code: public static boolean checkHash(Platform platform, byte[] aMsg, int hashPos, int hashCount) {
  		if (hashCount != 2)
  			return false;
  		
  		boolean result = (platform.getUtils().equals(HashType.SHA256.getType(), 0, aMsg, hashPos , 4)  &&
  			    platform.getUtils().equals(HashType.SHA384.getType(), 0, aMsg, hashPos + 1 * 4, 4)); 
  		
  		return result;
  	}
docs: Legacy Client send 2 Hash type : S256 and S384