AES加密叫Advanced Encryption Standard，是高級加密標準。

這個標準用來替代原來的DES

優點：

　　import javax.crypto.Cipher;
　　import javax.crypto.spec.SecretKeySpec;

    private static String encrypt(String inputKey, String inputContent) {
        try {
            SecretKeySpec secretKeySpec 
 
= new SecretKeySpec(inputKey.getBytes("UTF-8"), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
            byte[] encodedBytes = cipher.doFinal(inputContent.getBytes("UTF-8"));
            StringBuilder builder 
 
= new StringBuilder();
            for (byte b : encodedBytes) {
                String plainText = Integer.toHexString(0xff & b);
                if (plainText.length() < 2)
                    plainText = "0" + plainText;
                builder.append(plainText);
            }
            return
 
 builder.toString();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
        return "";
    }

如上代碼的正確性有待商榷。

AES加密