首先項(xiàng)目是基于vue開發(fā)的項(xiàng)目
1、DES加密
前端
需要引入js
import cryptoJs from 'crypto-js'
// DES加密
export const encryptDes = (message, key) => {
return cryptoJs.DES.encrypt(message, cryptoJs.enc.Utf8.parse(key), {
mode: cryptoJs.mode.ECB,
padding: cryptoJs.pad.Pkcs7
}).toString()
}
后臺(tái)
package com.huihui.until;
import java.security.SecureRandom;
import java.util.Scanner;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import org.apache.commons.codec.binary.Base64;
/**
* <b>類說明：DES</b>
* <p>
* <b>詳細(xì)描述：</b>
* @since 2019年3月31日 下午17:00:16
*/
public class DESCryptUtil {
private static final String DES = "DES";
public static final String desKey = "ba54ee44";
public static String doEncrypt(String plainMessage, String hexDesKey) throws Exception {
byte desKey[] = hexDesKey.getBytes();
byte desPlainMsg[] = plainMessage.getBytes();
return Base64.encodeBase64URLSafeString(desCrypt(desKey, desPlainMsg, Cipher.ENCRYPT_MODE));
}
/**
* 獲取解密后的字符串
* @param hexEncryptMessage
* @param hexDesKey
* @return
* @throws Exception
*/
public static String doDecrypt(String hexEncryptMessage, String hexDesKey) throws Exception{
if (hexEncryptMessage == null) {
return null;
}
byte desKey[] = hexDesKey.getBytes();
byte desPlainMsg[] = Base64.decodeBase64(hexEncryptMessage);
return new String(desCrypt(desKey, desPlainMsg, Cipher.DECRYPT_MODE));
}
/**
* 獲取解密后的數(shù)組
* @param desPlainMsg
* @param hexDesKey
* @return
* @throws Exception
*/
public static byte[] doDecryptByte(byte[] desPlainMsg, String hexDesKey) throws Exception{
if (desPlainMsg == null) {
return null;
}
byte desKey[] = hexDesKey.getBytes();
return desCrypt(desKey, desPlainMsg, Cipher.DECRYPT_MODE);
}
private static byte[] desCrypt(byte[] desKey, byte[] desPlainMsg, int CipherMode) throws Exception{
try {
SecureRandom sr = new SecureRandom();
DESKeySpec dks = new DESKeySpec(desKey);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
javax.crypto.SecretKey key = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(DES);
cipher.init(CipherMode, key, sr);
return cipher.doFinal(desPlainMsg);
} catch (Exception e) {
String message = "";
if (CipherMode == Cipher.ENCRYPT_MODE) {
message = "DES\u52A0\u5BC6\u5931\u8D25";
} else {
message = "DES\u89E3\u5BC6\u5931\u8D25";
}
throw new Exception(message, e);
}
}
/**
* 獲取8位的key
* @param str
* @return
*/
public static String processString(String str) {
if(str==null||"".equals(str)) {
return "";
}
StringBuilder sb = new StringBuilder();
for(int i=0;i<8;i++) {
int index = i<<2&(32-i);
sb.append(str.charAt(index));
}
return sb.toString();
}
public static void main(String[] args) throws Exception{
DESCryptUtil se=new DESCryptUtil();
for (int i = 0; i < 5; i++) {
Scanner scanner=new Scanner(System.in);
/*
* 加密
*/
System.out.println("請(qǐng)輸入要加密的內(nèi)容:");
String content = scanner.next();
System.out.println("加密后的密文是:"+se.doEncrypt(content, desKey));
/*
* 解密
*/
System.out.println("請(qǐng)輸入要解密的內(nèi)容:");
content = scanner.next();
System.out.println("解密后的明文是:"+se.doDecrypt(content, desKey));
}
}
}
2 RSA加密解密
這是我是在在線生成公鑰私鑰的網(wǎng)站中生成了自己的公鑰私鑰用來測(cè)試
前臺(tái)
import JsEncrypt from 'jsencrypt'
// RSA加密
export function encryptRsa(publickey, message) {
const rsa = new JsEncrypt()
rsa.setPublicKey(publickey)
return rsa.encrypt(message)
}
后臺(tái)
package com.huihui.until;
import org.apache.commons.codec.binary.Base64;
import com.googosoft.config.GlobalConstants;
import javax.crypto.Cipher;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;
public class RSAUtil {
private static Map<Integer, String> keyMap = new HashMap<Integer, String>(); //用于封裝隨機(jī)產(chǎn)生的公鑰與私鑰
public static void main(String[] args) throws Exception {
//生成公鑰和私鑰
genKeyPair();
//加密字符串
String message = "df723820";
//GlobalConstants.PUBLICKEY 公鑰加密
String messageEn = encrypt(message,GlobalConstants.PUBLICKEY);
System.out.println(message + "\t加密后的字符串為:" + messageEn);
//GlobalConstants.PRIVATEKEY 私鑰解密
String messageDe = decrypt(messageEn,GlobalConstants.PRIVATEKEY);
System.out.println("還原后的字符串為:" + messageDe);
}
/**
* 隨機(jī)生成密鑰對(duì)
* @throws NoSuchAlgorithmException
*/
public static void genKeyPair() throws NoSuchAlgorithmException {
// KeyPairGenerator類用于生成公鑰和私鑰對(duì)，基于RSA算法生成對(duì)象
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
// 初始化密鑰對(duì)生成器，密鑰大小為96-1024位
keyPairGen.initialize(1024,new SecureRandom());
// 生成一個(gè)密鑰對(duì)，保存在keyPair中
KeyPair keyPair = keyPairGen.generateKeyPair();
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); // 得到私鑰
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic(); // 得到公鑰
String publicKeyString = new String(Base64.encodeBase64(publicKey.getEncoded()));
// 得到私鑰字符串
String privateKeyString = new String(Base64.encodeBase64((privateKey.getEncoded())));
// 將公鑰和私鑰保存到Map
keyMap.put(0,publicKeyString); //0表示公鑰
keyMap.put(1,privateKeyString); //1表示私鑰
}
/**
* RSA公鑰加密
*
* @param str
* 加密字符串
* @param publicKey
* 公鑰
* @return 密文
* @throws Exception
* 加密過程中的異常信息
*/
public static String encrypt( String str, String publicKey ) throws Exception{
//base64編碼的公鑰
byte[] decoded = Base64.decodeBase64(publicKey);
RSAPublicKey pubKey = (RSAPublicKey) KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(decoded));
//RSA加密
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
String outStr = Base64.encodeBase64String(cipher.doFinal(str.getBytes("UTF-8")));
return outStr;
}
/**
* RSA私鑰解密
*
* @param str
* 加密字符串
* @param privateKey
* 私鑰
* @return 銘文
* @throws Exception
* 解密過程中的異常信息
*/
public static String decrypt(String str, String privateKey) throws Exception{
//64位解碼加密后的字符串
byte[] inputByte = Base64.decodeBase64(str.getBytes("UTF-8"));
//base64編碼的私鑰
byte[] decoded = Base64.decodeBase64(privateKey);
RSAPrivateKey priKey = (RSAPrivateKey) KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(decoded));
//RSA解密
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, priKey);
String outStr = new String(cipher.doFinal(inputByte));
return outStr;
}
}
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文章來源：csdn
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