopConsumerRequestValidationService() {
+    public LollipopConsumerRequestValidationService getLollipopConsumerRequestValidationService(
+            SpringLollipopConsumerRequestConfig springLollipopConsumerRequestConfig) {
         return new LollipopConsumerRequestValidationServiceImpl(
                 springLollipopConsumerRequestConfig);
     }
diff --git a/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/converter/LollipopConsumerRequestConverter.java b/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/converter/LollipopConsumerRequestConverter.java
index 5245c351..ec517183 100644
--- a/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/converter/LollipopConsumerRequestConverter.java
+++ b/spring-impl/src/main/java/it/pagopa/tech/lollipop/consumer/spring/converter/LollipopConsumerRequestConverter.java
@@ -12,6 +12,8 @@
 /** Class to be used for conversion of the http requests to be validated */
 public class LollipopConsumerRequestConverter {
 
+    private LollipopConsumerRequestConverter() {}
+
     /**
      * Utility method to be used to generate a LollipopConsumerRequest
      *
diff --git a/spring-impl/src/test/java/it/pagopa/tech/lollipop/consumer/spring/HttpVerifierHandlerInterceptorIntegrationTest.java b/spring-impl/src/test/java/it/pagopa/tech/lollipop/consumer/spring/HttpVerifierHandlerInterceptorIntegrationTest.java
index 4be6c840..c89d6ea3 100644
--- a/spring-impl/src/test/java/it/pagopa/tech/lollipop/consumer/spring/HttpVerifierHandlerInterceptorIntegrationTest.java
+++ b/spring-impl/src/test/java/it/pagopa/tech/lollipop/consumer/spring/HttpVerifierHandlerInterceptorIntegrationTest.java
@@ -43,7 +43,7 @@ public static void startServer() {
     @Autowired private HttpVerifierHandlerInterceptor interceptor;
 
     @Test
-    public void testWithValidRequestReturnsSuccess() {
+    void testWithValidRequestReturnsSuccess() {
         AssertionSimpleClientTestUtils.createExpectationAssertionFound();
 
         String signatureInput =
@@ -93,7 +93,8 @@ public void testWithValidRequestReturnsSuccess() {
         Assertions.assertEquals(200, response.getStatusCodeValue());
     }
 
-    public void testWithinvalidPayloadRequestReturnsUnauthorized() {
+    @Test
+    void testWithinvalidPayloadRequestReturnsUnauthorized() {
         AssertionSimpleClientTestUtils.createExpectationAssertionFound();
 
         String signatureInput =