added methods to create keys and rotate keys.

pom.xml

@@ -26,6 +26,16 @@
   </dependencies>
   <build>
     <plugins>
+    <plugin>
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>maven-site-plugin</artifactId>
+  <version>3.3</version>
+</plugin>
+<plugin>
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>maven-project-info-reports-plugin</artifactId>
+  <version>2.7</version>
+</plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-assembly-plugin</artifactId>

src/main/java/io/vaultproject/javaclientexample/App.java

@@ -11,6 +11,11 @@
  */
 public class App 
 {
+
+  /* For Reference check out the Hashicorp Vault EaaS learn page:
+		  https://learn.hashicorp.com/vault/encryption-as-a-service/eaas-transit
+		  */
+
     public static void main( String[] args ) throws VaultException
     {
          /* The com.bettercloud.vault driver automatically reads a
@@ -19,11 +24,12 @@ public static void main( String[] args ) throws VaultException
           * These are displayed just to ensure you have the
           * right ones for demo purposes.
           */
+
+
+    	//Create secrets to save
     	 Map<String, String> secrets = new HashMap<String, String>();
   	  	 secrets.put("value", "world");
-
-
-
+
 
         try {
         VaultSecret vault = new VaultSecret();
@@ -33,24 +39,46 @@ public static void main( String[] args ) throws VaultException
         System.out.format( "Write request response : " + writeResponse.getRestResponse().getStatus() +"\n");
 
         //read KV Secret
-        System.out.format( "value key in secret/hello is " + vault.getKvSecret() +"\n");
+        System.out.format( "value secret in secret/hello is " + vault.getKvSecret() +"\n");
+
+       //////////////////////////////////////////////////////////////////////////////////////////////////////
+        //Create Encryption Keys
+        String encryptionKey = "demo";
+        vault.createKeys(encryptionKey);
 
         //Encrypt plaintext
-        String usingKey = "test";
+
         String plainText = "test input";
 
-        Map<String, String> ciphertext = vault.encryptSecret(usingKey, plainText);
+        Map<String, String> ciphertext = vault.encryptSecret(encryptionKey, plainText);
 
         System.out.format( "the encrypted Value is " + ciphertext.get("ciphertext") +"\n");
 
 
         //Decrypt ciphertext
-        String plainTextResponse = vault.decryptSecret(usingKey, ciphertext.get("ciphertext"));
+        String plainTextResponse = vault.decryptSecret(encryptionKey, ciphertext.get("ciphertext"));
+        System.out.format( "the decrypted Value is " + plainTextResponse +"\n");
+
+
+        //Rotate Keys
+        vault.rotateKeys(encryptionKey);
+
+      //Encrypt plaintext after key rotate
+        plainText = "test 2";
+
+        Map<String, String> ciphertext2 = vault.encryptSecret(encryptionKey, plainText);
+
+        System.out.format( "the encrypted Value is " + ciphertext2.get("ciphertext") +"\n");
+
+        //Decrypt ciphertext
+         plainTextResponse = vault.decryptSecret(encryptionKey, ciphertext.get("ciphertext"));
         System.out.format( "the decrypted Value is " + plainTextResponse +"\n");
 
 
         } catch(VaultException e) {
           System.out.println("Exception thrown: " + e);
         }
+
+
     }
 }

src/main/java/io/vaultproject/javaclientexample/VaultSecret.java

@@ -105,6 +105,48 @@ public String decryptSecret(String key, String cipherText){
 
 
 		  }
+
+	public void rotateKeys(String key) {
+				 String transit = "transit/keys/"+key+"/rotate";
+
+				 Map<String, String> empty = new HashMap<String, String>();
+
+		  LogicalResponse writeResponse = null;		   
+		  try {
+
+					    	  // Write operation
+					    	    writeResponse = vault.logical().write(transit, empty);
+
+					    	    System.out.println("keys rotated: " + writeResponse.getRestResponse().getStatus() );
+
+		      } catch(VaultException e) {
+		        System.out.println("Exception thrown: " + e);
+		      }
+
+
+
+
+	}
+
+	public void createKeys(String key) {
+		 String transit = "transit/keys/"+key;
+
+		 Map<String, String> empty = new HashMap<String, String>();
+
+  LogicalResponse writeResponse = null;		   
+  try {
+
+			    	  // Write operation
+			    	    writeResponse = vault.logical().write(transit, empty);
+
+			  //  	    System.out.println("keys created: " + writeResponse.getRestResponse().getStatus() );
+
+      } catch(VaultException e) {
+        System.out.println("Exception thrown: " + e);
+      }
+
+
+	}
 
 
 }