View difference between Paste ID: avmwRNBC and YjxcQuhm

 public static byte[] AES_decrypt(byte[] inputData) throws CryptoException, IOException {
 
 		byte[] keyData = "Hello world".getBytes();
         AESKey key = new AESKey(keyData, 0, 256);
 
         AESDecryptorEngine engine = new AESDecryptorEngine(key);
         PKCS5UnformatterEngine uengine = new PKCS5UnformatterEngine(engine);
 
         ByteArrayInputStream input = new ByteArrayInputStream(inputData);
         BlockDecryptor decryptor = new BlockDecryptor(uengine, input);
         byte[] plaintextAndHash = new byte[1024];
         ByteArrayOutputStream output = new ByteArrayOutputStream();
         int bytesRead=0;
 
         do {
         	bytesRead =decryptor.read(plaintextAndHash);
             if(bytesRead!=-1){
                 output.write(plaintextAndHash,0,bytesRead);
             }
         } while ( bytesRead != -1 );
 
         return output.toByteArray();
     }
 
 	public static byte[] AES_decrypt2(byte[] inputData) throws CryptoException, IOException {
 		byte[] keyData = calculateMD5("Hello world");
 		AESKey aesKey = new AESKey(keyData);
 
 		AESDecryptorEngine engine = new AESDecryptorEngine(aesKey);
 		PKCS5UnformatterEngine uengine = new PKCS5UnformatterEngine(engine);
 
 		ByteArrayInputStream istream = new ByteArrayInputStream(inputData);
 		BlockDecryptor decryptor = new BlockDecryptor(uengine, istream);
 
 		byte[] temp = new byte[100];
 		DataBuffer dbuff = new DataBuffer();
 		int bytesRead = 0;
 
 		for (;;){
 			bytesRead = decryptor.read(temp);
 			dbuff.write(temp, 0, bytesRead);
 			if (bytesRead < 100) break;
 		}
 
 		byte[] plainData = dbuff.getArray();
 		int plainDataLength = plainData.length - SHA1Digest.DIGEST_LENGTH;
 		byte[] decryptedData = new byte[plainDataLength];
 		byte[] hash = new byte[SHA1Digest.DIGEST_LENGTH];
 
 		System.arraycopy(plainData, 0, decryptedData, 0, plainDataLength);
 		System.arraycopy(plainData, plainDataLength, hash, 0, SHA1Digest.DIGEST_LENGTH);
 
 		SHA1Digest digest = new SHA1Digest();
 		digest.update(plainData);
 		byte[] hash2 = digest.getDigest();
 
 		if (!Arrays.equals(hash, hash2)) throw new RuntimeException();
 
 		return decryptedData;
 	}
 
         /*
         Library MD5: http://mobilepit.com/10/compact-md5-class-library-for-j2me-javame-app.html
         */
 	private static byte[] calculateMD5(String input){
 		byte[] plain = input.getBytes();
 		MD5 md5 = new MD5(plain);
 		return md5.doFinal();
 	}