AES在项目中的使用

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AES在项目中的使用

Java AES 加解密。

    /*     * 加密方法     */    public static String encrypt(String message){        byte[] unencrypted = message.getBytes(Charset.forName("utf-8"));        byte[] aesKey = "0123456789123456".getBytes();        // 设置加密模式为AES的CBC模式        Cipher cipher = null;        try {            cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        } catch (NoSuchPaddingException e) {            e.printStackTrace();        }        SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");        IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16));        try {            cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);        } catch (InvalidKeyException e) {            e.printStackTrace();        } catch (InvalidAlgorithmParameterException e) {            e.printStackTrace();        }        // 加密        byte[] encrypted = null;        try {            encrypted = cipher.doFinal(unencrypted);        } catch (IllegalBlockSizeException e) {            e.printStackTrace();        } catch (BadPaddingException e) {            e.printStackTrace();        }        // 使用BASE64对加密后的字符串进行编码        String base64Encrypted = new Base64().encodeToString(encrypted);        System.out.println(base64Encrypted);        return base64Encrypted;    }

    /*     * 解密方法     */    public static String decode(String text){        byte[] aesKey = "0123456789123456".getBytes();        Cipher cipher = null;        try {            cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        } catch (NoSuchPaddingException e) {            e.printStackTrace();        }        SecretKeySpec key_spec = new SecretKeySpec(aesKey, "AES");        IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16));        try {            cipher.init(Cipher.DECRYPT_MODE, key_spec, iv);        } catch (InvalidKeyException e) {            e.printStackTrace();        } catch (InvalidAlgorithmParameterException e) {            e.printStackTrace();        }        // 使用BASE64对密文进行解码        byte[] encrypted = Base64.decodeBase64(text);        // 解密        byte[] original = null;        try {            original = cipher.doFinal(encrypted);        } catch (IllegalBlockSizeException e) {            e.printStackTrace();        } catch (BadPaddingException e) {            e.printStackTrace();        }        String str = new String(original);        return str;    }

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