Fix: Issue 43 - Produces wrong signatures

pom.xml

@@ -121,7 +121,7 @@ SPDX-License-Identifier: Apache-2.0
                 <groupId>com.apicatalog</groupId>
                 <artifactId>titanium-json-ld-jre8</artifactId>
               </exclusion>
-            </exclusions>
+            </exclusions>			
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/jakarta.json/jakarta.json-api -->

src/main/java/org/eclipse/tractusx/ssi/lib/jwt/SignedJwtFactory.java

@@ -33,6 +33,7 @@
 import java.net.URI;
 import java.util.Date;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Objects;
 import java.util.stream.Collectors;
@@ -116,10 +117,16 @@ private static SignedJWT createSignedES256Jwt(
 
       var algorithm = JWSAlgorithm.EdDSA;
       var type = JOSEObjectType.JWT;
+
+      // https://w3c.github.io/vc-jws-2020/#json-web-signature-2020
+      var crit = new HashSet<String>();
+      crit.add("b64");
+
       var header =
           new JWSHeader(
-              algorithm, type, null, null, null, null, null, null, null, null, issuer, true, null,
+              algorithm, type, null, crit, null, null, null, null, null, null, issuer, false, null,
               null);
+
       var vc = new SignedJWT(header, claimsSet);
 
       vc.sign(signer);