diff --git a/README.md b/README.md
index 487c06d..c341369 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # JWTs for Java 
+
 This is not an officially supported Google product
 
 [![CircleCI](https://img.shields.io/circleci/project/github/auth0/java-jwt.svg?style=flat-square)](https://circleci.com/gh/auth0/java-jwt/tree/master)
diff --git a/lib/src/main/java/oicclient/client_auth/ClientSecretJwt.java b/lib/src/main/java/oicclient/client_auth/ClientSecretJwt.java
new file mode 100644
index 0000000..d36ef23
--- /dev/null
+++ b/lib/src/main/java/oicclient/client_auth/ClientSecretJwt.java
@@ -0,0 +1,15 @@
+package oicclient.client_auth;
+
+import oicclient.clientinfo.ClientInfo;
+import java.util.Map;
+
+public class ClientSecretJwt extends JWSAuthenticationMethod{
+
+    protected String chooseAlgorithm(Map<String,String> args) {
+        return chooseAlgorithm("clientSecretJwt", args);
+    }
+
+    protected List<Key> getSigningKey(String algorithm, ClientInfo clientInfo) {
+        return clientInfo.getKeyJar().getSigningKey(alg2KeyType(algorithm), algorithm);
+    }
+}
diff --git a/lib/src/main/java/oicclient/client_auth/JWSAuthenticationMethod.java b/lib/src/main/java/oicclient/client_auth/JWSAuthenticationMethod.java
new file mode 100644
index 0000000..0396df0
--- /dev/null
+++ b/lib/src/main/java/oicclient/client_auth/JWSAuthenticationMethod.java
@@ -0,0 +1,9 @@
+package oicclient.client_auth;
+
+import java.util.Map;
+
+public class JWSAuthenticationMethod {
+
+    protected String chooseAlgorithm(String clientSecretJwt, Map<String, String> args) {
+    }
+}
diff --git a/lib/src/main/java/oicclient/client_auth/PrivateKeyJwt.java b/lib/src/main/java/oicclient/client_auth/PrivateKeyJwt.java
new file mode 100644
index 0000000..9f6531d
--- /dev/null
+++ b/lib/src/main/java/oicclient/client_auth/PrivateKeyJwt.java
@@ -0,0 +1,15 @@
+package oicclient.client_auth;
+
+import oicclient.clientinfo.ClientInfo;
+import java.util.Map;
+
+public class PrivateKeyJwt extends JWSAuthenticationMethod{
+
+    protected String chooseAlgorithm(Map<String,String> args) {
+        return chooseAlgorithm("privateKeyJwt", args);
+    }
+
+    protected List<Key> getSigningKey(String algorithm, ClientInfo clientInfo) {
+        return clientInfo.getKeyJar().getSigningKey(alg2KeyType(algorithm), "", algorithm);
+    }
+}
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