refactor JWS and JWE implementation in SL2.0 module to reuse JWS and JWE specific implementation in other classes

4 files changed, 390 insertions, 159 deletions

diff --git a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/Constants.java b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/Constants.java
index 11fd41fb..74d67d01 100644
--- a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/Constants.java
+++ b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/Constants.java
@@ -7,37 +7,41 @@ public class Constants {
 
   public static final String CONFIG_PROP_VDA_AUTHBLOCK_TRANSFORMATION_ID = CONFIG_PROP_PREFIX
       + ".vda.authblock.transformation.id";
-  
+
   //KeyStore configuration
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_TYPE = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_TYPE =
       CONFIG_PROP_PREFIX + ".security.keystore.type";
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_NAME = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_NAME =
       CONFIG_PROP_PREFIX + ".security.keystore.name";
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_PATH = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_PATH =
       CONFIG_PROP_PREFIX + ".security.keystore.path";
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_PASSWORD = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_PASSWORD =
       CONFIG_PROP_PREFIX + ".security.keystore.password";
-  
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_SIGN_ALIAS = 
+
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_SIGN_ALIAS =
       CONFIG_PROP_PREFIX + ".security.sign.alias";
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_SIGN_PASSWORD = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_SIGN_PASSWORD =
       CONFIG_PROP_PREFIX + ".security.sign.password";
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_ENCRYPTION_ALIAS = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_ENCRYPTION_ALIAS =
       CONFIG_PROP_PREFIX + ".security.encryption.alias";
-  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_ENCRYPTION_PASSWORD = 
+  public static final String CONFIG_PROP_SECURITY_KEYSTORE_KEY_ENCRYPTION_PASSWORD =
       CONFIG_PROP_PREFIX + ".security.encryption.password";
 
   //TrustStore configuration
-  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_TYPE = 
+  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_TYPE =
       CONFIG_PROP_PREFIX + ".security.truststore.type";
-  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_NAME = 
+  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_NAME =
       CONFIG_PROP_PREFIX + ".security.truststore.name";
-  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_PATH = 
+  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_PATH =
       CONFIG_PROP_PREFIX + ".security.truststore.path";
-  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_PASSWORD = 
+  public static final String CONFIG_PROP_SECURITY_TRUSTSTORE_PASSWORD =
       CONFIG_PROP_PREFIX + ".security.truststore.password";
-  
-  
+
+  public static final String CONFIG_PROP_SECURITY_SIG_ALG_RSA =
+      CONFIG_PROP_PREFIX + ".security.sigalg.rsa";
+  public static final String CONFIG_PROP_SECURITY_SIG_ALG_ECC =
+      CONFIG_PROP_PREFIX + ".security.sigalg.ecc";
+
   public static final String CONFIG_PROP_VDA_ENDPOINT_QUALeID_DEFAULT_ELEMENT = "default";
   public static final String CONFIG_PROP_VDA_ENDPOINT_QUALeID_DEFAULT = CONFIG_PROP_VDA_ENDPOINT_QUALeID
       + CONFIG_PROP_VDA_ENDPOINT_QUALeID_DEFAULT_ELEMENT;
diff --git a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/EventCodes.java b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/EventCodes.java
index af155206..62779072 100644
--- a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/EventCodes.java
+++ b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/EventCodes.java
@@ -12,5 +12,5 @@ public class EventCodes {
   public static final int AUTHPROCESS_SL20_ENDPOINT_URL = 4112;
   public static final int AUTHPROCESS_SL20_DATAURL_IP = 4113;
 
-  public static final int AUTHPROCESS_SL20_CONSENT_VALID = 4113;
+  public static final int AUTHPROCESS_SL20_CONSENT_VALID = 4114;
 }
diff --git a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JoseUtils.java b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JoseUtils.java
new file mode 100644
index 00000000..d8c39931
--- /dev/null
+++ b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JoseUtils.java
@@ -0,0 +1,308 @@
+package at.gv.egiz.eaaf.modules.auth.sl20.utils;
+
+import java.io.IOException;
+import java.security.Key;
+import java.security.KeyStore;
+import java.security.Provider;
+import java.security.cert.CertificateEncodingException;
+import java.security.cert.X509Certificate;
+import java.security.interfaces.ECPrivateKey;
+import java.security.interfaces.RSAPrivateKey;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import javax.annotation.Nonnull;
+
+import at.gv.egiz.eaaf.core.exception.EaafKeyUsageException;
+import at.gv.egiz.eaaf.core.exceptions.EaafException;
+import at.gv.egiz.eaaf.core.impl.credential.EaafKeyStoreUtils;
+import at.gv.egiz.eaaf.core.impl.data.Pair;
+import at.gv.egiz.eaaf.core.impl.utils.X509Utils;
+
+import org.apache.commons.lang3.StringUtils;
+import org.jose4j.jca.ProviderContext;
+import org.jose4j.jwa.AlgorithmConstraints;
+import org.jose4j.jws.AlgorithmIdentifiers;
+import org.jose4j.jws.JsonWebSignature;
+import org.jose4j.jwx.Headers;
+import org.jose4j.jwx.JsonWebStructure;
+import org.jose4j.keys.resolvers.X509VerificationKeyResolver;
+import org.jose4j.lang.JoseException;
+import org.springframework.util.Base64Utils;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * {@link JoseUtils} provides static methods JWS and JWE processing.
+ *
+ * @author tlenz
+ *
+ */
+@Slf4j
+public class JoseUtils {
+
+  /**
+   * Create a JWS signature.
+   *
+   * <p>
+   * Use {@link org.jose4j.jws.AlgorithmIdentifiers.RSA_PSS_USING_SHA256} in case
+   * of a RSA based key and
+   * {@link org.jose4j.jws.AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256}
+   * in case of an ECC based key.
+   * </p>
+   *
+   * @param keyStore               KeyStore that should be used
+   * @param keyAlias               Alias of the private key
+   * @param keyPassword            Password to access the key
+   * @param payLoad                PayLoad to sign
+   * @param addFullCertChain       If true the full certificate chain will be
+   *                               added, otherwise only the
+   *                               X509CertSha256Fingerprint is added into JOSE
+   *                               header
+   * @param friendlyNameForLogging FriendlyName for the used KeyStore for logging
+   *                               purposes only
+   * @return Signed PayLoad in serialized form
+   * @throws EaafException In case of a key-access or key-usage error
+   * @throws JoseException In case of a JOSE error
+   */
+  public static String createSignature(@Nonnull Pair<KeyStore, Provider> keyStore,
+      @Nonnull final String keyAlias, @Nonnull final char[] keyPassword,
+      @Nonnull final String payLoad, boolean addFullCertChain,
+      @Nonnull String friendlyNameForLogging) throws EaafException, JoseException {
+    return createSignature(keyStore, keyAlias, keyPassword, payLoad, addFullCertChain, Collections.emptyMap(),
+        AlgorithmIdentifiers.RSA_PSS_USING_SHA256, AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256,
+        friendlyNameForLogging);
+
+  }
+
+  /**
+   * Create a JWS signature.
+   *
+   * <p>
+   * Use {@link org.jose4j.jws.AlgorithmIdentifiers.RSA_PSS_USING_SHA256} in case
+   * of a RSA based key and
+   * {@link org.jose4j.jws.AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256}
+   * in case of an ECC based key.
+   * </p>
+   *
+   * @param keyStore               KeyStore that should be used
+   * @param keyAlias               Alias of the private key
+   * @param keyPassword            Password to access the key
+   * @param payLoad                PayLoad to sign
+   * @param addFullCertChain       If true the full certificate chain will be
+   *                               added, otherwise only the
+   *                               X509CertSha256Fingerprint is added into JOSE
+   *                               header
+   * @param joseHeaders            HeaderName and HeaderValue that should be set
+   *                               into JOSE header
+   * @param friendlyNameForLogging FriendlyName for the used KeyStore for logging
+   *                               purposes only
+   * @return Signed PayLoad in serialized form
+   * @throws EaafException In case of a key-access or key-usage error
+   * @throws JoseException In case of a JOSE error
+   */
+  public static String createSignature(@Nonnull Pair<KeyStore, Provider> keyStore,
+      @Nonnull final String keyAlias, @Nonnull final char[] keyPassword,
+      @Nonnull final String payLoad, boolean addFullCertChain,
+      @Nonnull final Map<String, String> joseHeaders,
+      @Nonnull String friendlyNameForLogging) throws EaafException, JoseException {
+    return createSignature(keyStore, keyAlias, keyPassword, payLoad, addFullCertChain, joseHeaders,
+        AlgorithmIdentifiers.RSA_PSS_USING_SHA256, AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256,
+        friendlyNameForLogging);
+
+  }
+
+  /**
+   * Create a JWS signature.
+   *
+   * @param keyStore               KeyStore that should be used
+   * @param keyAlias               Alias of the private key
+   * @param keyPassword            Password to access the key
+   * @param payLoad                PayLoad to sign
+   * @param addFullCertChain       If true the full certificate chain will be
+   *                               added, otherwise only the
+   *                               X509CertSha256Fingerprint is added into JOSE
+   *                               header
+   * @param joseHeaders            HeaderName and HeaderValue that should be set
+   *                               into JOSE header
+   * @param rsaAlgToUse            Signing algorithm that should be used in case
+   *                               of a signing key based on RSA
+   * @param eccAlgToUse            Signing algorithm that should be used in case
+   *                               of a signing key based on ECC
+   * @param friendlyNameForLogging FriendlyName for the used KeyStore for logging
+   *                               purposes only
+   * @return Signed PayLoad in serialized form
+   * @throws EaafException In case of a key-access or key-usage error
+   * @throws JoseException In case of a JOSE error
+   */
+  public static String createSignature(@Nonnull Pair<KeyStore, Provider> keyStore,
+      @Nonnull final String keyAlias, @Nonnull final char[] keyPassword,
+      @Nonnull final String payLoad, boolean addFullCertChain,
+      @Nonnull final Map<String, String> joseHeaders,
+      @Nonnull final String rsaAlgToUse, @Nonnull final String eccAlgToUse,
+      @Nonnull String friendlyNameForLogging) throws EaafException, JoseException {
+
+    final JsonWebSignature jws = new JsonWebSignature();
+
+    // set payload
+    jws.setPayload(payLoad);
+
+    // set JOSE headers
+    for (final Entry<String, String> el : joseHeaders.entrySet()) {
+      log.trace("Set JOSE header: {} with value: {} into JWS", el.getKey(), el.getValue());
+      jws.setHeader(el.getKey(), el.getValue());
+
+    }
+
+    // set signing information
+    final Pair<Key, X509Certificate[]> signingCred = EaafKeyStoreUtils.getPrivateKeyAndCertificates(
+        keyStore.getFirst(), keyAlias, keyPassword, true, friendlyNameForLogging);
+    jws.setKey(signingCred.getFirst());
+    jws.setAlgorithmHeaderValue(getKeyOperationAlgorithmFromCredential(
+        jws.getKey(), rsaAlgToUse, eccAlgToUse, friendlyNameForLogging));
+
+    // set special provider if required
+    if (keyStore.getSecond() != null) {
+      log.trace("Injecting special Java Security Provider: {}", keyStore.getSecond().getName());
+      final ProviderContext providerCtx = new ProviderContext();
+      providerCtx.getSuppliedKeyProviderContext().setSignatureProvider(
+          keyStore.getSecond().getName());
+      jws.setProviderContext(providerCtx);
+
+    }
+
+    if (addFullCertChain) {
+      jws.setCertificateChainHeaderValue(signingCred.getSecond());
+
+    }
+
+    jws.setX509CertSha256ThumbprintHeaderValue(signingCred.getSecond()[0]);
+
+    return jws.getCompactSerialization();
+
+  }
+
+  /**
+   * Verify a JOSE signature.
+   *
+   * @param serializedContent Serialized content that should be verified
+   * @param trustedCerts      Trusted certificates that should be used for
+   *                          verification
+   * @param constraints       {@link AlgorithmConstraints} for verification
+   * @return {@link JwsResult} object
+   * @throws JoseException In case of a signature verification error
+   * @throws IOException   In case of a general error
+   */
+  public static JwsResult validateSignature(@Nonnull final String serializedContent,
+      @Nonnull final List<X509Certificate> trustedCerts, @Nonnull final AlgorithmConstraints constraints)
+      throws JoseException, IOException {
+    final JsonWebSignature jws = new JsonWebSignature();
+    // set payload
+    jws.setCompactSerialization(serializedContent);
+
+    // set security constrains
+    jws.setAlgorithmConstraints(constraints);
+
+    // load signinc certs
+    Key selectedKey = null;
+    final List<X509Certificate> x5cCerts = jws.getCertificateChainHeaderValue();
+    final String x5t256 = jws.getX509CertSha256ThumbprintHeaderValue();
+    if (x5cCerts != null) {
+      log.debug("Found x509 certificate in JOSE header ... ");
+      log.trace("Sorting received X509 certificates ... ");
+      final List<X509Certificate> sortedX5cCerts = X509Utils.sortCertificates(x5cCerts);
+
+      if (trustedCerts.contains(sortedX5cCerts.get(0))) {
+        selectedKey = sortedX5cCerts.get(0).getPublicKey();
+
+      } else {
+        log.info("Can NOT find JOSE certificate in truststore.");
+        if (log.isDebugEnabled()) {
+          try {
+            log.debug("Cert: {}", Base64Utils.encodeToString(sortedX5cCerts.get(0).getEncoded()));
+
+          } catch (final CertificateEncodingException e) {
+            log.warn("Can not create DEBUG output", e);
+
+          }
+        }
+      }
+
+    } else if (StringUtils.isNotEmpty(x5t256)) {
+      log.debug("Found x5t256 fingerprint in JOSE header .... ");
+      final X509VerificationKeyResolver x509VerificationKeyResolver = new X509VerificationKeyResolver(
+          trustedCerts);
+      selectedKey = x509VerificationKeyResolver.resolveKey(jws, Collections.<JsonWebStructure>emptyList());
+
+    } else {
+      throw new JoseException("JWS contains NO signature certificate or NO certificate fingerprint");
+
+    }
+
+    if (selectedKey == null) {
+      throw new JoseException("Can NOT select verification key for JWS. Signature verification FAILED");
+
+    }
+
+    // set verification key
+    jws.setKey(selectedKey);
+
+    // load payLoad
+    return new JwsResult(
+        jws.verifySignature(),
+        jws.getUnverifiedPayload(),
+        jws.getHeaders(),
+        x5cCerts);
+
+  }
+
+  /**
+   * Select signature algorithm for a given credential.
+   *
+   * @param key                    {@link X509Credential} that will be used for
+   *                               key operations
+   * @param rsaSigAlgorithm        RSA based algorithm that should be used in case
+   *                               of RSA credential
+   * @param ecSigAlgorithm         EC based algorithm that should be used in case
+   *                               of RSA credential
+   * @param friendlyNameForLogging KeyStore friendlyName for logging purposes
+   * @return either the RSA based algorithm or the EC based algorithm
+   * @throws EaafKeyUsageException In case of an unsupported private-key type
+   */
+  private static String getKeyOperationAlgorithmFromCredential(Key key,
+      String rsaSigAlgorithm, String ecSigAlgorithm, String friendlyNameForLogging)
+      throws EaafKeyUsageException {
+    if (key instanceof RSAPrivateKey) {
+      return rsaSigAlgorithm;
+
+    } else if (key instanceof ECPrivateKey) {
+      return ecSigAlgorithm;
+
+    } else {
+      log.warn("Could NOT select the cryptographic algorithm from Private-Key type");
+      throw new EaafKeyUsageException(EaafKeyUsageException.ERROR_CODE_01,
+          friendlyNameForLogging,
+          "Can not select cryptographic algorithm");
+
+    }
+
+  }
+
+  private JoseUtils() {
+
+  }
+
+  @Getter
+  @AllArgsConstructor
+  public static class JwsResult {
+    final boolean valid;
+    final String payLoad;
+    final Headers fullJoseHeader;
+    final List<X509Certificate> x5cCerts;
+
+  }
+}
diff --git a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JsonSecurityUtils.java b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JsonSecurityUtils.java
index dae11370..10cfeafa 100644
--- a/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JsonSecurityUtils.java
+++ b/eaaf_modules/eaaf_module_auth_sl20/src/main/java/at/gv/egiz/eaaf/modules/auth/sl20/utils/JsonSecurityUtils.java
@@ -7,24 +7,38 @@ import java.security.KeyStoreException;
 import java.security.Provider;
 import java.security.cert.CertificateEncodingException;
 import java.security.cert.X509Certificate;
-import java.security.interfaces.ECPrivateKey;
-import java.security.interfaces.RSAPrivateKey;
 import java.util.Collections;
 import java.util.List;
 
 import javax.annotation.Nonnull;
 import javax.annotation.PostConstruct;
 
+import at.gv.egiz.eaaf.core.api.idp.IConfiguration;
+import at.gv.egiz.eaaf.core.exception.EaafKeyAccessException;
+import at.gv.egiz.eaaf.core.exceptions.EaafConfigurationException;
+import at.gv.egiz.eaaf.core.exceptions.EaafException;
+import at.gv.egiz.eaaf.core.impl.credential.EaafKeyStoreFactory;
+import at.gv.egiz.eaaf.core.impl.credential.EaafKeyStoreUtils;
+import at.gv.egiz.eaaf.core.impl.credential.KeyStoreConfiguration;
+import at.gv.egiz.eaaf.core.impl.credential.KeyStoreConfiguration.KeyStoreType;
+import at.gv.egiz.eaaf.core.impl.data.Pair;
+import at.gv.egiz.eaaf.core.impl.utils.X509Utils;
+import at.gv.egiz.eaaf.modules.auth.sl20.Constants;
+import at.gv.egiz.eaaf.modules.auth.sl20.data.VerificationResult;
+import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SL20Exception;
+import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SL20SecurityException;
+import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SlCommandoBuildException;
+import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SlCommandoParserException;
+import at.gv.egiz.eaaf.modules.auth.sl20.utils.JoseUtils.JwsResult;
+
 import org.apache.commons.lang3.StringUtils;
 import org.jose4j.jca.ProviderContext;
 import org.jose4j.jwa.AlgorithmConstraints;
 import org.jose4j.jwa.AlgorithmConstraints.ConstraintType;
 import org.jose4j.jwe.JsonWebEncryption;
 import org.jose4j.jws.AlgorithmIdentifiers;
-import org.jose4j.jws.JsonWebSignature;
-import org.jose4j.jwx.JsonWebStructure;
+import org.jose4j.jwx.HeaderParameterNames;
 import org.jose4j.keys.X509Util;
-import org.jose4j.keys.resolvers.X509VerificationKeyResolver;
 import org.jose4j.lang.JoseException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -36,22 +50,6 @@ import org.springframework.util.Base64Utils;
 import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.databind.JsonNode;
 
-import at.gv.egiz.eaaf.core.api.idp.IConfiguration;
-import at.gv.egiz.eaaf.core.exception.EaafKeyAccessException;
-import at.gv.egiz.eaaf.core.exceptions.EaafConfigurationException;
-import at.gv.egiz.eaaf.core.impl.credential.EaafKeyStoreFactory;
-import at.gv.egiz.eaaf.core.impl.credential.EaafKeyStoreUtils;
-import at.gv.egiz.eaaf.core.impl.credential.KeyStoreConfiguration;
-import at.gv.egiz.eaaf.core.impl.credential.KeyStoreConfiguration.KeyStoreType;
-import at.gv.egiz.eaaf.core.impl.data.Pair;
-import at.gv.egiz.eaaf.core.impl.utils.X509Utils;
-import at.gv.egiz.eaaf.modules.auth.sl20.Constants;
-import at.gv.egiz.eaaf.modules.auth.sl20.data.VerificationResult;
-import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SL20Exception;
-import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SL20SecurityException;
-import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SlCommandoBuildException;
-import at.gv.egiz.eaaf.modules.auth.sl20.exceptions.SlCommandoParserException;
-
 @Service
 public class JsonSecurityUtils implements IJoseTools {
   private static final Logger log = LoggerFactory.getLogger(JsonSecurityUtils.class);
@@ -127,41 +125,16 @@ public class JsonSecurityUtils implements IJoseTools {
   @Override
   public String createSignature(final String payLoad, boolean addFullCertChain) throws SlCommandoBuildException {
     try {
-      final JsonWebSignature jws = new JsonWebSignature();
-
-      // set payload
-      jws.setPayload(payLoad);
-
-      // set basic header
-      jws.setContentTypeHeaderValue(SL20Constants.SL20_CONTENTTYPE_SIGNED_COMMAND);
-
-      // set signing information
-      final Pair<Key, X509Certificate[]> signingCred = EaafKeyStoreUtils.getPrivateKeyAndCertificates(
-          keyStore.getFirst(), getSigningKeyAlias(), getSigningKeyPassword(), true, FRIENDLYNAME_KEYSTORE);
-      jws.setKey(signingCred.getFirst());
-      jws.setAlgorithmHeaderValue(getKeyOperationAlgorithmFromCredential(jws.getKey(), 
-          AlgorithmIdentifiers.RSA_USING_SHA256, AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256));
-      
-      // set special provider if required
-      if (keyStore.getSecond() != null) {
-        log.trace("Injecting special Java Security Provider: {}", keyStore.getSecond().getName());
-        final ProviderContext providerCtx = new ProviderContext();
-        providerCtx.getSuppliedKeyProviderContext().setSignatureProvider(
-            keyStore.getSecond().getName());
-        jws.setProviderContext(providerCtx);
-
-      }
-
-      if (addFullCertChain) {
-        jws.setCertificateChainHeaderValue(signingCred.getSecond());
-
-      }
-
-      jws.setX509CertSha256ThumbprintHeaderValue(signingCred.getSecond()[0]);
-
-      return jws.getCompactSerialization();
+      return JoseUtils.createSignature(keyStore, getSigningKeyAlias(), getSigningKeyPassword(),
+          payLoad, addFullCertChain,
+          Collections.singletonMap(
+              HeaderParameterNames.CONTENT_TYPE,
+              SL20Constants.SL20_CONTENTTYPE_SIGNED_COMMAND),
+          getRsaSigningAlgorithm(),
+          getEccSigningAlgorithm(),
+          FRIENDLYNAME_KEYSTORE);
 
-    } catch (final JoseException | EaafKeyAccessException e) {
+    } catch (final JoseException | EaafException e) {
       log.warn("Can NOT sign SL2.0 command.", e);
       throw new SlCommandoBuildException("Can NOT sign SL2.0 command.", e);
 
@@ -182,61 +155,12 @@ public class JsonSecurityUtils implements IJoseTools {
   public VerificationResult validateSignature(@Nonnull final String serializedContent,
       @Nonnull final List<X509Certificate> trustedCerts, @Nonnull final AlgorithmConstraints constraints)
       throws JoseException, IOException {
-    final JsonWebSignature jws = new JsonWebSignature();
-    // set payload
-    jws.setCompactSerialization(serializedContent);
-
-    // set security constrains
-    jws.setAlgorithmConstraints(constraints);
-
-    // load signinc certs
-    Key selectedKey = null;
-    final List<X509Certificate> x5cCerts = jws.getCertificateChainHeaderValue();
-    final String x5t256 = jws.getX509CertSha256ThumbprintHeaderValue();
-    if (x5cCerts != null) {
-      log.debug("Found x509 certificate in JOSE header ... ");
-      log.trace("Sorting received X509 certificates ... ");
-      final List<X509Certificate> sortedX5cCerts = X509Utils.sortCertificates(x5cCerts);
-
-      if (trustedCerts.contains(sortedX5cCerts.get(0))) {
-        selectedKey = sortedX5cCerts.get(0).getPublicKey();
-
-      } else {
-        log.info("Can NOT find JOSE certificate in truststore.");
-        try {
-          log.debug("Cert: " + Base64Utils.encodeToString(sortedX5cCerts.get(0).getEncoded()));
-
-        } catch (final CertificateEncodingException e) {
-          e.printStackTrace();
-
-        }
-
-      }
-
-    } else if (StringUtils.isNotEmpty(x5t256)) {
-      log.debug("Found x5t256 fingerprint in JOSE header .... ");
-      final X509VerificationKeyResolver x509VerificationKeyResolver = new X509VerificationKeyResolver(
-          trustedCerts);
-      selectedKey = x509VerificationKeyResolver.resolveKey(jws, Collections.<JsonWebStructure>emptyList());
-
-    } else {
-      throw new JoseException("JWS contains NO signature certificate or NO certificate fingerprint");
-
-    }
-
-    if (selectedKey == null) {
-      throw new JoseException("Can NOT select verification key for JWS. Signature verification FAILED");
-
-    }
-
-    // set verification key
-    jws.setKey(selectedKey);
 
-    // load payLoad
+    final JwsResult result = JoseUtils.validateSignature(serializedContent, trustedCerts, constraints);
     return new VerificationResult(
-        mapper.getMapper().readTree(jws.getHeaders().getFullHeaderAsJsonString()), 
-        mapper.getMapper().readTree(jws.getPayload()), 
-        x5cCerts, jws.verifySignature());
+        mapper.getMapper().readTree(result.getFullJoseHeader().getFullHeaderAsJsonString()),
+        mapper.getMapper().readTree(result.getPayLoad()),
+        result.getX5cCerts(), result.isValid());
 
   }
 
@@ -244,7 +168,7 @@ public class JsonSecurityUtils implements IJoseTools {
   @Nonnull
   public VerificationResult validateSignature(@Nonnull final String serializedContent) throws SL20Exception {
     try {
-      final AlgorithmConstraints algConstraints = new AlgorithmConstraints(ConstraintType.WHITELIST,
+      final AlgorithmConstraints algConstraints = new AlgorithmConstraints(ConstraintType.PERMIT,
           SL20Constants.SL20_ALGORITHM_WHITELIST_SIGNING
               .toArray(new String[SL20Constants.SL20_ALGORITHM_WHITELIST_SIGNING.size()]));
 
@@ -254,7 +178,7 @@ public class JsonSecurityUtils implements IJoseTools {
 
       if (!result.isValidSigned()) {
         log.info("JWS signature invalide. Stopping authentication process ...");
-        log.debug("Received JWS msg: " + serializedContent);
+        log.debug("Received JWS msg: {}", serializedContent);
         throw new SL20SecurityException("JWS signature invalide.");
 
       }
@@ -281,11 +205,11 @@ public class JsonSecurityUtils implements IJoseTools {
 
       // set security constrains
       receiverJwe.setAlgorithmConstraints(
-          new AlgorithmConstraints(ConstraintType.WHITELIST,
+          new AlgorithmConstraints(ConstraintType.PERMIT,
               SL20Constants.SL20_ALGORITHM_WHITELIST_KEYENCRYPTION
                   .toArray(new String[SL20Constants.SL20_ALGORITHM_WHITELIST_KEYENCRYPTION.size()])));
       receiverJwe.setContentEncryptionAlgorithmConstraints(
-          new AlgorithmConstraints(ConstraintType.WHITELIST, SL20Constants.SL20_ALGORITHM_WHITELIST_ENCRYPTION
+          new AlgorithmConstraints(ConstraintType.PERMIT, SL20Constants.SL20_ALGORITHM_WHITELIST_ENCRYPTION
               .toArray(new String[SL20Constants.SL20_ALGORITHM_WHITELIST_ENCRYPTION.size()])));
 
       // set payload
@@ -304,7 +228,7 @@ public class JsonSecurityUtils implements IJoseTools {
         receiverJwe.setProviderContext(providerCtx);
 
       }
-      
+
       // validate key from header against key from config
       final List<X509Certificate> x5cCerts = receiverJwe.getCertificateChainHeaderValue();
       final String x5t256 = receiverJwe.getX509CertSha256ThumbprintHeaderValue();
@@ -331,7 +255,7 @@ public class JsonSecurityUtils implements IJoseTools {
         final String certFingerPrint = X509Util.x5tS256(encryptionCred.getSecond()[0]);
         if (!certFingerPrint.equals(x5t256)) {
           log.info("X5t256 from JOSE header does NOT match encryption certificate");
-          log.debug("X5t256 from JOSE header: " + x5t256 + " Encrytption cert: " + certFingerPrint);
+          log.debug("X5t256 from JOSE header: {} Encrytption cert: {}", x5t256, certFingerPrint);
           throw new SL20Exception("sl20.05",
               new Object[] { "X5t256 from JOSE header does NOT match encryption certificate" });
 
@@ -346,7 +270,7 @@ public class JsonSecurityUtils implements IJoseTools {
 
       // set key
       receiverJwe.setKey(encryptionCred.getFirst());
-      
+
       // decrypt payload
       return mapper.getMapper().readTree(receiverJwe.getPlaintextString());
 
@@ -424,33 +348,6 @@ public class JsonSecurityUtils implements IJoseTools {
     return config;
   }
 
-  /**
-   * Select signature algorithm for a given credential.
-   *
-   * @param key     {@link X509Credential} that will be used for key operations
-   * @param rsaSigAlgorithm RSA based algorithm that should be used in
-   *                        case of RSA credential
-   * @param ecSigAlgorithm  EC based algorithm that should be used in case
-   *                        of RSA credential
-   * @return either the RSA based algorithm or the EC based algorithm
-   * @throws SlCommandoBuildException In case of an unsupported credential
-   */
-  private static String getKeyOperationAlgorithmFromCredential(Key key,
-      String rsaSigAlgorithm, String ecSigAlgorithm) throws SlCommandoBuildException {
-    if (key instanceof RSAPrivateKey) {
-      return rsaSigAlgorithm;
-
-    } else if (key instanceof ECPrivateKey) {
-      return ecSigAlgorithm;
-
-    } else {
-      log.warn("Could NOT evaluate the Private-Key type from do select algorithm");
-      throw new SlCommandoBuildException("Could NOT evaluate the Private-Key type from do select algorithm");
-    
-    }
-
-  }
-  
   private String getSigningKeyAlias() {
     String value = authConfig.getBasicConfiguration(Constants.CONFIG_PROP_SECURITY_KEYSTORE_KEY_SIGN_ALIAS);
     if (value != null) {
@@ -490,4 +387,26 @@ public class JsonSecurityUtils implements IJoseTools {
     return null;
   }
 
+  private String getRsaSigningAlgorithm() {
+    String value = authConfig.getBasicConfiguration(Constants.CONFIG_PROP_SECURITY_SIG_ALG_RSA,
+        AlgorithmIdentifiers.RSA_PSS_USING_SHA256);
+    if (value != null) {
+      value = value.trim();
+    }
+
+    return value;
+
+  }
+
+  private String getEccSigningAlgorithm() {
+    String value = authConfig.getBasicConfiguration(Constants.CONFIG_PROP_SECURITY_SIG_ALG_ECC,
+        AlgorithmIdentifiers.ECDSA_USING_P256_CURVE_AND_SHA256);
+    if (value != null) {
+      value = value.trim();
+    }
+
+    return value;
+
+  }
+
 }