前后端AES加密解密,CryptoJS和Java实现

原文链接：https://blog.csdn.net/lsvtogergo/article/details/80804312

前端使用CryptoJS

下载CryptoJS, Github : https://github.com/brix/crypto-js

一、使用CBC模式
1、前端实现
引入JS

//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.CBC,
padding: CryptoJS.pad.Pkcs7
})
console.log('解密:',CryptoJS.enc.Utf8.stringify(dec));
</script>
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结果：

2、后端Java实现

import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
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.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class AES {

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/CBC/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(AlgorithmProvider);
cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivParameterSpec);
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, ivParameterSpec);
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[] = "1234567890ABCDEF1234567890ABCDEf".getBytes("utf-8");//hexStringToBytes("0123456789ABCDEF");
String src = "werty7890";
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();
}
}
}
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结果

二、使用ECB模式
1、前端实现
引入JS

//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>
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结果：

2、后端实现

public class AES {

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[] 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(AlgorithmProvider);
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;
}

private static byte charToByte(char c) {
return (byte) "0123456789ABCDEF".indexOf(c);
}

posted @ 2022-12-15 17:09 枫树湾河桥阅读(2583) 评论(0) 编辑收藏举报

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前后端AES加密解密,CryptoJS和Java实现

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