ISV Server对资源开通后的用户名和密码加密

代码调用如下图所示。

/**
* 对资源开通后，返回的用户名和密码进行加密
* @param key 秘钥
* @param str 原文
* @param encryptLength 加密长度
* @return 加密结果
*/
public static String generateSaaSUsernameOrPwd(String key, String str, int encryptLength)
{
String iv = getRandomChars(16);
String afterEncryptStr = "";
try
{
afterEncryptStr = encryptAESCBCEncode(str, key, iv, encryptLength);
}
catch (InvalidKeyException | NoSuchAlgorithmException
| NoSuchPaddingException | InvalidAlgorithmParameterException
| IllegalBlockSizeException | BadPaddingException e)
{
//TODO:异常处理
}
System.out
.println(afterEncryptStr);
return iv + afterEncryptStr;
}

/**
* 随机生成字符串
* @param length 随机字符串的长度
* @return  随机字符串
*/
public static String getRandomChars(int length)
{

String randomChars = "";
SecureRandom random = new SecureRandom();
for (int i = 0; i < length; i++)
{
//字母和数字中随机
if (random.nextInt(2) % 2 == 0)
{
//输出是大写字母还是小写字母
int letterIndex = random.nextInt(2) % 2 == 0 ? 65 : 97;
randomChars += (char) (random.nextInt(26) + letterIndex);
}
else
{
randomChars += String.valueOf(random.nextInt(10));
}
}
return randomChars;
}

/**
* AES CBC 位加密
* @param content 加密内容
* @param key 加密秘钥
* @param iv 向量iv
* @param encryptLength 仅支持128、256长度
* @return 加密结果
* @throws BadPaddingException
* @throws IllegalBlockSizeException
* @throws InvalidAlgorithmParameterException
* @throws NoSuchPaddingException
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
*/
public static String encryptAESCBCEncode(String content, String key,
String iv, int encryptLength)
throws InvalidKeyException, NoSuchAlgorithmException,
NoSuchPaddingException, InvalidAlgorithmParameterException,
IllegalBlockSizeException, BadPaddingException
{
if (StringUtils.isEmpty(content) || StringUtils.isEmpty(key)
|| StringUtils.isEmpty(iv))
{
return null;
}
return base_64(
encryptAESCBC(content.getBytes(), key.getBytes(), iv.getBytes(), encryptLength));
}

/**
*
* AES CBC 256位加密
* @param content 加密内容字节数组
* @param keyBytes 加密字节数组
* @param iv 加密向量字节数组
* @param encryptLength 仅支持128、256长度
* @return 解密后字节内容
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidKeyException
* @throws InvalidAlgorithmParameterException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
public static byte[] encryptAESCBC(byte[] content, byte[] keyBytes,
byte[] iv, int encryptLength)
throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, InvalidAlgorithmParameterException,
IllegalBlockSizeException, BadPaddingException
{

KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
secureRandom.setSeed(keyBytes);
keyGenerator.init(encryptLength, secureRandom);
SecretKey key = keyGenerator.generateKey();
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
byte[] result = cipher.doFinal(content);
return result;

}