fix/binary to hex (#19)

Author: a-trzewik

pom.xml

@@ -38,7 +38,7 @@
     <bcpkix.version>1.68</bcpkix.version>
     <okhttp.version>4.9.1</okhttp.version>
     <shedlock.version>4.23.0</shedlock.version>
-    <dgc.lib.version>1.1.1</dgc.lib.version>
+    <dgc.lib.version>1.1.2</dgc.lib.version>
     <!-- plugins -->
     <plugin.checkstyle.version>3.1.2</plugin.checkstyle.version>
     <plugin.sonar.version>3.6.1.1688</plugin.sonar.version>

src/main/java/eu/europa/ec/dgc/businessrule/service/GatewayDataDownloadBtpServiceImpl.java

@@ -3,7 +3,6 @@
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.google.gson.FieldNamingPolicy;
-import com.google.gson.FieldNamingStrategy;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonSyntaxException;
@@ -21,15 +20,13 @@
 import eu.europa.ec.dgc.gateway.connector.dto.ValidationRuleDto;
 import eu.europa.ec.dgc.gateway.connector.model.ValidationRule;
 import eu.europa.ec.dgc.signing.SignedStringMessageParser;
+import eu.europa.ec.dgc.utils.CertificateUtils;
 import java.io.IOException;
-import java.math.BigInteger;
-import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Base64;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -65,6 +62,7 @@ public class GatewayDataDownloadBtpServiceImpl implements GatewayDataDownloadSer
     private final BusinessRuleService businessRuleService;
     private final ValueSetService valueSetService;
     private final CountryListService countryListService;
+    private final CertificateUtils certificateUtils;
 
     @Override
     @Scheduled(fixedDelayString = "${dgc.businessRulesDownload.timeInterval}")
@@ -267,12 +265,7 @@ private boolean checkThumbprintIntegrity(TrustListItemDto trustListItem) {
     private String getCertThumbprint(X509CertificateHolder x509CertificateHolder) {
         try {
             byte[] data = x509CertificateHolder.getEncoded();
-            byte[] certHashBytes = MessageDigest.getInstance("SHA-256").digest(data);
-            String hexString = (new BigInteger(1, certHashBytes)).toString(16);
-            if (hexString.length() == 63) {
-                hexString = "0" + hexString;
-            }
-            return hexString;
+            return certificateUtils.calculateHash(data);
         } catch (NoSuchAlgorithmException | IOException e) {
             log.error("Could not calculate thumbprint of certificate '{}': {}.",
                     x509CertificateHolder.getSubject(), e.getMessage());

src/main/java/eu/europa/ec/dgc/businessrule/utils/BusinessRulesUtils.java

@@ -20,35 +20,27 @@
 
 package eu.europa.ec.dgc.businessrule.utils;
 
+import eu.europa.ec.dgc.utils.CertificateUtils;
 import java.math.BigInteger;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.bouncycastle.util.encoders.Hex;
 import org.springframework.stereotype.Service;
 
 @Slf4j
 @Service
+@RequiredArgsConstructor
 public class BusinessRulesUtils {
+    private final CertificateUtils certificateUtils;
 
     /**
      * returns SHA-256 Thumbprint of the data (hex encoded).
      */
     public String calculateHash(String data) throws NoSuchAlgorithmException {
-        return calculateHash(data.getBytes(StandardCharsets.UTF_8));
+        return certificateUtils.calculateHash(data.getBytes(StandardCharsets.UTF_8));
     }
 
-    /**
-     * returns SHA-256 Thumbprint of the data (hex encoded).
-     */
-    public String calculateHash(byte[] data) throws NoSuchAlgorithmException {
-        byte[] certHashBytes = MessageDigest.getInstance("SHA-256").digest(data);
-        String hexString = new BigInteger(1, certHashBytes).toString(16);
-
-        if (hexString.length() == 63) {
-            hexString = "0" + hexString;
-        }
-
-        return hexString;
-    }
 }