Print out Cipher max key length.

Author: frepond

java-api/src/main/java/com/xapo/micro/payment/encrypt/MCrypt.java

@@ -36,7 +36,7 @@ public MCrypt()
 
     public String encrypt(String secretKey, String text) throws Exception
     {
-    	SecretKeySpec keyspec = new SecretKeySpec(secretKey.getBytes(), "AES");
+    	SecretKeySpec keyspec = new SecretKeySpec(secretKey.getBytes("UTF-8"), "AES");
 
         if(text == null || text.length() == 0)
             throw new Exception("Empty string");
@@ -46,7 +46,7 @@ public String encrypt(String secretKey, String text) throws Exception
         try {
             cipher.init(Cipher.ENCRYPT_MODE, keyspec);
 
-            encrypted = cipher.doFinal(padString(text).getBytes());
+            encrypted = cipher.doFinal(padString(text).getBytes("UTF-8"));
         } catch (Exception e)
         {            
         	e.printStackTrace();           

java-api/src/test/java/com/xapo/micro/payment/encrypt/AESencryptTest.java

@@ -7,6 +7,7 @@
 import org.junit.Test;
 
 import java.security.Security;
+import javax.crypto.Cipher;
 
 public class AESencryptTest {
 
@@ -45,6 +46,10 @@ public void testEncryptJson() throws Exception {
 	public void testEncryptHello() throws Exception {
 		String textToEncrypt = "hello from aes encryption!";
 
+		System.out.println("********************************");
+		System.out.println(Cipher.getMaxAllowedKeyLength("AES"));
+		System.out.println("********************************");
+
 		String encryptedText = aesEncrypt.encrypt(APP_SECRET, textToEncrypt);
 		String expected = "Jr/PhEWZBiqW/iMnoObyPm5M4azsUYLwLxk50Wi9eoo=";
 		assertEquals("encrypted text must be equals ", expected, encryptedText);