Base64Utils
package com.zhhgyj.zhmall.core.util;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
/**
* BASE64编码解码工具包
*/
public class Base64Utils {
/** */
/**
* 文件读取缓冲区大小
*/
private static final int CACHE_SIZE = 1024;
/** */
/**
* <p>
* BASE64字符串解码为二进制数据
* </p>
*
* @param base64
* @return
* @throws Exception
*/
public static byte[] decode(String base64) throws Exception {
return Base64.decode(base64);
}
/** */
/**
* <p>
* 二进制数据编码为BASE64字符串
* </p>
*
* @param bytes
* @return
* @throws Exception
*/
public static String encode(byte[] bytes) throws Exception {
return new String(Base64.encode(bytes));
}
/** */
/**
* <p>
* 将文件编码为BASE64字符串
* </p>
* <p>
* 大文件慎用，可能会导致内存溢出
* </p>
*
* @param filePath
* 文件绝对路径
* @return
* @throws Exception
*/
public static String encodeFile(String filePath) throws Exception {
byte[] bytes = fileToByte(filePath);
return encode(bytes);
}
/** */
/**
* <p>
* BASE64字符串转回文件
* </p>
*
* @param filePath
* 文件绝对路径
* @param base64
* 编码字符串
* @throws Exception
*/
public static void decodeToFile(String filePath, String base64) throws Exception {
byte[] bytes = decode(base64);
byteArrayToFile(bytes, filePath);
}
/** */
/**
* <p>
* 文件转换为二进制数组
* </p>
*
* @param filePath
* 文件路径
* @return
* @throws Exception
*/
public static byte[] fileToByte(String filePath) throws Exception {
byte[] data = new byte[0];
File file = new File(filePath);
if (file.exists()) {
FileInputStream in = new FileInputStream(file);
ByteArrayOutputStream out = new ByteArrayOutputStream(2048);
byte[] cache = new byte[CACHE_SIZE];
int nRead = 0;
while ((nRead = in.read(cache)) != -1) {
out.write(cache, 0, nRead);
out.flush();
}
out.close();
in.close();
data = out.toByteArray();
}
return data;
}
/** */
/**
* <p>
* 二进制数据写文件
* </p>
*
* @param bytes
* 二进制数据
* @param filePath
* 文件生成目录
*/
public static void byteArrayToFile(byte[] bytes, String filePath) throws Exception {
InputStream in = new ByteArrayInputStream(bytes);
File destFile = new File(filePath);
if (!destFile.getParentFile().exists()) {
destFile.getParentFile().mkdirs();
}
destFile.createNewFile();
OutputStream out = new FileOutputStream(destFile);
byte[] cache = new byte[CACHE_SIZE];
int nRead = 0;
while ((nRead = in.read(cache)) != -1) {
out.write(cache, 0, nRead);
out.flush();
}
out.close();
in.close();
}
}
RSAUtils
package com.zhhgyj.zhmall.core.util;
import java.io.ByteArrayOutputStream;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
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;
import javax.crypto.Cipher;
/** */
/**
* <p>
* RSA公钥/私钥/签名工具包
* </p>
* <p>
* 罗纳德·李维斯特（Ron [R]ivest）、阿迪·萨莫尔（Adi [S]hamir）和伦纳德·阿德曼（Leonard [A]dleman）
* </p>
* <p>
* 字符串格式的密钥在未在特殊说明情况下都为BASE64编码格式<br/>
* 由于非对称加密速度极其缓慢，一般文件不使用它来加密而是使用对称加密，<br/>
* 非对称加密算法可以用来对对称加密的密钥加密，这样保证密钥的安全也就保证了数据的安全
* </p>
*/
public class RSAUtils {
/** */
/**
* 加密算法RSA
*/
public static final String KEY_ALGORITHM = "RSA";
/** */
/**
* 签名算法
*/
public static final String SIGNATURE_ALGORITHM = "MD5withRSA";
/** */
/**
* 获取公钥的key
*/
private static final String PUBLIC_KEY = "RSAPublicKey";
/** */
/**
* 获取私钥的key
*/
private static final String PRIVATE_KEY = "RSAPrivateKey";
/** */
/**
* RSA最大加密明文大小
*/
private static final int MAX_ENCRYPT_BLOCK = 117;
/** */
/**
* RSA最大解密密文大小
*/
private static final int MAX_DECRYPT_BLOCK = 128;
/** */
/**
* <p>
* 生成密钥对(公钥和私钥)
* </p>
*
* @return
* @throws Exception
*/
public static Map<String, Object> genKeyPair() throws Exception {
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);
keyPairGen.initialize(1024);
KeyPair keyPair = keyPairGen.generateKeyPair();
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
Map<String, Object> keyMap = new HashMap<String, Object>(2);
keyMap.put(PUBLIC_KEY, publicKey);
keyMap.put(PRIVATE_KEY, privateKey);
return keyMap;
}
/** */
/**
* <p>
* 用私钥对信息生成数字签名
* </p>
*
* @param data
* 已加密数据
* @param privateKey
* 私钥(BASE64编码)
*
* @return
* @throws Exception
*/
public static String sign(byte[] data, String privateKey) throws Exception {
byte[] keyBytes = Base64Utils.decode(privateKey);
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
PrivateKey privateK = keyFactory.generatePrivate(pkcs8KeySpec);
Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
signature.initSign(privateK);
signature.update(data);
return Base64Utils.encode(signature.sign());
}
/** */
/**
* <p>
* 校验数字签名
* </p>
*
* @param data
* 已加密数据
* @param publicKey
* 公钥(BASE64编码)
* @param sign
* 数字签名
*
* @return
* @throws Exception
*
*/
public static boolean verify(byte[] data, String publicKey, String sign) throws Exception {
byte[] keyBytes = Base64Utils.decode(publicKey);
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
PublicKey publicK = keyFactory.generatePublic(keySpec);
Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
signature.initVerify(publicK);
signature.update(data);
return signature.verify(Base64Utils.decode(sign));
}
/** */
/**
* <P>
* 私钥解密
* </p>
*
* @param encryptedData
* 已加密数据
* @param privateKey
* 私钥(BASE64编码)
* @return
* @throws Exception
*/
public static byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey) throws Exception {
byte[] keyBytes = Base64Utils.decode(privateKey);
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key privateK = keyFactory.generatePrivate(pkcs8KeySpec);
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.DECRYPT_MODE, privateK);
int inputLen = encryptedData.length;
ByteArrayOutputStream out = new ByteArrayOutputStream();
int offSet = 0;
byte[] cache;
int i = 0;
// 对数据分段解密
while (inputLen - offSet > 0) {
if (inputLen - offSet > MAX_DECRYPT_BLOCK) {
cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK);
} else {
cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet);
}
out.write(cache, 0, cache.length);
i++;
offSet = i * MAX_DECRYPT_BLOCK;
}
byte[] decryptedData = out.toByteArray();
out.close();
return decryptedData;
}
/** */
/**
* <p>
* 公钥解密
* </p>
*
* @param encryptedData
* 已加密数据
* @param publicKey
* 公钥(BASE64编码)
* @return
* @throws Exception
*/
public static byte[] decryptByPublicKey(byte[] encryptedData, String publicKey) throws Exception {
byte[] keyBytes = Base64Utils.decode(publicKey);
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key publicK = keyFactory.generatePublic(x509KeySpec);
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.DECRYPT_MODE, publicK);
int inputLen = encryptedData.length;
ByteArrayOutputStream out = new ByteArrayOutputStream();
int offSet = 0;
byte[] cache;
int i = 0;
// 对数据分段解密
while (inputLen - offSet > 0) {
if (inputLen - offSet > MAX_DECRYPT_BLOCK) {
cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK);
} else {
cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet);
}
out.write(cache, 0, cache.length);
i++;
offSet = i * MAX_DECRYPT_BLOCK;
}
byte[] decryptedData = out.toByteArray();
out.close();
return decryptedData;
}
/** */
/**
* <p>
* 公钥加密
* </p>
*
* @param data
* 源数据
* @param publicKey
* 公钥(BASE64编码)
* @return
* @throws Exception
*/
public static byte[] encryptByPublicKey(byte[] data, String publicKey) throws Exception {
byte[] keyBytes = Base64Utils.decode(publicKey);
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key publicK = keyFactory.generatePublic(x509KeySpec);
// 对数据加密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, publicK);
int inputLen = data.length;
ByteArrayOutputStream out = new ByteArrayOutputStream();
int offSet = 0;
byte[] cache;
int i = 0;
// 对数据分段加密
while (inputLen - offSet > 0) {
if (inputLen - offSet > MAX_ENCRYPT_BLOCK) {
cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK);
} else {
cache = cipher.doFinal(data, offSet, inputLen - offSet);
}
out.write(cache, 0, cache.length);
i++;
offSet = i * MAX_ENCRYPT_BLOCK;
}
byte[] encryptedData = out.toByteArray();
out.close();
return encryptedData;
}
/** */
/**
* <p>
* 私钥加密
* </p>
*
* @param data
* 源数据
* @param privateKey
* 私钥(BASE64编码)
* @return
* @throws Exception
*/
public static byte[] encryptByPrivateKey(byte[] data, String privateKey) throws Exception {
byte[] keyBytes = Base64Utils.decode(privateKey);
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key privateK = keyFactory.generatePrivate(pkcs8KeySpec);
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, privateK);
int inputLen = data.length;
ByteArrayOutputStream out = new ByteArrayOutputStream();
int offSet = 0;
byte[] cache;
int i = 0;
// 对数据分段加密
while (inputLen - offSet > 0) {
if (inputLen - offSet > MAX_ENCRYPT_BLOCK) {
cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK);
} else {
cache = cipher.doFinal(data, offSet, inputLen - offSet);
}
out.write(cache, 0, cache.length);
i++;
offSet = i * MAX_ENCRYPT_BLOCK;
}
byte[] encryptedData = out.toByteArray();
out.close();
return encryptedData;
}
/** */
/**
* <p>
* 获取私钥
* </p>
*
* @param keyMap
* 密钥对
* @return
* @throws Exception
*/
public static String getPrivateKey(Map<String, Object> keyMap) throws Exception {
Key key = (Key) keyMap.get(PRIVATE_KEY);
return Base64Utils.encode(key.getEncoded());
}
/** */
/**
* <p>
* 获取公钥
* </p>
*
* @param keyMap
* 密钥对
* @return
* @throws Exception
*/
public static String getPublicKey(Map<String, Object> keyMap) throws Exception {
Key key = (Key) keyMap.get(PUBLIC_KEY);
return Base64Utils.encode(key.getEncoded());
}
/**
* java端公钥加密
*/
public static String encryptedDataOnJava(String data, String PUBLICKEY) {
try {
data = Base64Utils.encode(encryptByPublicKey(data.getBytes(), PUBLICKEY));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return data;
}
/**
* java端私钥解密
*/
public static String decryptDataOnJava(String data, String PRIVATEKEY) {
String temp = "";
try {
byte[] rs = Base64Utils.decode(data);
temp = new String(RSAUtils.decryptByPrivateKey(rs, PRIVATEKEY),"UTF-8"); //以utf-8的方式生成字符串
} catch (Exception e) {
e.printStackTrace();
}
return temp;
}
}
测试
```java
package com.zhhgyj.zhmall.core.util;
import java.util.Map;
/**
* @author Xupf xupengfei131276@126.com
*/
public class Test {
private static String publicKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDGkoPlSQZ2fW5+uZrP0RUbVBCQZ1sz5KmKyj6HCicb0xlcfwzRHhbVqJCO2owuO4Ln4/iGJYLX5UB/JvYUk2dClpBYL7OCJ7JZrCd4+rlEG0A1TWcKsjyXl0cyBRg+r9KuZjN0CXHZsxVmGrkyiPNJ7Pacdvv04SAaYfdCGHjSywIDAQAB";
private static String privateKey = "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";
public static void main(String[] args) {
try {
Map<String, Object> map = RSAUtils.genKeyPair();
String privateKey = RSAUtils.getPrivateKey(map);
String publicKey = RSAUtils.getPublicKey(map);
System.out.println("publicKey:" + publicKey);
System.out.println("privateKey:" + privateKey);
String aa = "Hello rsa!";
byte[] bytes = RSAUtils.encryptByPublicKey(aa.getBytes(), publicKey); // 公钥加密
byte[] bytes1 = RSAUtils.decryptByPrivateKey(bytes, privateKey); // 私钥解密
System.out.println(new String(bytes1));
String s = RSAUtils.decryptDataOnJava("c9fxOrlpfH4WJ0GgV3TZM5Z4+BEcO96gPmZHrksMAu6wt5zWp9kAYu9vTgDW+vq4lhyy+ujnAFovdGSGPeNbqiqMDOu8fgcjCtxA1P29AZWnIwc2CnEVUrC7EZjQkj2xd4Ikti5Ch8WHGcOvmW5z3VRhV3+7m8i46oOo268COVQ=", Test.privateKey);
System.out.println(s);
} catch (Exception e) {
e.printStackTrace();
}
}
}
vue端操作
1.下载jsencrypt
npm install jsencrypt
2.在main.js中安装
import JsEncrypt from 'jsencrypt' // res加密
Vue.prototype.$jsEncrypt = JsEncrypt
3.使用
var a = '123456'
var publicKey = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDGkoPlSQZ2fW5+uZrP0RUbVBCQZ1sz5KmKyj6HCicb0xlcfwzRHhbVqJCO2owuO4Ln4/iGJYLX5UB/JvYUk2dClpBYL7OCJ7JZrCd4+rlEG0A1TWcKsjyXl0cyBRg+r9KuZjN0CXHZsxVmGrkyiPNJ7Pacdvv04SAaYfdCGHjSywIDAQAB'
let jse = new this.$jsEncrypt()
jse.setPublicKey(publicKey)
let b = jse.encrypt(a)
console.log(b)