| | |
| | | /**
|
| | | * 对公众平台发送给公众账号的消息加解密示例代码.
|
| | | * |
| | | * @copyright Copyright (c) 1998-2014 Tencent Inc.
|
| | | */
|
| | |
|
| | | // ------------------------------------------------------------------------
|
| | |
|
| | | /**
|
| | | * 针对org.apache.commons.codec.binary.Base64,
|
| | | * 需要导入架包commons-codec-1.9(或commons-codec-1.8等其他版本)
|
| | | * 官方下载地址:http://commons.apache.org/proper/commons-codec/download_codec.cgi
|
| | | */
|
| | | package com.qq.weixin.mp.aes;
|
| | |
|
| | | import java.nio.charset.Charset;
|
| | | import java.util.Arrays;
|
| | | import java.util.Random;
|
| | |
|
| | | import javax.crypto.Cipher;
|
| | | import javax.crypto.spec.IvParameterSpec;
|
| | | import javax.crypto.spec.SecretKeySpec;
|
| | |
|
| | | import org.apache.commons.codec.binary.Base64;
|
| | |
|
| | | /**
|
| | | * 提供接收和推送给公众平台消息的加解密接口(UTF8编码的字符串).
|
| | | * <ol>
|
| | | * <li>第三方回复加密消息给公众平台</li>
|
| | | * <li>第三方收到公众平台发送的消息,验证消息的安全性,并对消息进行解密。</li>
|
| | | * </ol>
|
| | | * 说明:异常java.security.InvalidKeyException:illegal Key Size的解决方案
|
| | | * <ol>
|
| | | * <li>在官方网站下载JCE无限制权限策略文件(JDK7的下载地址:
|
| | | * http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html</li>
|
| | | * <li>下载后解压,可以看到local_policy.jar和US_export_policy.jar以及readme.txt</li>
|
| | | * <li>如果安装了JRE,将两个jar文件放到%JRE_HOME%\lib\security目录下覆盖原来的文件</li>
|
| | | * <li>如果安装了JDK,将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件</li>
|
| | | * </ol>
|
| | | */
|
| | | public class WXBizMsgCrypt {
|
| | | static Charset CHARSET = Charset.forName("utf-8");
|
| | | Base64 base64 = new Base64();
|
| | | byte[] aesKey;
|
| | | String token;
|
| | | String corpId;
|
| | |
|
| | | /**
|
| | | * 构造函数
|
| | | * @param token 公众平台上,开发者设置的token
|
| | | * @param encodingAesKey 公众平台上,开发者设置的EncodingAESKey
|
| | | * @param corpId 企业的corpid
|
| | | * |
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息
|
| | | */
|
| | | public WXBizMsgCrypt(String token, String encodingAesKey, String corpId) throws AesException {
|
| | | if (encodingAesKey.length() != 43) {
|
| | | throw new AesException(AesException.IllegalAesKey);
|
| | | }
|
| | |
|
| | | this.token = token;
|
| | | this.corpId = corpId;
|
| | | aesKey = Base64.decodeBase64(encodingAesKey + "=");
|
| | | }
|
| | |
|
| | | // 生成4个字节的网络字节序
|
| | | byte[] getNetworkBytesOrder(int sourceNumber) {
|
| | | byte[] orderBytes = new byte[4];
|
| | | orderBytes[3] = (byte) (sourceNumber & 0xFF);
|
| | | orderBytes[2] = (byte) (sourceNumber >> 8 & 0xFF);
|
| | | orderBytes[1] = (byte) (sourceNumber >> 16 & 0xFF);
|
| | | orderBytes[0] = (byte) (sourceNumber >> 24 & 0xFF);
|
| | | return orderBytes;
|
| | | }
|
| | |
|
| | | // 还原4个字节的网络字节序
|
| | | int recoverNetworkBytesOrder(byte[] orderBytes) {
|
| | | int sourceNumber = 0;
|
| | | for (int i = 0; i < 4; i++) {
|
| | | sourceNumber <<= 8;
|
| | | sourceNumber |= orderBytes[i] & 0xff;
|
| | | }
|
| | | return sourceNumber;
|
| | | }
|
| | |
|
| | | // 随机生成16位字符串
|
| | | String getRandomStr() {
|
| | | String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
|
| | | Random random = new Random();
|
| | | StringBuffer sb = new StringBuffer();
|
| | | for (int i = 0; i < 16; i++) {
|
| | | int number = random.nextInt(base.length());
|
| | | sb.append(base.charAt(number));
|
| | | }
|
| | | return sb.toString();
|
| | | }
|
| | |
|
| | | /**
|
| | | * 对明文进行加密.
|
| | | * |
| | | * @param text 需要加密的明文
|
| | | * @return 加密后base64编码的字符串
|
| | | * @throws AesException aes加密失败
|
| | | */
|
| | | String encrypt(String randomStr, String text) throws AesException {
|
| | | ByteGroup byteCollector = new ByteGroup();
|
| | | byte[] randomStrBytes = randomStr.getBytes(CHARSET);
|
| | | byte[] textBytes = text.getBytes(CHARSET);
|
| | | byte[] networkBytesOrder = getNetworkBytesOrder(textBytes.length);
|
| | | byte[] corpidBytes = corpId.getBytes(CHARSET);
|
| | |
|
| | | // randomStr + networkBytesOrder + text + corpid
|
| | | byteCollector.addBytes(randomStrBytes);
|
| | | byteCollector.addBytes(networkBytesOrder);
|
| | | byteCollector.addBytes(textBytes);
|
| | | byteCollector.addBytes(corpidBytes);
|
| | |
|
| | | // ... + pad: 使用自定义的填充方式对明文进行补位填充
|
| | | byte[] padBytes = PKCS7Encoder.encode(byteCollector.size());
|
| | | byteCollector.addBytes(padBytes);
|
| | |
|
| | | // 获得最终的字节流, 未加密
|
| | | byte[] unencrypted = byteCollector.toBytes();
|
| | |
|
| | | try {
|
| | | // 设置加密模式为AES的CBC模式
|
| | | Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
|
| | | SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
|
| | | IvParameterSpec iv = new IvParameterSpec(aesKey, 0, 16);
|
| | | cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);
|
| | |
|
| | | // 加密
|
| | | byte[] encrypted = cipher.doFinal(unencrypted);
|
| | |
|
| | | // 使用BASE64对加密后的字符串进行编码
|
| | | String base64Encrypted = base64.encodeToString(encrypted);
|
| | |
|
| | | return base64Encrypted;
|
| | | } catch (Exception e) {
|
| | | e.printStackTrace();
|
| | | throw new AesException(AesException.EncryptAESError);
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * 对密文进行解密.
|
| | | * |
| | | * @param text 需要解密的密文
|
| | | * @return 解密得到的明文
|
| | | * @throws AesException aes解密失败
|
| | | */
|
| | | String decrypt(String text) throws AesException {
|
| | | byte[] original;
|
| | | try {
|
| | | // 设置解密模式为AES的CBC模式
|
| | | Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
|
| | | SecretKeySpec key_spec = new SecretKeySpec(aesKey, "AES");
|
| | | IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16));
|
| | | cipher.init(Cipher.DECRYPT_MODE, key_spec, iv);
|
| | |
|
| | | // 使用BASE64对密文进行解码
|
| | | byte[] encrypted = Base64.decodeBase64(text);
|
| | |
|
| | | // 解密
|
| | | original = cipher.doFinal(encrypted);
|
| | | } catch (Exception e) {
|
| | | e.printStackTrace();
|
| | | throw new AesException(AesException.DecryptAESError);
|
| | | }
|
| | |
|
| | | String xmlContent, from_corpid;
|
| | | try {
|
| | | // 去除补位字符
|
| | | byte[] bytes = PKCS7Encoder.decode(original);
|
| | |
|
| | | // 分离16位随机字符串,网络字节序和corpId
|
| | | byte[] networkOrder = Arrays.copyOfRange(bytes, 16, 20);
|
| | |
|
| | | int xmlLength = recoverNetworkBytesOrder(networkOrder);
|
| | |
|
| | | xmlContent = new String(Arrays.copyOfRange(bytes, 20, 20 + xmlLength), CHARSET);
|
| | | from_corpid = new String(Arrays.copyOfRange(bytes, 20 + xmlLength, bytes.length),
|
| | | CHARSET);
|
| | | } catch (Exception e) {
|
| | | e.printStackTrace();
|
| | | throw new AesException(AesException.IllegalBuffer);
|
| | | }
|
| | |
|
| | | // corpid不相同的情况
|
| | | if (!from_corpid.equals(corpId)) {
|
| | | throw new AesException(AesException.ValidateCorpidError);
|
| | | }
|
| | | return xmlContent;
|
| | |
|
| | | }
|
| | |
|
| | | /**
|
| | | * 将公众平台回复用户的消息加密打包.
|
| | | * <ol>
|
| | | * <li>对要发送的消息进行AES-CBC加密</li>
|
| | | * <li>生成安全签名</li>
|
| | | * <li>将消息密文和安全签名打包成xml格式</li>
|
| | | * </ol>
|
| | | * |
| | | * @param replyMsg 公众平台待回复用户的消息,xml格式的字符串
|
| | | * @param timeStamp 时间戳,可以自己生成,也可以用URL参数的timestamp
|
| | | * @param nonce 随机串,可以自己生成,也可以用URL参数的nonce
|
| | | * |
| | | * @return 加密后的可以直接回复用户的密文,包括msg_signature, timestamp, nonce, encrypt的xml格式的字符串
|
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息
|
| | | */
|
| | | public String EncryptMsg(String replyMsg, String timeStamp, String nonce) throws AesException {
|
| | | // 加密
|
| | | String encrypt = encrypt(getRandomStr(), replyMsg);
|
| | |
|
| | | // 生成安全签名
|
| | | if (timeStamp == "") {
|
| | | timeStamp = Long.toString(System.currentTimeMillis());
|
| | | }
|
| | |
|
| | | String signature = SHA1.getSHA1(token, timeStamp, nonce, encrypt);
|
| | |
|
| | | // System.out.println("发送给平台的签名是: " + signature[1].toString());
|
| | | // 生成发送的xml
|
| | | String result = XMLParse.generate(encrypt, signature, timeStamp, nonce);
|
| | | return result;
|
| | | }
|
| | |
|
| | | /**
|
| | | * 检验消息的真实性,并且获取解密后的明文.
|
| | | * <ol>
|
| | | * <li>利用收到的密文生成安全签名,进行签名验证</li>
|
| | | * <li>若验证通过,则提取xml中的加密消息</li>
|
| | | * <li>对消息进行解密</li>
|
| | | * </ol>
|
| | | * |
| | | * @param msgSignature 签名串,对应URL参数的msg_signature
|
| | | * @param timeStamp 时间戳,对应URL参数的timestamp
|
| | | * @param nonce 随机串,对应URL参数的nonce
|
| | | * @param postData 密文,对应POST请求的数据
|
| | | * |
| | | * @return 解密后的原文
|
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息
|
| | | */
|
| | | public String DecryptMsg(String msgSignature, String timeStamp, String nonce, String postData)
|
| | | throws AesException {
|
| | |
|
| | | // 密钥,公众账号的app secret
|
| | | // 提取密文
|
| | | Object[] encrypt = XMLParse.extract(postData);
|
| | |
|
| | | // 验证安全签名
|
| | | String signature = SHA1.getSHA1(token, timeStamp, nonce, encrypt[1].toString());
|
| | |
|
| | | // 和URL中的签名比较是否相等
|
| | | // System.out.println("第三方收到URL中的签名:" + msg_sign);
|
| | | // System.out.println("第三方校验签名:" + signature);
|
| | | if (!signature.equals(msgSignature)) {
|
| | | throw new AesException(AesException.ValidateSignatureError);
|
| | | }
|
| | |
|
| | | // 解密
|
| | | String result = decrypt(encrypt[1].toString());
|
| | | return result;
|
| | | }
|
| | |
|
| | | /**
|
| | | * 验证URL
|
| | | * @param msgSignature 签名串,对应URL参数的msg_signature
|
| | | * @param timeStamp 时间戳,对应URL参数的timestamp
|
| | | * @param nonce 随机串,对应URL参数的nonce
|
| | | * @param echoStr 随机串,对应URL参数的echostr
|
| | | * |
| | | * @return 解密之后的echostr
|
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息
|
| | | */
|
| | | public String VerifyURL(String msgSignature, String timeStamp, String nonce, String echoStr)
|
| | | throws AesException {
|
| | | String signature = SHA1.getSHA1(token, timeStamp, nonce, echoStr);
|
| | |
|
| | | if (!signature.equals(msgSignature)) {
|
| | | throw new AesException(AesException.ValidateSignatureError);
|
| | | }
|
| | |
|
| | | String result = decrypt(echoStr);
|
| | | return result;
|
| | | }
|
| | |
|
| | | /** |
| | | * 对公众平台发送给公众账号的消息加解密示例代码. |
| | | * |
| | | * @copyright Copyright (c) 1998-2014 Tencent Inc. |
| | | */ |
| | | |
| | | // ------------------------------------------------------------------------ |
| | | |
| | | /** |
| | | * 针对org.apache.commons.codec.binary.Base64, |
| | | * 需要导入架包commons-codec-1.9(或commons-codec-1.8等其他版本) |
| | | * 官方下载地址:http://commons.apache.org/proper/commons-codec/download_codec.cgi |
| | | */ |
| | | package com.qq.weixin.mp.aes; |
| | | |
| | | import java.nio.charset.Charset; |
| | | import java.util.Arrays; |
| | | import java.util.Random; |
| | | |
| | | import javax.crypto.Cipher; |
| | | import javax.crypto.spec.IvParameterSpec; |
| | | import javax.crypto.spec.SecretKeySpec; |
| | | |
| | | import org.apache.commons.codec.binary.Base64; |
| | | |
| | | /** |
| | | * 提供接收和推送给公众平台消息的加解密接口(UTF8编码的字符串). |
| | | * <ol> |
| | | * <li>第三方回复加密消息给公众平台</li> |
| | | * <li>第三方收到公众平台发送的消息,验证消息的安全性,并对消息进行解密。</li> |
| | | * </ol> |
| | | * 说明:异常java.security.InvalidKeyException:illegal Key Size的解决方案 |
| | | * <ol> |
| | | * <li>在官方网站下载JCE无限制权限策略文件(JDK7的下载地址: |
| | | * http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html</li> |
| | | * <li>下载后解压,可以看到local_policy.jar和US_export_policy.jar以及readme.txt</li> |
| | | * <li>如果安装了JRE,将两个jar文件放到%JRE_HOME%\lib\security目录下覆盖原来的文件</li> |
| | | * <li>如果安装了JDK,将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件</li> |
| | | * </ol> |
| | | */ |
| | | public class WXBizMsgCrypt { |
| | | static Charset CHARSET = Charset.forName("utf-8"); |
| | | Base64 base64 = new Base64(); |
| | | byte[] aesKey; |
| | | String token; |
| | | String corpId; |
| | | |
| | | /** |
| | | * 构造函数 |
| | | * @param token 公众平台上,开发者设置的token |
| | | * @param encodingAesKey 公众平台上,开发者设置的EncodingAESKey |
| | | * @param corpId 企业的corpid |
| | | * |
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息 |
| | | */ |
| | | public WXBizMsgCrypt(String token, String encodingAesKey, String corpId) throws AesException { |
| | | if (encodingAesKey.length() != 43) { |
| | | throw new AesException(AesException.IllegalAesKey); |
| | | } |
| | | |
| | | this.token = token; |
| | | this.corpId = corpId; |
| | | aesKey = Base64.decodeBase64(encodingAesKey + "="); |
| | | } |
| | | |
| | | // 生成4个字节的网络字节序 |
| | | byte[] getNetworkBytesOrder(int sourceNumber) { |
| | | byte[] orderBytes = new byte[4]; |
| | | orderBytes[3] = (byte) (sourceNumber & 0xFF); |
| | | orderBytes[2] = (byte) (sourceNumber >> 8 & 0xFF); |
| | | orderBytes[1] = (byte) (sourceNumber >> 16 & 0xFF); |
| | | orderBytes[0] = (byte) (sourceNumber >> 24 & 0xFF); |
| | | return orderBytes; |
| | | } |
| | | |
| | | // 还原4个字节的网络字节序 |
| | | int recoverNetworkBytesOrder(byte[] orderBytes) { |
| | | int sourceNumber = 0; |
| | | for (int i = 0; i < 4; i++) { |
| | | sourceNumber <<= 8; |
| | | sourceNumber |= orderBytes[i] & 0xff; |
| | | } |
| | | return sourceNumber; |
| | | } |
| | | |
| | | // 随机生成16位字符串 |
| | | String getRandomStr() { |
| | | String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; |
| | | Random random = new Random(); |
| | | StringBuffer sb = new StringBuffer(); |
| | | for (int i = 0; i < 16; i++) { |
| | | int number = random.nextInt(base.length()); |
| | | sb.append(base.charAt(number)); |
| | | } |
| | | return sb.toString(); |
| | | } |
| | | |
| | | /** |
| | | * 对明文进行加密. |
| | | * |
| | | * @param text 需要加密的明文 |
| | | * @return 加密后base64编码的字符串 |
| | | * @throws AesException aes加密失败 |
| | | */ |
| | | String encrypt(String randomStr, String text) throws AesException { |
| | | ByteGroup byteCollector = new ByteGroup(); |
| | | byte[] randomStrBytes = randomStr.getBytes(CHARSET); |
| | | byte[] textBytes = text.getBytes(CHARSET); |
| | | byte[] networkBytesOrder = getNetworkBytesOrder(textBytes.length); |
| | | byte[] corpidBytes = corpId.getBytes(CHARSET); |
| | | |
| | | // randomStr + networkBytesOrder + text + corpid |
| | | byteCollector.addBytes(randomStrBytes); |
| | | byteCollector.addBytes(networkBytesOrder); |
| | | byteCollector.addBytes(textBytes); |
| | | byteCollector.addBytes(corpidBytes); |
| | | |
| | | // ... + pad: 使用自定义的填充方式对明文进行补位填充 |
| | | byte[] padBytes = PKCS7Encoder.encode(byteCollector.size()); |
| | | byteCollector.addBytes(padBytes); |
| | | |
| | | // 获得最终的字节流, 未加密 |
| | | byte[] unencrypted = byteCollector.toBytes(); |
| | | |
| | | try { |
| | | // 设置加密模式为AES的CBC模式 |
| | | Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding"); |
| | | SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES"); |
| | | IvParameterSpec iv = new IvParameterSpec(aesKey, 0, 16); |
| | | cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv); |
| | | |
| | | // 加密 |
| | | byte[] encrypted = cipher.doFinal(unencrypted); |
| | | |
| | | // 使用BASE64对加密后的字符串进行编码 |
| | | String base64Encrypted = base64.encodeToString(encrypted); |
| | | |
| | | return base64Encrypted; |
| | | } catch (Exception e) { |
| | | e.printStackTrace(); |
| | | throw new AesException(AesException.EncryptAESError); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 对密文进行解密. |
| | | * |
| | | * @param text 需要解密的密文 |
| | | * @return 解密得到的明文 |
| | | * @throws AesException aes解密失败 |
| | | */ |
| | | String decrypt(String text) throws AesException { |
| | | byte[] original; |
| | | try { |
| | | // 设置解密模式为AES的CBC模式 |
| | | Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding"); |
| | | SecretKeySpec key_spec = new SecretKeySpec(aesKey, "AES"); |
| | | IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16)); |
| | | cipher.init(Cipher.DECRYPT_MODE, key_spec, iv); |
| | | |
| | | // 使用BASE64对密文进行解码 |
| | | byte[] encrypted = Base64.decodeBase64(text); |
| | | |
| | | // 解密 |
| | | original = cipher.doFinal(encrypted); |
| | | } catch (Exception e) { |
| | | e.printStackTrace(); |
| | | throw new AesException(AesException.DecryptAESError); |
| | | } |
| | | |
| | | String xmlContent, from_corpid; |
| | | try { |
| | | // 去除补位字符 |
| | | byte[] bytes = PKCS7Encoder.decode(original); |
| | | |
| | | // 分离16位随机字符串,网络字节序和corpId |
| | | byte[] networkOrder = Arrays.copyOfRange(bytes, 16, 20); |
| | | |
| | | int xmlLength = recoverNetworkBytesOrder(networkOrder); |
| | | |
| | | xmlContent = new String(Arrays.copyOfRange(bytes, 20, 20 + xmlLength), CHARSET); |
| | | from_corpid = new String(Arrays.copyOfRange(bytes, 20 + xmlLength, bytes.length), |
| | | CHARSET); |
| | | } catch (Exception e) { |
| | | e.printStackTrace(); |
| | | throw new AesException(AesException.IllegalBuffer); |
| | | } |
| | | |
| | | // corpid不相同的情况 |
| | | if (!from_corpid.equals(corpId)) { |
| | | throw new AesException(AesException.ValidateCorpidError); |
| | | } |
| | | return xmlContent; |
| | | |
| | | } |
| | | |
| | | /** |
| | | * 将公众平台回复用户的消息加密打包. |
| | | * <ol> |
| | | * <li>对要发送的消息进行AES-CBC加密</li> |
| | | * <li>生成安全签名</li> |
| | | * <li>将消息密文和安全签名打包成xml格式</li> |
| | | * </ol> |
| | | * |
| | | * @param replyMsg 公众平台待回复用户的消息,xml格式的字符串 |
| | | * @param timeStamp 时间戳,可以自己生成,也可以用URL参数的timestamp |
| | | * @param nonce 随机串,可以自己生成,也可以用URL参数的nonce |
| | | * |
| | | * @return 加密后的可以直接回复用户的密文,包括msg_signature, timestamp, nonce, encrypt的xml格式的字符串 |
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息 |
| | | */ |
| | | public String EncryptMsg(String replyMsg, String timeStamp, String nonce) throws AesException { |
| | | // 加密 |
| | | String encrypt = encrypt(getRandomStr(), replyMsg); |
| | | |
| | | // 生成安全签名 |
| | | if (timeStamp == "") { |
| | | timeStamp = Long.toString(System.currentTimeMillis()); |
| | | } |
| | | |
| | | String signature = SHA1.getSHA1(token, timeStamp, nonce, encrypt); |
| | | |
| | | // System.out.println("发送给平台的签名是: " + signature[1].toString()); |
| | | // 生成发送的xml |
| | | String result = XMLParse.generate(encrypt, signature, timeStamp, nonce); |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * 检验消息的真实性,并且获取解密后的明文. |
| | | * <ol> |
| | | * <li>利用收到的密文生成安全签名,进行签名验证</li> |
| | | * <li>若验证通过,则提取xml中的加密消息</li> |
| | | * <li>对消息进行解密</li> |
| | | * </ol> |
| | | * |
| | | * @param msgSignature 签名串,对应URL参数的msg_signature |
| | | * @param timeStamp 时间戳,对应URL参数的timestamp |
| | | * @param nonce 随机串,对应URL参数的nonce |
| | | * @param postData 密文,对应POST请求的数据 |
| | | * |
| | | * @return 解密后的原文 |
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息 |
| | | */ |
| | | public String DecryptMsg(String msgSignature, String timeStamp, String nonce, String postData) |
| | | throws AesException { |
| | | |
| | | // 密钥,公众账号的app secret |
| | | // 提取密文 |
| | | Object[] encrypt = XMLParse.extract(postData); |
| | | |
| | | // 验证安全签名 |
| | | String signature = SHA1.getSHA1(token, timeStamp, nonce, encrypt[1].toString()); |
| | | |
| | | // 和URL中的签名比较是否相等 |
| | | // System.out.println("第三方收到URL中的签名:" + msg_sign); |
| | | // System.out.println("第三方校验签名:" + signature); |
| | | if (!signature.equals(msgSignature)) { |
| | | throw new AesException(AesException.ValidateSignatureError); |
| | | } |
| | | |
| | | // 解密 |
| | | String result = decrypt(encrypt[1].toString()); |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * 验证URL |
| | | * @param msgSignature 签名串,对应URL参数的msg_signature |
| | | * @param timeStamp 时间戳,对应URL参数的timestamp |
| | | * @param nonce 随机串,对应URL参数的nonce |
| | | * @param echoStr 随机串,对应URL参数的echostr |
| | | * |
| | | * @return 解密之后的echostr |
| | | * @throws AesException 执行失败,请查看该异常的错误码和具体的错误信息 |
| | | */ |
| | | public String VerifyURL(String msgSignature, String timeStamp, String nonce, String echoStr) |
| | | throws AesException { |
| | | String signature = SHA1.getSHA1(token, timeStamp, nonce, echoStr); |
| | | |
| | | if (!signature.equals(msgSignature)) { |
| | | throw new AesException(AesException.ValidateSignatureError); |
| | | } |
| | | |
| | | String result = decrypt(echoStr); |
| | | return result; |
| | | } |
| | | |
| | | } |