AES对称加密工具类(GCM)

import java.io.UnsupportedEncodingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.GCMParameterSpec;
import javax.crypto.spec.SecretKeySpec;

import org.springframework.security.crypto.keygen.KeyGenerators;
import org.springframework.util.Base64Utils;

/**
 * @Description: AES对称加密工具类
 */
public class AESUtils {

	public static byte[] encryptGCM(byte[] data, byte[] key) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException{
	    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
	    GCMParameterSpec gcmParameterSpec = new GCMParameterSpec(128, key);
	    Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
	    cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, gcmParameterSpec);
	    byte[] result = cipher.doFinal(data);
	    return result;
	}

	public static byte[] decryptGCM(byte[] data, byte[] key) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException, InvalidAlgorithmParameterException {
	    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
	    GCMParameterSpec gcmParameterSpec = new GCMParameterSpec(128, key);
		Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
	    cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, gcmParameterSpec);
	    byte[] result = cipher.doFinal(data);
	    return result;
	}

	public static void main(String[] args) throws IllegalBlockSizeException, InvalidKeyException, BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, UnsupportedEncodingException {
	    String data = "Hello World"; // 待加密的原文
	    byte[] key = KeyGenerators.secureRandom(32).generateKey();
	    byte[] ciphertext = AESUtils.encryptGCM(data.getBytes(), key);
	    System.out.println("GCM 模式加密结果（Base64）：" + Base64Utils.encodeToString(ciphertext));
	    byte[] plaintext = AESUtils.decryptGCM(ciphertext, key);
	    System.out.println("解密结果：" + new String(plaintext));
		 
	}
}