唠嗑:这两天放假,玩的比较嗨,就没有写什么实际代码,放一个以前网上找的加密解密工具类吧,有需要的朋友可以在这里拿哦。
直接上工具类
import lombok.extern.slf4j.Slf4j;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
/**
* 加密工具
*/
@Slf4j
public class AESUtils {
private static String key = "qwertyuiopasdfgh";//密码 随便设置
private static String ivKey = "qwertyuiopasdfgh";//偏移量iv 随便设置
/**
* 加密
*
* @param content
* @param strKey
* @return
* @throws Exception
*/
public static byte[] encrypt(String content, String strKey) throws Exception {
SecretKeySpec skeySpec = getKey(strKey);//构建密钥
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//使用CBC模式,需要一个偏移量iv,可增加加密算法的强度
IvParameterSpec iv = new IvParameterSpec(ivKey.getBytes());
cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
byte[] encrypted = cipher.doFinal(content.getBytes());
return encrypted;
}
/**
* 解密
*
* @param strKey
* @param content
* @return
* @throws Exception
*/
public static String decrypt(byte[] content, String strKey) throws Exception {
SecretKeySpec skeySpec = getKey(strKey);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
IvParameterSpec iv = new IvParameterSpec(ivKey.getBytes());
cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
byte[] original = cipher.doFinal(content);
String originalString = new String(original);
return originalString;
}
private static SecretKeySpec getKey(String strKey) throws Exception {
byte[] arrBTmp = strKey.getBytes();
byte[] arrB = new byte[16]; // 创建一个空的16位字节数组(默认值为0)
for (int i = 0; i < arrBTmp.length && i < arrB.length; i++) {
arrB[i] = arrBTmp[i];
}
SecretKeySpec skeySpec = new SecretKeySpec(arrB, "AES");
return skeySpec;
}
/**
* base 64 encode
*
* @param bytes 待编码的byte[]
* @return 编码后的base 64 code
*/
public static String base64Encode(byte[] bytes) {
return new BASE64Encoder().encode(bytes);
}
/**
* base 64 decode
*
* @param base64Code 待解码的base 64 code
* @return 解码后的byte[]
* @throws Exception
*/
public static byte[] base64Decode(String base64Code) throws Exception {
return new BASE64Decoder().decodeBuffer(base64Code);
}
/**
* AES加密为base 64 code
*
* @param content 待加密的内容
* @return 加密后的base 64 code
* @throws Exception //加密传String类型,返回String类型
*/
public static String aesEncrypt(String content) {
try {
//此处使用BAES64做转码功能,同时能起到2次加密的作用。
String xx = base64Encode(encrypt(content, key));
xx = xx.replace("\r\n", "");//根据具体情况判断,是否需要替换行行
return xx;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "";
}
/**
* 将base 64 code AES解密
*
* @param encryptStr 待解密的base 64 code
* @return 解密后的string //解密传String类型,返回String类型
* @throws Exception
*/
public static String aesDecrypt(String encryptStr) {
try {
return decrypt(base64Decode(encryptStr), key);
} catch (Exception e) {
e.printStackTrace();
log.error("解密失败", e);
}
return "f";
}
public static void main(String[] args) throws Exception {
String en = "789456123bnm";
String xx = aesEncrypt(en);
System.out.println(xx);
String jm = aesDecrypt(xx);
System.out.println(jm);
System.out.println("---------------");
byte[] encrypt = encrypt(en, key);
String decrypt = decrypt(encrypt, key);
System.out.println(decrypt);
}
}
结束语:晚安。