AES加密CTR模式_aes ctr

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
 
public class AES {
 
    public static final String KEY_ALGORITHM = "AES";
    public static final String CIPHER_ALGORITHM = "AES/CTR/PKCS5Padding";
    public static final String ivParameter = "1234123412341234";
 
    public static String Encrypt(String key, String text) {
        try {
            byte[] keyBytes = key.getBytes();
            IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());
            SecretKeySpec sKeySpec = new SecretKeySpec(keyBytes, KEY_ALGORITHM);
            Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
            cipher.init(Cipher.ENCRYPT_MODE, sKeySpec, iv);
            byte[] encrypted = cipher.doFinal(text.getBytes("utf-8"));
            return new BASE64Encoder().encode(encrypted);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
 
    public static String Decrypt(String Key, String text) {
        try {
            byte[] raw = Key.getBytes("ASCII");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, KEY_ALGORITHM);
            Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
            IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(text);
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original, "utf-8");
            return originalString;
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
 
    }
 
}

如果文章写到这里，那我也太次了！！！

事情的起因是这样的，我需要调用堡垒机的接口，接口的传参是要经过aes加密的，于是乎，我咨询了厂商：

我：请问咱们使用的是哪种aes？

厂商：aes256