微信小程序 用户数据解密
官方指引图：
引导图一步一步操作
1、获取code
2、发送code到第三方服务器，获取3rd_session
3、在第三方服务器上发送appid、appsecret、code到微信服务器换取session_key和openid
这里使用JFinal搭建的服务器
Redis配置
获取第三方session
private void closeHttpClient(CloseableHttpClient client) throws IOException {
if (client != null) {
client.close();
}
}
ExecLinuxCMDUtil.Java
/**
- java在linux环境下执行linux命令，然后返回命令返回值。
- Created by LJaer on 16/12/22.
*/
public class ExecLinuxCMDUtil {
public static final ExecLinuxCMDUtil instance = new ExecLinuxCMDUtil();
public static Object exec(String cmd) {
try {
String[] cmdA = { "/bin/sh","-c",cmd };
Process process = Runtime.getRuntime().exec(cmdA);
LineNumberReader br = new LineNumberReader(new InputStreamReader(
process.getInputStream()));
StringBuffer sb = new StringBuffer();
String line;
while ((line = br.readLine()) != null) {
System.out.println(line);
sb.append(line).append("n");
}
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
4、解密用户数据
console输出结果：
后端解密代码
try {
byte[] resultByte = AESUtil.instance.decrypt(Base64.decodeBase64(encryptedData),Base64.decodeBase64(session_key),Base64.decodeBase64(iv));
if(null != resultByte && resultByte.length > 0){
String userInfo = new String(resultByte,"UTF-8");
System.out.println(userInfo);
JSONObject json = JSONObject.fromObject(userInfo); //将字符串{“id”：1}
renderJson(json);
}
} catch (InvalidAlgorithmParameterException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
AESUtil.java
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.*;
public class AESUtil {
public static final AESUtil instance = new AESUtil();
public static boolean initialized = false;
/**
-
AES解密
-
@param content 密文
-
@return
-
@throws InvalidAlgorithmParameterException
-
@throws NoSuchProviderException
*/
public byte[] decrypt(byte[] content,byte[] keyByte,byte[] ivByte) throws InvalidAlgorithmParameterException {
initialize();
try {
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
Key sKeySpec = new SecretKeySpec(keyByte,"AES");
cipher.init(Cipher.DECRYPT_MODE,sKeySpec,generateIV(ivByte));// 初始化
byte[] result = cipher.doFinal(content);
return result;
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (NoSuchProviderException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
public static void initialize(){
if (initialized) return;
Security.addProvider(new BouncyCastleProvider());
initialized = true;
}
//生成iv
public static AlgorithmParameters generateIV(byte[] iv) throws Exception{
AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
params.init(new IvParameterSpec(iv));
return params;
}
}
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