AES加密解密工具

深藏阁楼爱情的钟 2021-09-24 03:24 638阅读 0赞

好久木有来更新了，最近木有在偷懒，最近在自我修炼node与vue，打算修炼成一个既正宗又地道的前端，但是最近经常听到数据安全及加密解密相关的讨论，下面来记录和分享下加密解密的工具：

以下是用AES方式加密解密的工具类：

package com.ying.util;
    
    import java.io.ByteArrayOutputStream;
    import javax.crypto.Cipher;
    import javax.crypto.SecretKey;
    import javax.crypto.spec.SecretKeySpec;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    /** * description:加密解密工具 * @author wxy_jdhk */
    public class AesUtil { 
    	protected static final Logger logger = LoggerFactory.getLogger(AesUtil.class);
    	private static final String AES_KEY_ALGORITHM = "AES";
    	private static final String AES_CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";
    	
    	/** * description: 加密 * @param buff 密钥 * @param data 数据 * @return byte[] 加密后的数据 */
    	public byte[] aesEncrypt(byte[] key,byte[] data) throws SecurityException { 
    		ByteArrayOutputStream baos = null;
    		try { 
    			if (null==key) { 
    				throw new SecurityException("AES key is null");
    			}
    			SecretKey secureKey = new SecretKeySpec(key,AES_KEY_ALGORITHM);
    	        Cipher cipher = Cipher.getInstance(AES_CIPHER_ALGORITHM);
    	        cipher.init(Cipher.ENCRYPT_MODE, secureKey);
    	        return cipher.doFinal(data);
    		} catch(SecurityException e) { 
    			throw new SecurityException(e.getMessage());
    		} catch(Exception e) { 
    			e.printStackTrace();
    			logger.error("encrypt error");
    		}
    		return null;
    	}
    	/** * description: 解密 * @param buff 密钥 * @param data 数据 * @return byte[] 解密后的数据 */
    	public byte[] aesDecrypt(byte[] key,byte[] data) throws SecurityException { 
    		ByteArrayOutputStream baos = null;
    		try { 
    			if (null==key) { 
    				throw new SecurityException("aes key is null");
    			}
    			SecretKey secureKey = new SecretKeySpec(key,AES_KEY_ALGORITHM);
    			Cipher cipher = Cipher.getInstance(AES_CIPHER_ALGORITHM);
    	        cipher.init(Cipher.DECRYPT_MODE, secureKey);
    	        return cipher.doFinal(data);
    		} catch(SecurityException e) { 
    			throw new SecurityException(e.getMessage());
    		} catch(Exception e) { 
    			e.printStackTrace();
    			logger.error("decrypt error");
    		}
    		return null;
    	}
    }