原创

微信小程序用户信息AES-128-CBC Java 解密

欢迎转载:攻城狮不是猫 求保留连接

import com.alibaba.fastjson.JSON;
import org.apache.commons.codec.binary.Base64;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
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.*;
import java.util.HashMap;
import java.util.Map;

/**AES 是一种可逆加密算法,对用户的敏感信息加密处理
* 对原始数据进行AES加密后,在进行Base64编码转化;
*/
public class AesCBC {
public static boolean initialized = false;

/**
* AES解密
* @param content 密文
* @return
* @throws InvalidAlgorithmParameterException
* @throws NoSuchProviderException
*/
public static 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;
}

/**
* 微信小程序用户信息解密
* @param encryptedData
* @param sessionKey
* @param iv
* @return
*/
public static String decrypt(String encryptedData, String sessionKey, String iv){
try {
byte[] resultByte = decrypt(Base64.decodeBase64(encryptedData), Base64.decodeBase64(sessionKey), Base64.decodeBase64(iv));
if(null != resultByte && resultByte.length > 0){
String info = new String(resultByte, "UTF-8");
return info;
}
} catch (Exception e) {
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;
}

public static void main(String[] args) {
String encryptedData, sessionKey, iv, appId;
encryptedData = "CiyLU1Aw2KjvrjMdj8YKliAjtP4gsMZM"+
"QmRzooG2xrDcvSnxIMXFufNstNGTyaGS"+
"9uT5geRa0W4oTOb1WT7fJlAC+oNPdbB+"+
"3hVbJSRgv+4lGOETKUQz6OYStslQ142d"+
"NCuabNPGBzlooOmB231qMM85d2/fV6Ch"+
"evvXvQP8Hkue1poOFtnEtpyxVLW1zAo6"+
"/1Xx1COxFvrc2d7UL/lmHInNlxuacJXw"+
"u0fjpXfz/YqYzBIBzD6WUfTIF9GRHpOn"+
"/Hz7saL8xz+W//FRAUid1OksQaQx4CMs"+
"8LOddcQhULW4ucetDf96JcR3g0gfRK4P"+
"C7E/r7Z6xNrXd2UIeorGj5Ef7b1pJAYB"+
"6Y5anaHqZ9J6nKEBvB4DnNLIVWSgARns"+
"/8wR2SiRS7MNACwTyrGvt9ts8p12PKFd"+
"lqYTopNHR1Vf7XjfhQlVsAJdNiKdYmYV"+
"oKlaRv85IfVunYzO0IKXsyl7JCUjCpoG"+
"20f0a04COwfneQAGGwd5oa+T8yO5hzuy"+
"Db/XcxxmK01EpqOyuxINew==";
sessionKey = "tiihtNczf5v6AKRyjwEUhQ==";
iv = "r7BXXKkLb8qrSNn05n0qiA==";
appId = "wx4f4bc4dec97d474b";
String info = decrypt(encryptedData, sessionKey, iv);
System.out.println(info);
Map<String, Object> map = new HashMap<>();
map.put("encryptedData", encryptedData);
map.put("sessionKey", sessionKey);
map.put("iv", iv);
map.put("appId", appId);
Map<String, Object> map1 = new HashMap<>();
map1.put("wxapplet", map);
String wxapplet = JSON.toJSON(map1).toString();
System.out.println(wxapplet);

}
}

参考:https://github.com/nosqlcoco/springboot-weapp-demo/blob/master/src/main/java/com/weapp/common/aes/AES.java

正文到此结束
Loading...