| 提交 | 用户 | age | ||
| 5c5945 | 1 | package com.hx.mp.util; |
| E | 2 | |
| 3 | import com.sun.org.apache.xerces.internal.impl.dv.util.Base64; | |
| 4 | import net.sf.json.JSONObject; | |
| 5 | import org.bouncycastle.jce.provider.BouncyCastleProvider; | |
| 6 | import org.slf4j.Logger; | |
| 7 | import org.slf4j.LoggerFactory; | |
| 8 | ||
| 9 | import java.io.UnsupportedEncodingException; | |
| 10 | import java.security.AlgorithmParameters; | |
| 11 | import java.security.InvalidAlgorithmParameterException; | |
| 12 | import java.security.InvalidKeyException; | |
| 13 | import java.security.Key; | |
| 14 | import java.security.NoSuchAlgorithmException; | |
| 15 | import java.security.NoSuchProviderException; | |
| 16 | import java.security.Security; | |
| 17 | ||
| 18 | import javax.crypto.BadPaddingException; | |
| 19 | import javax.crypto.Cipher; | |
| 20 | import javax.crypto.IllegalBlockSizeException; | |
| 21 | import javax.crypto.NoSuchPaddingException; | |
| 22 | import javax.crypto.spec.IvParameterSpec; | |
| 23 | import javax.crypto.spec.SecretKeySpec; | |
| 24 | ||
| 25 | ||
| 26 | public class WechatUtil { | |
| 27 | public static boolean initialized = false; | |
| 28 | ||
| 29 | //log4j日志 | |
| 30 | private static Logger logger = LoggerFactory.getLogger(WechatUtil.class.getName()); | |
| 31 | ||
| 32 | public static JSONObject encryptedData(String encryptedData, String session_key, String iv) throws Exception { | |
| 33 | JSONObject encrypted_obj = null; | |
| 34 | byte[] resultByte =decrypt(Base64.decode(encryptedData), | |
| 35 | Base64.decode(session_key), | |
| 36 | Base64.decode(iv)); | |
| 37 | if(null != resultByte && resultByte.length > 0){ | |
| 38 | String userInfo = new String(resultByte, "UTF-8"); | |
| 39 | encrypted_obj = JSONObject.fromObject(userInfo); | |
| 40 | }else{ | |
| 41 | logger.error("获取unionid解密失败：encryptedData="+encryptedData+";session_key="+session_key+";iv="+iv); | |
| 42 | } | |
| 43 | return encrypted_obj; | |
| 44 | } | |
| 45 | ||
| 46 | ||
| 47 | /** | |
| 48 | * AES解密 | |
| 49 | * @param content 密文 | |
| 50 | * @return | |
| 51 | * @throws InvalidAlgorithmParameterException | |
| 52 | * @throws NoSuchProviderException | |
| 53 | */ | |
| 54 | public static byte[] decrypt(byte[] content, byte[] keyByte, byte[] ivByte) throws Exception { | |
| 55 | initialize(); | |
| 56 | Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding"); | |
| 57 | Key sKeySpec = new SecretKeySpec(keyByte, "AES"); | |
| 58 | ||
| 59 | cipher.init(Cipher.DECRYPT_MODE, sKeySpec, generateIV(ivByte));// 初始化 | |
| 60 | byte[] result = cipher.doFinal(content); | |
| 61 | return result; | |
| 62 | } | |
| 63 | ||
| 64 | public static void initialize(){ | |
| 65 | if (initialized) return; | |
| 66 | Security.addProvider(new BouncyCastleProvider()); | |
| 67 | initialized = true; | |
| 68 | } | |
| 69 | //生成iv | |
| 70 | public static AlgorithmParameters generateIV(byte[] iv) throws Exception{ | |
| 71 | AlgorithmParameters params = AlgorithmParameters.getInstance("AES"); | |
| 72 | params.init(new IvParameterSpec(iv)); | |
| 73 | return params; | |
| 74 | } | |
| 75 | ||
| 76 | ||
| 77 | } | |
