AES工具类

刺骨的言语ヽ痛彻心扉 2022-10-16 03:59 188阅读 0赞

public class AESUtils {
        private static Logger logger = LoggerFactory.getLogger(AESUtils.class);
    
    
        private static final String ENCODE = "utf-8";
        private static final String FORMAT = "AES";
        private static final String CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";
    
    
        public static String encrypt(String content, String key) {
            try {
                byte[] raw = key.getBytes();  //获得密码的字节数组
                SecretKeySpec skey = new SecretKeySpec(raw, FORMAT); //根据密码生成AES密钥
                Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);  //根据指定算法ALGORITHM自成密码器
                cipher.init(Cipher.ENCRYPT_MODE, skey); //初始化密码器，第一个参数为加密(ENCRYPT_MODE)或者解密(DECRYPT_MODE)操作，第二个参数为生成的AES密钥
                byte [] byte_content = content.getBytes(ENCODE); //获取加密内容的字节数组(设置为utf-8)不然内容中如果有中文和英文混合中文就会解密为乱码
                byte [] encode_content = cipher.doFinal(byte_content); //密码器加密数据
                return Base64.encodeBase64String(encode_content); //将加密后的数据转换为字符串返回
            } catch (Exception e) {
                logger.error("AESUtils encrypt Exception",e);
                return null;
            }
        }
        public static String decrypt(String encryptStr, String decryptKey) {
            try {
                byte[] raw = decryptKey.getBytes();  //获得密码的字节数组
                SecretKeySpec skey = new SecretKeySpec(raw, FORMAT); //根据密码生成AES密钥
                Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);  //根据指定算法ALGORITHM自成密码器
                cipher.init(Cipher.DECRYPT_MODE, skey); //初始化密码器，第一个参数为加密(ENCRYPT_MODE)或者解密(DECRYPT_MODE)操作，第二个参数为生成的AES密钥
                byte [] encode_content = Base64.decodeBase64(encryptStr); //把密文字符串转回密文字节数组
                byte [] byte_content = cipher.doFinal(encode_content); //密码器解密数据
                return new String(byte_content,ENCODE); //将解密后的数据转换为字符串返回
            } catch (Exception e) {
                logger.error("AESUtils decrypt Exception",e);
                return null;
            }
        }
    
    
       /* public static void main(String[] args) {
            String origin = "devadmin";
            String encrypt = AESUtils.encrypt(origin, "A-16-Byte-String");
            System.out.println(encrypt);
            String decrypt = AESUtils.decrypt(encrypt,"A-16-Byte-String");
            System.out.println(decrypt);
        }*/
    }