版权声明：请尊重每个人的努力！ https://blog.csdn.net/IndexMan/article/details/87278030
AES加密算法入门：https://blog.csdn.net/IndexMan/article/details/87284833
第三方crypto.js下载地址：https://download.csdn.net/download/indexman/10957355
项目组对前端发送的关键请求参数有安全要求，不能是明文的。这就涉及到前端加密，后端解密工作。
首先是前端
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Aes Test Page</title>
<!--<script src="/js/crypt_core.js"></script>-->
<script src="/js/crypto-js.js"></script>
<script src="/js/aes.js"></script>
<!--<script src="/js/pad-nopadding.js"></script>-->
</head>
<body>
<script>
var key = '37383234363661376461646131333435';
console.log('密钥：', key);
key = CryptoJS.enc.Hex.parse(key);
//iv = CryptoJS.enc.Hex.parse("30313233343536373839414243444546")
//console.log('偏移量:',CryptoJS.enc.Hex.stringify(iv));
var src = "laoxu123";
console.log('原字符串：', src);
var enc = CryptoJS.AES.encrypt(src, key, {
//iv:iv,
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
})
//console.log('加密:',enc.toString());
var enced = enc.ciphertext.toString()
console.log("加密：", enced);
var dec = CryptoJS.AES.decrypt(CryptoJS.format.Hex.parse(enced), key, {
//iv:iv,
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
})
console.log('解密:', CryptoJS.enc.Utf8.stringify(dec));
</script>
</body>
</html>F12查看运行结果
再看后端
package com.laoxu.springboot.util;
import org.springframework.util.StringUtils;
import sun.misc.BASE64Decoder;
import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.nio.charset.Charset;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;
import java.util.UUID;
/**
* AES工具类
*
* @author xusucheng
* @create 2019-02-13
**/
public class AESUtil {
private static String iv = "0123456789ABCDEF";//偏移量字符串必须是16位 当模式是CBC的时候必须设置偏移量
private static String Algorithm = "AES";
private static String AlgorithmProvider = "AES/ECB/PKCS5Padding"; // 算法/模式/补码方式
public static byte[] generatorKey() throws NoSuchAlgorithmException {
KeyGenerator keyGenerator = KeyGenerator.getInstance(Algorithm);
keyGenerator.init(256);//默认128，获得无政策权限后可为192或256
SecretKey secretKey = keyGenerator.generateKey();
return secretKey.getEncoded();
}
public static IvParameterSpec getIv() throws UnsupportedEncodingException {
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes("utf-8"));
System.out.println("偏移量："+byteToHexString(ivParameterSpec.getIV()));
return ivParameterSpec;
}
public static byte[] encrypt(String src, byte[] key) throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException, InvalidAlgorithmParameterException {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
//IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] cipherBytes = cipher.doFinal(src.getBytes(Charset.forName("utf-8")));
return cipherBytes;
}
public static byte[] decrypt(String src, byte[] key) throws Exception {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
//IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] hexBytes = hexStringToBytes(src);
byte[] plainBytes = cipher.doFinal(hexBytes);
return plainBytes;
}
/**
* 将byte转换为16进制字符串
* @param src
* @return
*/
public static String byteToHexString(byte[] src) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xff;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
sb.append("0");
}
sb.append(hv);
}
return sb.toString();
}
/**
* 将16进制字符串装换为byte数组
* @param hexString
* @return
*/
public static byte[] hexStringToBytes(String hexString) {
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] b = new byte[length];
for (int i = 0; i < length; i++) {
int pos = i * 2;
b[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return b;
}
private static byte charToByte(char c) {
return (byte) "0123456789ABCDEF".indexOf(c);
}
public static void main(String[] args) {
try {
// byte key[] = generatorKey();
// 密钥必须是16的倍数
byte key[] = "782466a7dada1345".getBytes("utf-8");//hexStringToBytes("0123456789ABCDEF");
String src = "laoxu123";
System.out.println("密钥:"+byteToHexString(key));
System.out.println("原字符串:"+src);
String enc = byteToHexString(encrypt(src, key));
System.out.println("加密："+enc);
System.out.println("解密："+new String(decrypt(enc, key), "utf-8"));
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
执行结果：
