diff --git a/msp/Org1/admin.context b/msp/Org1/admin.context
new file mode 100644
index 0000000..4e2b42e
Binary files /dev/null and b/msp/Org1/admin.context differ
diff --git a/src/main/java/blockchain/client/CAClientWrapper.java b/src/main/java/blockchain/client/CAClientWrapper.java
index 15e5b71..5df0efb 100644
--- a/src/main/java/blockchain/client/CAClientWrapper.java
+++ b/src/main/java/blockchain/client/CAClientWrapper.java
@@ -1,7 +1,10 @@
 package blockchain.client;
 
 import blockchain.user.UserContext;
-import org.bouncycastle.jcajce.provider.asymmetric.ec.KeyFactorySpi;
+import blockchain.utility.Util;
+import org.apache.log4j.BasicConfigurator;
+import org.apache.log4j.Logger;
+import org.hyperledger.fabric.sdk.Enrollment;
 import org.hyperledger.fabric.sdk.exception.CryptoException;
 import org.hyperledger.fabric.sdk.exception.InvalidArgumentException;
 import org.hyperledger.fabric.sdk.security.CryptoSuite;
@@ -12,14 +15,15 @@ import java.net.MalformedURLException;
 import java.util.Properties;
 
 public class CAClientWrapper {
+    private static Logger logger = Logger.getLogger(CAClientWrapper.class);
     private String caUrl;
     private Properties properties;
     private HFCAClient hfcaClient;
     private UserContext adminContext;
 
-    public void setAdminContext(UserContext adminContext) {
-        this.adminContext = adminContext;
-    }
+    public void setAdminContext(UserContext adminContext) { this.adminContext = adminContext; }
+
+    public UserContext getAdminContext(){ return adminContext; }
 
     public HFCAClient getHfcaClient(){
         return hfcaClient;
@@ -37,11 +41,28 @@ public class CAClientWrapper {
         hfcaClient.setCryptoSuite(cryptoSuite);
     }
 
-    //TODO
-    public UserContext enrollAdmin(String username, String password) throws Exception{
-        UserContext userContext = new UserContext();
+    public UserContext enrollAdmin(String username, String password, String affiliation) throws Exception{
+        BasicConfigurator.configure();
+        UserContext checkAdmin;
+        checkAdmin = Util.readUserContext(affiliation, username);
 
-        return null;
+        //SANITY CHECK
+        if(adminContext.getName().isEmpty()) throw new NullPointerException();
+
+        if(checkAdmin!=null){
+            logger.warn("Admin already enrolled, skip");
+            return checkAdmin;
+        }
+
+        logger.info("Try hfcaClient.enroll");
+        Enrollment enrollment = hfcaClient.enroll(username,password);
+
+        logger.info("Admin enrolled");
+        adminContext.setEnrollment(enrollment);
+
+        logger.info("Write admin in msp directory");
+        Util.writeUserContext(adminContext);
+        return adminContext;
     }
 
 
diff --git a/src/main/java/blockchain/configuration/Config.java b/src/main/java/blockchain/configuration/Config.java
new file mode 100644
index 0000000..0f0b9ee
--- /dev/null
+++ b/src/main/java/blockchain/configuration/Config.java
@@ -0,0 +1,28 @@
+package blockchain.configuration;
+
+public class Config {
+
+    public static final String ORG1_MSP = "Org1MSP";
+
+    public static final String ORG1 = "Org1";
+
+    public static final String ADMIN = "admin";
+
+    public static final String ADMIN_PASSWORD = "adminpw";
+
+    public static final String CA_ORG1_URL = "http://vps577432.ovh.net:7054";
+
+    public static final String ORDERER_URL = "http://vps577432.ovh.net:7050";
+
+    public static final String ORDERER_NAME = "orderer.example.com";
+
+    public static final String CHANNEL_NAME = "mychannel";
+
+    public static final String CHAINCODE_NAME = "mycc";
+
+    public static final String ORG1_PEER_0 = "peer0.org1.example.com";
+
+    public static final String ORG1_PEER_0_URL = "http://vps577432.ovh.net:7051";
+
+
+}
diff --git a/src/main/java/blockchain/utility/Util.java b/src/main/java/blockchain/utility/Util.java
index 6d29293..464c9b1 100644
--- a/src/main/java/blockchain/utility/Util.java
+++ b/src/main/java/blockchain/utility/Util.java
@@ -15,6 +15,8 @@ public class Util {
         ObjectOutputStream out = null;
         FileOutputStream fileOutputStream = null;
         try {
+            logger.info("Write user "+userContext.getName()+" of "+userContext.getAffiliation());
+
             String directoryPath = "msp/" + userContext.getAffiliation();
             String filePath = directoryPath + "/" + userContext.getName() + ".context";
             File directory = new File(directoryPath);
diff --git a/src/test/java/blockchain/client/TestEnrollAdmin.java b/src/test/java/blockchain/client/TestEnrollAdmin.java
new file mode 100644
index 0000000..3b27963
--- /dev/null
+++ b/src/test/java/blockchain/client/TestEnrollAdmin.java
@@ -0,0 +1,40 @@
+package blockchain.client;
+
+import blockchain.configuration.Config;
+import blockchain.user.UserContext;
+import org.hyperledger.fabric.sdk.Enrollment;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class TestEnrollAdmin {
+    @Test
+    public void TestAEnrollAdmin(){
+        String caUrl = Config.CA_ORG1_URL;
+        try {
+            CAClientWrapper caClientWrapper = new CAClientWrapper(caUrl,null);
+
+            UserContext adminContext = new UserContext();
+            adminContext.setName(Config.ADMIN);
+            adminContext.setAffiliation(Config.ORG1);
+            adminContext.setMspId(Config.ORG1_MSP);
+
+            caClientWrapper.setAdminContext(adminContext);
+
+            UserContext verifyUser = caClientWrapper.getAdminContext();
+            assertEquals(Config.ADMIN, verifyUser.getName());
+            assertEquals(Config.ORG1, verifyUser.getAffiliation());
+            assertEquals(Config.ORG1_MSP, verifyUser.getMspId());
+
+            adminContext = caClientWrapper.enrollAdmin(adminContext.getName(),Config.ADMIN_PASSWORD,adminContext.getAffiliation());
+
+            //Check Admin Enrollement
+            Enrollment enrollment = adminContext.getEnrollment();
+            System.out.println("admin cert : "+enrollment.getCert());
+            System.out.println("admin keys : "+enrollment.getKey());
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+
+    }
+}
diff --git a/target/classes/blockchain/client/CAClientWrapper.class b/target/classes/blockchain/client/CAClientWrapper.class
index 6e94daa..9edb457 100644
Binary files a/target/classes/blockchain/client/CAClientWrapper.class and b/target/classes/blockchain/client/CAClientWrapper.class differ
diff --git a/target/classes/blockchain/configuration/Config.class b/target/classes/blockchain/configuration/Config.class
new file mode 100644
index 0000000..2a8480f
Binary files /dev/null and b/target/classes/blockchain/configuration/Config.class differ
diff --git a/target/classes/blockchain/utility/Util.class b/target/classes/blockchain/utility/Util.class
index 5f9ec2d..3a430d4 100644
Binary files a/target/classes/blockchain/utility/Util.class and b/target/classes/blockchain/utility/Util.class differ
diff --git a/target/test-classes/blockchain/client/TestEnrollAdmin.class b/target/test-classes/blockchain/client/TestEnrollAdmin.class
new file mode 100644
index 0000000..83d44dd
Binary files /dev/null and b/target/test-classes/blockchain/client/TestEnrollAdmin.class differ